WO2022016610A1 - 用于外科器械的钉仓组件及外科器械 - Google Patents

用于外科器械的钉仓组件及外科器械 Download PDF

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Publication number
WO2022016610A1
WO2022016610A1 PCT/CN2020/106903 CN2020106903W WO2022016610A1 WO 2022016610 A1 WO2022016610 A1 WO 2022016610A1 CN 2020106903 W CN2020106903 W CN 2020106903W WO 2022016610 A1 WO2022016610 A1 WO 2022016610A1
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WO
WIPO (PCT)
Prior art keywords
staple cartridge
pusher
surgical instrument
cartridge assembly
blade
Prior art date
Application number
PCT/CN2020/106903
Other languages
English (en)
French (fr)
Inventor
孙宝峰
Original Assignee
江苏风和医疗器材股份有限公司
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Filing date
Publication date
Application filed by 江苏风和医疗器材股份有限公司 filed Critical 江苏风和医疗器材股份有限公司
Publication of WO2022016610A1 publication Critical patent/WO2022016610A1/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

Definitions

  • the present invention relates to the field of surgical instruments.
  • Surgical instruments are surgical tools in medical operations, and suturing instruments are a type of surgical instruments, which are medically used and replace manual suturing.
  • the main working principle is to use staples to anastomose tissue, similar to a stapler.
  • the stapling instrument includes a pair of cooperating elongated jaw members that can be adapted to be inserted into a patient for stapling and/or cutting tissue, and that can support a receiving staple cartridge.
  • the existing staple cartridge generally includes a staple cartridge body and staples disposed in the staple cartridge body, and the staple cartridge body is provided with a plurality of staple cavities for accommodating the staples.
  • the staple cartridge body is provided with a knife groove extending along the longitudinal axis of the staple cartridge body, and the staple cavities are arranged on both sides of the knife groove along the longitudinal axis.
  • the sipe accommodates a cutting knife and moves along the sipe.
  • the cutting knife includes a base and a blade extending from the base, the base is located in the blade groove and moves along the blade groove, and the blade is located above the staple cartridge body and used for cutting tissue.
  • a knife pusher is arranged in the suturing device. When the staple cartridge with the cutting knife is installed in the suture device, the pusher and the cutting knife are matched together, and the pusher pushes the cutting knife to make it travel in the knife groove to cut organization.
  • the knife pushing member and the cutting knife cannot be fixedly matched, and the knife pushing member can only push the cutting knife forward and cannot drive the cutting knife back.
  • the pushing element cannot bring the cutting knife back to the original position. Since the front side of the staple cartridge is located at the front end of the opening of the jaw member (ie, the end effector), the blade portion of the non-retractable cutting knife is exposed on the front side of the staple cartridge, and when the doctor removes the jaw member from the patient's body During the process, the blade part is easy to damage the tissue, and the doctor is also easily injured by the blade part when changing the nail cartridge.
  • the purpose of the present invention is to provide a staple cartridge assembly for a surgical instrument, the staple cartridge assembly includes a cutting blade, and the cutting blade returns to an initial position after cutting tissue.
  • a staple cartridge assembly for surgical instruments comprising a cutting knife, a pusher and a staple cartridge body extending in a longitudinal direction; the staple cartridge body is provided with a knife groove extending in the longitudinal direction, and the cutting A portion of the knife and a portion of the pusher are both located within the pocket, the portion of the cutting knife is located behind the portion of the pusher, and the portion of the cutting knife abuts the The part of the pusher; the cutting blade includes a connecting portion for detachably connecting with the pushing member of the surgical instrument.
  • the staple cartridge body includes an insertion end and an end; in an initial state, the pusher is located at the end of the staple cartridge body, and a part of the pusher extends beyond the staple cartridge body. end face.
  • the staple cartridge body includes an insertion end and a distal end; the pusher includes an extension portion extending backward, and in an initial state, at least a part of the extension portion exceeds the end face of the distal end of the staple cartridge body .
  • the pusher includes a limit block and pushers located on both sides of the limit block, the limit block is located in the knife groove, and the part of the pusher includes the limit In the block, the pushing member includes a pushing portion disposed in the staple cartridge body and the extension portion extending backward from the pushing portion.
  • the bottom surface of the extension portion is higher than the bottom surface of the staple cartridge body.
  • each push portion includes two push blocks arranged in parallel, and the extension portion extends backward from the push blocks.
  • each of the push portions includes a first push block and a second push block arranged in parallel, and the first push block is closer to the limit block than the second push block, The extension portion extends backward from the first pushing block.
  • the connecting portion is located outside the staple cartridge body.
  • the cutting knife includes a base, a blade portion extending upward from the base, and an additional portion extending backward from the base, the base is located in the knife groove, and the part of the cutting knife includes the base portion; the additional portion includes the connecting portion.
  • the connecting portion is a first accommodating structure, and the first accommodating structure is used to removably accommodate a part of the blade pushing member.
  • the first accommodating structure is a concave portion formed by a downward depression.
  • the staple cartridge body includes an insertion end and an end; the knife slot divides the staple cartridge body into a first side portion and a second side portion, and the end of the staple cartridge body is provided with a The top surface of the staple cartridge body protrudes upwards with a first protruding part and a second protruding part, the first protruding part is located on the first side part, and the second protruding part is located on the second side Department.
  • the knife pushing member includes a second accommodating structure, and the second accommodating structure is used to removably accommodate a part of the cutting knife.
  • the knife pusher includes a body portion extending along the longitudinal direction, and a first extension portion and a second extension portion extending downward from the body portion; the body portion is provided with a bottom surface recessed upwardly. a notch; another notch is formed upwardly recessed between the first extension part and the second extension part, and the other notch is the second accommodating structure.
  • the staple cartridge assembly further includes staples and a staple pusher
  • the staple cartridge body is provided with a staple cavity
  • the staples are accommodated in the staple chamber
  • the staple pusher is used to push the staples.
  • the staple is pushed out from the staple cavity; the pusher is used to push the staple pusher.
  • the cutting blade is integrally formed.
  • the cutting blade is made of metal.
  • the cutting knife includes a base portion, a blade portion connected to the base portion, and an additional portion extending backward from the blade portion.
  • the blade portion is in an interference fit with the base portion.
  • the base portion and the blade portion are made of different materials.
  • the base portion is made of plastic
  • the blade portion is made of metal
  • the additional portion and the blade portion are integrally formed, and both the additional portion and the blade portion are made of metal.
  • the present invention can also be realized through the following technical solutions:
  • a surgical instrument comprising a shaft assembly and an end effector disposed at one end of the shaft assembly; the shaft assembly including a knife pusher, a part of the pusher at the end within the effector; the surgical instrument further includes a staple cartridge assembly for a surgical instrument according to any of the above, the staple cartridge assembly being removably mountable to the end effector.
  • the end effector is installed with a limiter, and the limiter is used to abut the knife pusher to prevent the knife pusher from moving forward; the staple cartridge assembly exerts force on the limiter.
  • the position piece is separated from the push-knife piece.
  • the end effector includes a staple cartridge seat and a staple anvil seat pivotally connected to the staple cartridge seat, and the staple cartridge assembly is detachably mounted on the staple cartridge seat; the limit A piece is pivotally mounted to the cartridge seat.
  • the limiting member includes a main body portion, a first protruding post extending from the main body portion to one side in the lateral direction and a second protruding post extending from the other side in the lateral direction.
  • Each of the side walls is provided with a receiving hole, the receiving hole includes a first receiving hole and a second receiving hole, and the first protruding post is pivotally installed in the first receiving hole , the second protruding post can be pivotally installed in the second receiving hole.
  • the limiting member further includes a torsion spring.
  • the limiting member further includes a protruding block extending from the main body portion, the protruding block and the first protruding post extend in the same direction; the torsion spring is wound around the first protruding post and is One end is in contact with the protruding block, and the other end is in contact with the staple cartridge seat.
  • the end effector includes a staple cartridge seat and an anvil seat pivotally connected to the staple cartridge seat;
  • the surgical instrument further includes a spring piece installed in the staple cartridge seat, the spring plate One end of the elastic piece is fixed to the bottom wall of the staple cartridge seat, and the other end of the elastic piece is abutted against the knife pusher.
  • the surgical instrument further includes a handle assembly, and the shaft assembly extends from the handle assembly; the handle assembly includes a transmission mechanism, the transmission mechanism is connected to the shaft assembly, and the transmission mechanism drives the The shaft assembly moves forward or backward.
  • the surgical instrument further comprises a core rod connected with the rear end of the knife pusher, and the core rod is connected with the transmission mechanism.
  • the transmission mechanism includes a linear motion output member, and the core rod is connected with the output member.
  • the cutting knife can be returned to the initial position under the driving of the knife pusher, that is, the cutting edge is no longer located on the front side of the staple cartridge, preventing the cutting edge from damaging the patient's tissue and Doctor.
  • Fig. 1 is the three-dimensional structure schematic diagram of the stapler of the present invention
  • FIG. 2 is a schematic structural diagram of the end effector and the knife pusher of the stapler of the present invention
  • FIG. 3 is an exploded perspective view of the end effector and the knife pusher shown in FIG. 2;
  • FIG. 4 is a schematic structural diagram of the staple cartridge assembly and the knife pusher shown in FIG. 3;
  • Fig. 5 is an enlarged view of the circled portion shown in Fig. 4;
  • FIG. 6 is a schematic structural diagram of another angle of the staple cartridge assembly and the knife pusher shown in FIG. 4;
  • Fig. 7 is an enlarged view of the circled portion shown in Fig. 6;
  • Figure 8 is an exploded perspective view of the staple cartridge assembly and the knife pusher shown in Figure 4;
  • Fig. 9 is an enlarged view of the circled portion shown in Fig. 8.
  • Figure 10 is a further exploded perspective view of the staple cartridge assembly and the knife pusher shown in Figure 8;
  • Figure 11 is an enlarged view of the circled portion shown in Figure 10;
  • Figure 12 is a schematic structural diagram of the limiting member shown in Figure 8.
  • Figure 13 is a schematic structural diagram of the pusher shown in Figure 10;
  • FIG. 14 is a schematic structural diagram of the stopper shown in FIG. 4 when it is separated from the second notch of the pusher;
  • Figure 15 is an enlarged view of the circled portion shown in Figure 14;
  • FIG. 16 is a schematic structural diagram of the cutting knife, the limiter and the pusher shown in FIG. 14;
  • FIG. 17 is a perspective view of a cutting knife provided by another embodiment of the present invention.
  • Figure 18 is an exploded perspective view of the cutting blade shown in Figure 17;
  • FIG. 19 is a perspective view of a cutting knife provided by a third embodiment of the present invention.
  • FIG. 20 is an exploded perspective view of the cutting blade shown in FIG. 19 .
  • the present invention discloses a stapler 1000, which includes a handle assembly 900, a shaft assembly 800 extending from the handle assembly 900, and an end effector 100 disposed at one end of the shaft assembly 800.
  • the handle assembly includes a body and a transmission mechanism mounted on the body, the transmission mechanism is connected to the shaft assembly 800, and the transmission mechanism drives the shaft assembly 800 to move forward or backward. As shown in FIGS.
  • the end effector 100 includes a staple cartridge seat 10 and a staple anvil seat 20 pivotally connected to the staple cartridge seat 10 , and the staple cartridge assembly 30 can be snapped into the staple cartridge seat 10 , It can also be taken out from the staple cartridge holder 10 , that is, the staple cartridge assembly 30 is detachably mounted on the staple cartridge holder 10 .
  • the staple cartridge assembly 30 includes a staple cartridge 40 and a cutting blade 50 disposed in the staple cartridge 40 .
  • the shaft assembly includes a knife pusher 60 , a part of which is located in the end effector 100 , and the pusher 60 is used to drive the cutting knife 50 to move forward or backward.
  • the stapler also includes a core rod connected with the rear end of the knife pusher 60, and the core rod is connected with the transmission mechanism.
  • the transmission mechanism drives the mandrel, the mandrel drives the pusher 60, and the pusher 60 drives the cutter 50 to move forward or backward.
  • the transmission mechanism includes an output piece that moves linearly, and the core rod is connected to the output piece.
  • the transmission mechanism includes a rack and pinion matching mechanism, the output member is a rack, the core rod is connected to the rack, and the pusher 60 is connected to the core rod, so that the gears sequentially drive the rack, the core rod, and the pusher 60 to move linearly. , thereby driving the cutting blade 50 to move forward or backward.
  • An elastic piece 70 is also installed in the nail magazine seat 10 , one end of the elastic piece 70 is welded to the bottom wall 11 of the nail magazine seat 10 , and the other end of the elastic piece 70 abuts against the knife pusher 60 .
  • the supporting force makes a part of the pusher 60 abut against the anvil seat 20 upward.
  • anterior and “posterior” as used herein are relative to the clinician manipulating the stapler 100, the term “posterior” refers to a direction closer to the clinician, and the term “anterior” refers to a direction away from the clinician; as used herein
  • the term “longitudinal direction” refers to the direction of extension between front and rear, and the term “lateral” refers to the direction perpendicular to the longitudinal direction; as used herein, the terms “upper” and “lower” are relative terms, that is, “anvil”
  • the seat 20" is “upper”
  • the "pin cartridge seat 10" is “lower”.
  • the staple cartridge 40 includes staples (not shown), a staple pusher (not shown), a staple cartridge body 41 extending in the longitudinal direction, and a pusher installed on the staple cartridge body 41 42. Bracket 43.
  • the cutting knife 50 is also installed on the staple cartridge body 41 , the cutting knife 50 is arranged adjacent to the pusher 42 , and the bracket 43 is used to limit the pusher 42 and the cutting knife 50 to prevent the pusher 42 and the cutting knife 50 from being separated from the staple cartridge body 41 downward.
  • Adjacent means that the cutting blade 50 and the pusher 42 are adjacent to each other, but are not fixed to each other.
  • the staple cartridge body 41 has a plurality of staple cavities 411, the staples are arranged in the staple cavities 411, and a part of the staple pusher is also arranged in the staple cavities 411 and abuts against the bottom of the staples, when the pusher 42 moves forward During movement, the pusher 42 drives the pusher to move upward, and the pusher pushes the staples out of the staples.
  • the staple cartridge body 41 is provided with a knife groove 412 along the longitudinal direction, and the knife groove 412 is for the cutting knife 50 to travel inside.
  • the staple cartridge body 41 includes an insertion end 413 and an end 414 .
  • the pusher 42 is located at the end 414 of the staple cartridge body 41 , and when the cutting blade 50 moves forward in the blade groove 412 , the cutting blade 50 pushes against it.
  • the pusher 42 moves forward, and the pusher 42 moves upward against the staple pushing member, and the staple pushing member pushes out the staples from the staple cavity 411 .
  • the cutting knife 50 includes a base portion 51 , a blade portion 52 extending upward from the base portion 51 , and an additional portion 53 extending backward from the base portion 51 .
  • the additional portion 53 includes a connecting portion 530, and the connecting portion 530 is used for detachable connection with the knife pushing member 60. In the initial state, the additional portion 53 extends beyond the rear end surface of the staple cartridge body 41, and the connecting portion 530 is located outside the staple cartridge body 41; The rear end surface of the staple cartridge body 41 is the end surface of the distal end 414 of the staple cartridge body 41 .
  • the connecting portion 530 is a first accommodating structure, and the first accommodating structure is used for accommodating a part of the blade pusher 60 , and the first accommodating structure is a concave portion formed by concave downward from the top surface of the additional portion 53 , that is, the connecting portion 530 is a recess.
  • the concave portion 530 is located outside the staple cartridge body 41 , and the concave portion 530 is used for accommodating a part of the pusher 60 .
  • the blade pushing member 60 When the blade pushing member 60 is connected with the cutting blade 50 , the blade pushing member 60 drives the cutting blade 50 to move forward or backward in the blade groove 412 .
  • the knife slot 412 divides the staple cartridge body 41 into a first side portion 4151 and a second side portion 4152.
  • the distal end 414 of the staple cartridge body 41 is provided with a first protruding portion 4161 and a second protruding portion protruding upward from the top surface of the staple cartridge body 41.
  • part 4162 the first protruding part 4161 is located on the first side part 4151
  • the second protruding part 4162 is located on the second side part 4152
  • the blade part 52 is located on the first protruding part 4161 and the second protruding part
  • the first protruding part 4161 and the second protruding part 4162 are used to protect the blade part 52 in the initial state to prevent the blade part 52 from being damaged by foreign objects, and the doctor will not be damaged when the staple cartridge 40 is loaded. Blade part 52 damage.
  • the pusher 42 includes a limit block 421 and two pushers 422 located on both sides of the limit block 421 .
  • the limit block 421 is located in the knife slot 412
  • the pusher 422 includes a pusher portion disposed in the cartridge body 41 . 423 and the extension portion 424 extending backward from the pushing portion 423 . In the initial state, the extension portion 424 extends beyond the rear end surface of the staple cartridge body 41 .
  • the pushing portion 423 includes a first pushing block 425 and a second pushing block 426 arranged in parallel. The first pushing block 425 is closer to the limiting block 421 than the second pushing block 426 , and the extending portion 424 extends from the first pushing block 424 .
  • the push block 425 extends backward, the bottom surface of the extending portion 424 is higher than the bottom surface of the staple cartridge body 41 , and the bottom surface of the extending portion 424 can abut with the limiting member 80 (which will be described later).
  • the initial state includes a state in which the cartridge assembly 30 is not installed in the end effector 100, and also includes a state in which the staple cartridge assembly is installed in the end effector 100 but the cutter 50 and pusher 42 are not moved forward.
  • the base 51 of the cutting knife 50 and the limit block 421 of the pusher 42 are both located in the knife groove 412, the base 51 is located behind the limit block 421 and the base 51 is adjacent to the limit block 421, and the cutting knife 50 and the pusher 42 are located along the knife groove 412 moves.
  • the word "exceeds" is used in several places in this document, and “exceeds” means that a part is exposed relative to a datum plane.
  • a limiting member 80 is also installed in the staple cartridge base 10 .
  • the limiting member 80 is pivotally mounted on the staple cartridge base 10 . In an initial state, the limiting member 80 abuts against the knife pushing member 60 .
  • the limiting member 80 includes a main body portion 81 , a first protruding post 82 extending from the main body portion 81 to one side in the lateral direction, and a second protruding post 83 extending to the other side in the lateral direction.
  • the limiting member 80 further includes a protruding block 84 extending from the body portion 81 , and the protruding block 84 and the first protruding post 82 extend in the same direction.
  • the limiting member 80 further includes a torsion spring 85 .
  • the torsion spring 85 is wound around the first protruding post 82 , one end of the torsion spring 85 abuts against the protruding block 84 , and the other end abuts against the cartridge seat 10 of the end effector 100 .
  • the main body portion 81 includes two side arms arranged in parallel and a connecting arm 86 connecting the two side arms.
  • the two side arms are a first side arm 87 and a second side arm 88 respectively.
  • 87 extends
  • the second protruding post 83 extends from the second side arm 88
  • an abdication groove 89 is formed between the first side arm 87 and the second side arm 88 that penetrates in the up-down direction.
  • the blade pusher 60 includes a main body portion 61 extending in the longitudinal direction, and a first extending portion 62 and a second extending portion 63 extending downward from the main body portion 61 .
  • Two accommodating structures the second accommodating structure is used for accommodating a part of the cutting knife 50
  • the second accommodating structure is a first recess 611 formed upwardly from the bottom surface of the main body 61 of the pushing knife 60
  • the first recess The opening 611 is used for accommodating a part of the additional portion 53 of the cutting blade 50 , so that the connection between the blade pushing member 60 and the cutting blade 50 is more stable and reliable.
  • the knife pushing member 60 further includes a second recess 612 recessed upward from the bottom surface of the body portion 61 .
  • the connecting arm 86 of the limiting member 80 abuts against the second recess 612 to prevent the knife pushing member 60 from being under the action of external force. Move forward.
  • the second extension portion 63 is located between the first recess 611 and the second recess 612 , and the second extension portion 63 penetrates through the escape groove 89 .
  • the staple cartridge assembly 30 when the staple cartridge assembly 30 is in use, first remove the cover on the staple cartridge 40, and then press down the staple cartridge assembly 30 and install it into the staple cartridge seat 10, the staple cartridge assembly 30 Force is applied to the limiting member 80 to separate it from the pushing member 60 .
  • the extension portion 424 of the pusher 42 abuts with the side arm of the main body portion 81 of the limiting member 80, thereby pressing the main body portion 81 of the limiting member 80 downward, so that the The main body portion 81 of the limiting member 80 is separated from the main body portion 61 of the blade pushing member 60 .
  • the blade pushing member 60 can move forward under the action of an external force.
  • the first extension 62 of the pusher 60 moves downward under the action of the anvil 20 and enters the recess 530 of the additional portion 53 of the cutting knife 50 .
  • the pusher 60 drives the cutter 50 to move forward.
  • the cutting knife 50 is moved from the distal end 414 of the staple cartridge body 41 to the insertion end 413 of the staple cartridge body 41 , the cutting of the tissue is completed.
  • the pusher 42 does not return after being pushed to the insertion end 413 . At this time, the pusher 60 needs to be retracted from the insertion end 413 of the staple cartridge body 41 to the end 414 of the staple cartridge body 41 .
  • the pusher 60 also brings the cutting blade 50 back to the distal end 414 of the staple cartridge body 41 .
  • the anvil seat 20 pivots to open the end effector 100 , and the first extension 62 of the pushing blade 60 moves upward under the action of the elastic piece 70 .
  • the concave portion 530 of the additional portion 53 of the cutting blade 50 is moved and disengaged.
  • the limiting member 80 is pivoted so that the connecting arm 86 abuts against the second recess 612 of the body portion 61 of the blade pushing member 60 . At this time, the blade pushing member 60 cannot move forward under the action of external force.
  • the blade portion 52 When the cutting blade 50 is returned to the distal end 414 of the staple cartridge body 41, the blade portion 52 is no longer located on the front side of the staple cartridge 40, at the front end of the opening when the end effector 100 is opened, reducing the risk of the blade portion 52 damaging the patient's tissue and the doctor .
  • the cutting edge portion 52 is located between the first protruding portion 4161 and the second protruding portion 4162. During the process of taking out the patient's body, the blade portion 52 will not damage the tissue, and the doctor will not be injured by the blade portion 52 when taking out the staple cartridge 40 .
  • the pusher 42 has an extension portion 424.
  • the extension portion 424 extends beyond the rear end surface of the staple cartridge body 41.
  • the extension portion 424 limits the position
  • the pusher 80 is separated from the pusher 60, so that the pusher 60 can move forward under the action of the external force.
  • the blade portion 52 is located on the front side of the cartridge 40 and at the front end of the opening when the end effector 100 is opened.
  • the blade portion 52 is located between the first protruding portion 4161 and the second protruding portion 4162, and the first protruding portion 4161 and the second protruding portion 4162 are used to block the blade portion 52 after cutting the tissue and retracting the knife In order to prevent the blade portion 52 from damaging the patient's tissue, the doctor will not be injured by the blade portion 52 when taking out the staple cartridge 40 .
  • the cutting blade 50 is integrally formed.
  • the cutting blade 50 is made of metal.
  • the base portion 51 , the blade portion 52 and the additional portion 53 of the cutting blade 50 are integrally formed by a suitable metal processing process, which includes stamping.
  • the metal grade can be, for example, 6Cr17 or SUS440B.
  • the cutting blade 50 ′ includes a base portion 51 ′ and a cutting edge portion 52 ′ connected to the base portion 51 ′.
  • the base portion 51' includes a receiving groove 55' in which the blade portion 52' is partially located and is an interference fit, and is partially located above the cartridge body and used to cut tissue.
  • the base portion 51' and the blade portion 52' are made of different materials. Specifically, the base portion 51' is made of plastic, and the blade portion 52' is made of metal.
  • the plastic of the base 51' can be glass fiber reinforced PC, for example.
  • the metal grade of the blade portion 52' can be, for example, 6Cr17 or SUS440B, so as to satisfy the sharpness required for cutting. Since the base portion 51' is made of plastic, not only the manufacturing process is simpler, but also the manufacturing cost of the cutting blade 50' can be reduced, thereby reducing the burden on consumers.
  • the cutting blade 50' further includes an additional portion 53' extending backward from the blade portion 52', and the additional portion 53' is integrally formed with the blade portion 52'.
  • the additional portion 53' and the blade portion 52' are integrally formed by a suitable metal processing process, the metal processing process includes stamping forming, and further, the blade of the blade portion 52' is produced by a grinding process.
  • the cutting blade 50 ′′ includes a base 51 ′′ and a cutting edge 52 ′′ connected to the base 51 ′′.
  • the base portion 51" includes a first through hole 56
  • the blade portion 52 includes a second through hole 57".
  • the rivet passes through the first through hole 56" and the second through hole 57" to realize the connection between the base portion 51" and the blade portion 52". riveting between.
  • the base portion 51" and the blade portion 52" are connected by laser welding.
  • the base portion 51" and the blade portion 52" are made of different grades of metal.
  • the base portion 51" is made of metal with a grade of SUS440 or SUS630
  • the blade portion 52" is made of a metal with a grade of 6Cr17 or SUS440B.
  • the metal grade of the blade portion 52" can meet the required sharpness for cutting, and the metal grade of the base portion 51" can meet the requirement of strength. Using different grades of metal can reduce costs.
  • the cutting blade 50" also includes an additional portion 53".
  • the additional portion 53" extends rearward from the blade portion 52", and the additional portion 53" is integrally formed with the blade portion 52".
  • the additional portion 53" extends backward from the base portion 51", and the additional portion 53" is integrally formed with the base portion 51".
  • the additional portion 53" and the blade portion 52" are integrally formed by a suitable metal processing process, or, the additional portion 53" and the base portion 51" are integrally formed by a suitable metal processing process, and the metal processing process includes stamping forming, further,
  • the blade of the blade portion 52" is made by a grinding process.
  • Figures 19 and 20 show the case where the additional portion 53" and the base portion 51" are integrally formed.
  • this embodiment also includes the additional portion 53" and The case where the blade portion 52" is integrally formed.
  • the blade portion 52" is an independent part, which can avoid being affected by the machining process of other parts, so as to ensure its sharpness. back extension.

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Abstract

一种用于外科器械的钉仓组件（30），其包括切割刀（50）、推动器（42）和沿纵长方向延伸的钉仓本体（41）；钉仓本体（41）开设有沿纵长方向延伸的刀槽（412），切割刀（50）的一部分和推动器（42）的一部分均位于刀槽（412）内，切割刀（50）的一部分位于推动器（42）的一部分的后方，并且切割刀（50）的一部分邻接推动器（42）的一部分；切割刀（50）包括连接部（530），连接部（530）用于与外科器械的推刀件（60）可分离地连接。在切割刀（50）切割组织完毕后，切割刀（50）在推刀件（60）的驱动下能回复至初始位置，即，切割刀（50）不再位于钉仓（40）的前侧，防止切割刀（50）损伤患者组织和医生。

Description

用于外科器械的钉仓组件及外科器械 技术领域
本发明涉及外科器械领域。
背景技术
外科器械为医疗手术中的手术工具，缝合器械为外科器械的一种，其是医学上使用的、替代手工缝合的设备，主要工作原理是利用缝合钉对组织进行吻合，类似于订书机。缝合器械包括一对相配合的细长钳口构件，钳口构件可适于插入患者体内以缝合和/或切割组织，钳口构件可支撑容纳钉仓。目前，现有的钉仓一般包括钉仓本体和设置在钉仓本体内的缝合钉，钉仓本体设置有若干用于收纳缝合钉的缝钉腔。钉仓本体上开设有沿钉仓本体的纵轴线延伸的刀槽，缝钉腔沿纵轴线排列于刀槽的两侧。刀槽供一切割刀安装于内并可沿着该刀槽移动。切割刀包括基部及自基部延伸的刀刃部，基部位于刀槽内并沿刀槽移动，刀刃部位于钉仓本体上方并用于切割组织。缝合器械内设置有推刀件，当安装有切割刀的钉仓安装至缝合器械内时，推刀件与切割刀配合在一起，推刀件抵推切割刀使其在刀槽内行进以切割组织。然而，现有技术中，当安装有切割刀的钉仓安装至缝合器械内时，推刀件与切割刀无法实现固定配合，推刀件只能推动切割刀向前行进而不能驱动切割刀回退，即，当切割刀切割完组织后，推刀件无法将切割刀带回至初始位置。由于钉仓的前侧位于钳口构件(即端部执行器)的开口的前端，无法回退的切割刀的刀刃部外露于钉仓的前侧，在医生将钳口构件从患者体内取出的过程中，刀刃部容易损伤组织，医生更换钉仓时也容易被刀刃部伤害。
发明内容
本发明的目的在于提供一种用于外科器械的钉仓组件，钉仓组件包括切割刀，切割刀在切割组织完毕后回复至初始位置。
为了达到上述目的，本发明通过以下技术方案实现：
一种用于外科器械的钉仓组件，其包括切割刀、推动器和沿纵长方向延伸的钉仓本体；所述钉仓本体开设有沿所述纵长方向延伸的刀槽，所述切割刀的一部分和所述推动器的一部分均位于所述刀槽内，所述切割刀的所述一部分位于所述推动器的所述一部分的后方，并且所述切割刀的所述一部分邻接所述推动器的所述一部分；所述切割刀包括连接部，所述连接部用于与所述外科器械的推刀件可分离地连接。
进一步的，所述钉仓本体包括插入端与末端；在初始状态下，所述推动器位于所述钉仓本体的所述末端，并且所述推动器的一部分超出所述钉仓本体的所述末端的端面。
进一步的，所述钉仓本体包括插入端与末端；所述推动器包括向后延伸的延伸部，在初始状态下，所述延伸部的至少一部分超出所述钉仓本体的所述末端的端面。
进一步的，所述推动器包括限位块及位于所述限位块两侧的抵推件，所述限位块位于所述刀槽内，所述推动器的所述一部分包括所述限位块，所述抵推件包括设置于所述钉仓本体内的抵推部及自所述抵推部向后延伸的所述延伸部。
进一步的，所述延伸部的底面高于所述钉仓本体的底面。
进一步的，所述抵推部为两个，每一所述抵推部包括两个平行设置的抵推块，所述延伸部自所述抵推块向后延伸。
进一步的，每一所述抵推部包括平行设置的第一抵推块与第二抵推块，所述第一抵推块相对于所述第二抵推块更靠近所述限位块，所述延伸部自所述第一抵推块向后延伸。
进一步的，在初始状态下和所述切割刀退刀后，所述连接部位于所述钉仓本体外。
进一步的，所述切割刀包括基部、自所述基部向上延伸的刀刃部及自所述基部向后延伸的附加部，所述基部位于所述刀槽内，所述切割刀的所述一部分包括所述基部；所述附加部包括所述连接部。
进一步的，所述连接部为第一容置结构，所述第一容置结构用于可移出地容置所述推刀件的一部分。
进一步的，所述第一容置结构为向下凹陷形成的凹部。
进一步的，所述钉仓本体包括插入端与末端；所述刀槽将所述钉仓本体分隔成第一侧部与第二侧部，所述钉仓本体的所述末端设有自所述钉仓本体的顶面向上凸伸的第一凸出部与第二凸出部，所述第一凸出部位于所述第一侧部，所述第二凸出部位于所述第二侧部。
进一步的，所述推刀件包括第二容置结构，所述第二容置结构用于可移出地容置所述切割刀的一部分。
进一步的，所述推刀件包括沿所述纵长方向延伸的本体部及自本体部向下延伸的第一延伸部和第二延伸部；所述本体部设有自其底面向上凹陷形成的凹口；所述第一延伸部与所述第二延伸部之间向上凹陷形成另一凹口，所述另一凹口为所述第二容置结构。
进一步的，所述钉仓组件还包括缝合钉和推钉件，所述钉仓本体设置有缝钉腔，所述缝合钉容置于所述缝钉腔内，所述推钉件用于将所述缝合钉从所述缝钉腔内推出；所述推动器用于抵推所述推钉件。
进一步的，所述切割刀一体成型。
进一步的，所述切割刀由金属制成。
进一步的，所述切割刀包括基部、与基部连接的刀刃部、和自所述刀刃部向后延伸的附加部。
进一步的，所述刀刃部与所述基部过盈配合。
进一步的，所述基部和所述刀刃部由不同的材料制成。
进一步的，所述基部由塑料制成，所述刀刃部由金属制成。
进一步的，所述附加部与所述刀刃部一体成型，所述附加部和所述刀刃部均由金属制成。为了达到上述目的，本发明还可通过以下技术方案实现：
一种外科器械，所述外科器械包括杆身组件、设置于所述杆身组件一端的端部执行器；所述杆身组件包括推刀件，所述推刀件的一部分位于所述端部执行器内；所述外科器械还包括根据以上任一项所述的用于外科器械的钉仓组件，所述钉仓组件可拆卸地安装于所述端部执行器。
进一步的，所述端部执行器安装有限位件，所述限位件用于抵接所述推刀件以防止所述推刀件向前移动；所述钉仓组件施力于所述限位件使其脱离所述推刀件。
进一步的，所述端部执行器包括钉仓座及可枢转地连接于所述钉仓座的抵钉座，所述钉仓组件可拆卸地安装于所述钉仓座；所述限位件可枢转地安装于所述钉仓座。
进一步的，所述限位件包括主体部及自所述主体部沿横向向一侧延伸的第一凸柱与沿横向向另一侧延伸的第二凸柱，所述钉仓座包括相对设置的两侧壁，每个所述侧壁设有一个收容孔，所述收容孔包括第一收容孔与第二收容孔，所述第一凸柱可枢转地安装于所述第一收容孔，所述第二凸柱可枢转地安装于所述第二收容孔。
进一步的，所述限位件还包括扭簧。
进一步的，所述限位件还包括自所述主体部延伸的凸块，所述凸块与所述第一凸柱同向延伸；所述扭簧绕设于所述第一凸柱且其一端抵接于所述凸块，另一端抵接于所述钉仓座。
进一步的，所述端部执行器包括钉仓座及可枢转地连接于所述钉仓座的抵钉座；所述外科器械还包括安装在所述钉仓座内的弹片，所述弹片的一端固定于所述钉仓座的底壁，所述弹片的另一端抵接于所述推刀件。
进一步的，所述外科器械还包括手柄组件，所述杆身组件自所述手柄组件延伸；所述手柄组件包括传动机构，所述传动机构连接于所述杆身组件，所述传动机构驱动所述杆身组件向前或向后移动。
进一步的，所述外科器械还包括与所述推刀件的后端连接的芯杆，所述芯杆与所述传动机构连接。
进一步的，所述传动机构包括直线运动的输出件，所述芯杆与所述输出件连接。
本发明的有益效果是：在切割刀切割组织完毕后，切割刀在推刀件的驱动下能回复至初始位置，即，刀刃部不再位于钉仓的前侧，防止刀刃部损伤患者组织和医生。
附图说明
图1是本发明的吻合器的立体结构示意图；
图2是本发明的吻合器的端部执行器与推刀件的结构示意图；
图3是图2所示端部执行器与推刀件的立体分解图；
图4是图3所示钉仓组件与推刀件的结构示意图；
图5是图4所示画圈部分的放大图；
图6是图4所示钉仓组件与推刀件另一角度的结构示意图；
图7是图6所示画圈部分的放大图；
图8是图4所示钉仓组件与推刀件的立体分解图；
图9是图8所示画圈部分的放大图；
图10是图8所示钉仓组件与推刀件进一步的立体分解图；
图11是图10所示画圈部分的放大图；
图12是图8所示限位件的结构示意图；
图13是图10所示抵推件的结构示意图；
图14是图4所示限位件脱离推刀件的第二凹口时的结构示意图；
图15是图14所示画圈部分的放大图；
图16是图14所示切割刀、限位件及推刀件的结构示意图；
图17是本发明另一实施例提供的切割刀的立体图；
图18是图17所示的切割刀的立体分解图；
图19是本发明第三实施例提供的切割刀的立体图；
图20是图19所示的切割刀的立体分解图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出。
“若干”的含义是至少一个。
下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
本发明公开了一种吻合器1000，其包括手柄组件900、自手柄组件900延伸的杆身组件800及设置于杆身组件800一端的端部执行器100。手柄组件包括本体及安装于本体的 传动机构，传动机构连接于杆身组件800，传动机构驱动杆身组件800向前或向后移动。如图2至图3所示，端部执行器100包括钉仓座10及可枢转地连接于钉仓座10的抵钉座20，钉仓组件30可卡合于钉仓座10内，也可自钉仓座10取出，即钉仓组件30可拆卸地安装于钉仓座10。钉仓组件30包括钉仓40及设置于钉仓40的切割刀50。杆身组件包括推刀件60，推刀件60的一部分位于端部执行器100内，推刀件60用于带动切割刀50向前或向后运动。吻合器还包括与推刀件60的后端连接的芯杆，芯杆与传动机构连接。由此，传动机构驱动芯杆，芯杆驱动推刀件60，推刀件60驱动切割刀50向前或向后运动。具体的，传动机构包括直线运动的输出件，芯杆与输出件连接。例如，传动机构包括齿轮齿条配合机构，输出件为齿条，芯杆与齿条连接，推刀件60与芯杆连接，从而齿轮顺次驱动齿条、芯杆、推刀件60直线运动，从而驱动切割刀50向前或向后运动。钉仓座10内还安装有弹片70，弹片70的一端焊接于钉仓座10的底壁11，弹片70的另一端抵接于推刀件60，弹片70对推刀件60具有一个向上的支撑力，使得推刀件60的一部分向上抵接于抵钉座20。本文所用术语“前”、“后”是相对于操纵吻合器100的临床医生而言的，术语“后”是指靠近临床医生的方向，术语“前”是指远离临床医生的方向；本文所用术语“纵长方向”是指前后之间的延伸方向，术语“横向”是指垂直于纵长方向的方向；本文所用术语“上”和“下”是相对而言的，即，“抵钉座20”为“上”，“钉仓座10”为“下”。
结合图4至图13所示，钉仓40包括缝合钉(未图示)、推钉件(未图示)、沿纵长方向延伸的钉仓本体41、安装于钉仓本体41的推动器42、托架43。切割刀50也安装于钉仓本体41，切割刀50与推动器42邻接设置，托架43用于限制推动器42与切割刀50，防止推动器42与切割刀50向下脱离钉仓本体41。邻接是指切割刀50与推动器42相邻、抵接，相互之间不固定，如此，切割刀50向前行进时抵推推动器42向前行进，切割刀50退刀时，推动器42将留在钉仓本体41的前侧。钉仓本体41具有若干缝钉腔411，缝合钉设置于缝钉腔411内，推钉件的一部分也设置于缝钉腔411内且其抵接于缝合钉的底部，当推动器42向前运动时，推动器42驱动推钉件向上运动，推钉件推动缝合钉出钉。在钉仓40不使用的时候，钉仓40上盖合有盖体(未图示)，从而可以防止灰尘等进入钉仓40内。钉仓本体41沿纵长方向开设有刀槽412，刀槽412供切割刀50在内行进。钉仓本体41包括插入端413与末端414，在初始状态下，推动器42位于钉仓本体41的末端414，并且，当切割刀50在刀槽412内向前行进时，切割刀50抵推推动器42向前行进，推动器42抵推推钉件向上运动，推钉件将缝合钉从缝钉腔411内推出。切割刀50包括基部51、自基部51向上延伸的刀刃部52及自基部51向后延伸的附加部53，基部51位于刀槽412内，刀刃部52位于刀槽412上方。附加部53包括连接部530，连接部530用于与推刀件60可分离地连接，在初始状态下，附加部53超出钉仓本体41的后端面，连接部530位于钉仓 本体41外；钉仓本体41的后端面即钉仓本体41的末端414的端面。连接部530为第一容置结构，第一容置结构用于容置推刀件60的一部分，第一容置结构为自附加部53的顶面向下凹陷形成的凹部，即连接部530为凹部。在初始状态下，凹部530位于钉仓本体41外，凹部530用于容置推刀件60的一部分，切割刀50和推刀件60之间既可以连接也可以分离，是可分离地连接。推刀件60与切割刀50相连接时，推刀件60带动切割刀50在刀槽412内向前或向后行进。刀槽412将钉仓本体41分隔成第一侧部4151与第二侧部4152，钉仓本体41的末端414设有自其顶面向上凸伸的第一凸出部4161与第二凸出部4162，第一凸出部4161位于第一侧部4151，第二凸出部4162位于第二侧部4152，在初始状态下，刀刃部52位于第一凸出部4161与第二凸出部4162之间，第一凸出部4161与第二凸出部4162用于保护在初始状态下的刀刃部52以防止刀刃部52被外物损伤，医生在装入钉仓40时也不会被刀刃部52伤害。推动器42包括限位块421及位于限位块421两侧的两个抵推件422，限位块421位于刀槽412内，抵推件422包括设置于钉仓本体41内的抵推部423及自抵推部423向后延伸的延伸部424，在初始状态下，延伸部424超出钉仓本体41的后端面。抵推部423包括平行设置的第一抵推块425与第二抵推块426，第一抵推块425相对于第二抵推块426更靠近限位块421，延伸部424自第一抵推块425向后延伸，延伸部424的底面高于钉仓本体41的底面，延伸部424的底面可以与限位件80抵接(后文将描述)。初始状态包括钉仓组件30未安装入端部执行器100内的状态，还包括钉仓组件安装入端部执行器100内但切割刀50和推动器42未向前移动的状态。切割刀50的基部51和推动器42的限位块421均位于刀槽412中，基部51位于限位块421后方并且基部51与限位块421邻接，切割刀50和推动器42沿刀槽412移动。本文中多处使用“超出”一词，“超出”表示相对于某一基准面而言，某一部件露出该基准面。
钉仓座10内还安装有限位件80，限位件80可枢转地安装于钉仓座10，在初始状态下，限位件80抵接于推刀件60。限位件80包括主体部81及自主体部81沿横向向一侧延伸的第一凸柱82与沿横向向另一侧延伸的第二凸柱83，钉仓座10包括相对设置的第一侧壁12与第二侧壁13，第一侧壁12设有第一收容孔120，第二侧壁13设有第二收容孔130，第一凸柱82收容于第一收容孔120并可在第一收容孔120内旋转，第二凸柱83收容于第二收容孔130并可在第二收容孔130内旋转。限位件80还包括自主体部81延伸的凸块84，凸块84与第一凸柱82同向延伸。限位件80还包括扭簧85，扭簧85绕设于第一凸柱82且其一端抵接于凸块84，另一端抵接于端部执行器100的钉仓座10。主体部81包括平行设置的两个侧臂及连接两个侧臂的连接臂86，两个侧臂分别为第一侧臂87与第二侧臂88，第一凸柱82自第一侧臂87延伸，第二凸柱83自第二侧臂88延伸，第一侧臂87与第二侧臂88之间形成沿上下方向贯通的让位槽89。
推刀件60包括沿纵长方向延伸的本体部61及自本体部61向下延伸的第一延伸部62和第二延伸部63，第一延伸部62和第二延伸部63之间形成第二容置结构，第二容置结构用于容置切割刀50的一部分，第二容置结构为自推刀件60的本体部61的底面向上凹陷形成的第一凹口611，第一凹口611用于容置切割刀50的附加部53的一部分，使得推刀件60与切割刀50之间的连接更加稳定可靠。推刀件60还包括自本体部61的底面向上凹陷形成的第二凹口612，限位件80的连接臂86抵接于第二凹口612，以防止推刀件60在外力的作用下向前移动。第二延伸部63位于第一凹口611与第二凹口612之间，第二延伸部63穿设于让位槽89。
结合图14及图16所示，在钉仓组件30使用的时候，首先将钉仓40上的盖体移除，再将钉仓组件30下压、装入钉仓座10，钉仓组件30施力于限位件80使其脱离推刀件60。当钉仓组件30装入钉仓座10时，推动器42的延伸部424与限位件80的主体部81的侧臂抵接由此向下抵压限位件80的主体部81，使得限位件80的主体部81脱离推刀件60的本体部61，此时，推刀件60在外力的作用下可以向前移动。当抵钉座20枢转进而关闭端部执行器100时，推刀件60的第一延伸部62在抵钉座20的作用下向下移动并进入切割刀50的附加部53的凹部530。当推刀件60向前移动时，推刀件60驱动切割刀50向前移动。当切割刀50由钉仓本体41的末端414移至钉仓本体41的插入端413时，切割组织完毕。推动器42被推到插入端413后不再返回。此时，推刀件60需由钉仓本体41的插入端413退回至钉仓本体41的末端414，在退回过程中，由于推刀件60的第一延伸部62位于切割刀50的附加部53的凹部530内，推刀件60将切割刀50也带回至钉仓本体41的末端414。当切割刀50回复至钉仓本体41的末端414后(即退刀)，抵钉座20枢转进而张开端部执行器100，推刀件60的第一延伸部62在弹片70的作用下向上移动并脱离切割刀50的附加部53的凹部530。限位件80枢转进而使得连接臂86抵接推刀件60的本体部61的第二凹口612，此时，推刀件60在外力的作用下不能向前移动。
当切割刀50回复至钉仓本体41的末端414时，刀刃部52不再位于钉仓40的前侧、端部执行器100张开时的开口的前端，降低刀刃部52损伤患者组织和医生的风险。为了进一步加强保护效果，当切割刀50回复至钉仓本体41的末端414后，刀刃部52位于第一凸出部4161与第二凸出部4162之间，在医生将端部执行器100从患者体内取出的过程中，刀刃部52不会损伤组织，医生取出钉仓40时也不会被刀刃部52伤害。
综上所述，推动器42具有延伸部424，在初始状态下，延伸部424超出钉仓本体41的后端面，当钉仓组件30安装入钉仓座10内后，延伸部424使得限位件80脱离推刀件60，从而使得推刀件60在外力的作用下可以向前移动，推刀件60与钉仓组件30的切割刀50配合，从而使得切割刀50在推刀件60的驱动下顺利在刀槽412内向前行进，达到切割 组织的目的；另一方面，在切割刀50切割完组织后，切割刀50在推刀件60的驱动下能顺利回复至起始位置，避免刀刃部52位于钉仓40的前侧、端部执行器100张开时的开口的前端。进一步地，刀刃部52位于第一凸出部4161与第二凸出部4162之间，第一凸出部4161与第二凸出部4162用于遮挡在切割完组织退刀后的刀刃部52以防止刀刃部52损伤患者组织，医生在取出钉仓40时也不会被刀刃部52伤害。
上一实施例中，切割刀50一体成型。切割刀50由金属制成。具体的，切割刀50的基部51、刀刃部52及附加部53通过合适的金属加工工艺一体成型，金属加工工艺包括冲压成型，进一步地，刀刃部52的刀刃由磨削工艺制得。金属牌号例如可以是6Cr17或SUS440B。
下面描述本发明的另一实施例，请参见图17和图18，在该实施例中，切割刀50'包括基部51'、与基部51'连接的刀刃部52'。基部51'包括容置槽55'，刀刃部52'部分位于容置槽55'中并且与容置槽55'过盈配合、部分位于钉仓本体上方并用于切割组织。基部51'和刀刃部52'由不同的材料制成。具体的，基部51'由塑料制成，刀刃部52'由金属制成。基部51'的塑料例如可以采用玻纤增强PC。刀刃部52'的金属牌号例如可以是6Cr17或SUS440B，从而满足切割所需的锋利度。由于基部51'由塑料制成，不仅制造工艺更简单，而且可以降低切割刀50'的生产制造成本，从而减轻消费者的负担。
切割刀50'还包括自刀刃部52'向后延伸的附加部53'，附加部53'与刀刃部52'一体成型。具体的，附加部53'和刀刃部52'通过合适的金属加工工艺一体成型，金属加工工艺包括冲压成型，进一步地，刀刃部52'的刀刃由磨削工艺制得。
下面描述本发明的第三实施例，请参见图19和图20，在该实施例中，切割刀50″包括基部51″、与基部51″连接的刀刃部52″。基部51″包括第一通孔56″，刀刃部52″包括第二通孔57″，铆钉穿过第一通孔56″、第二通孔57″，实现基部51″与刀刃部52″之间的铆接。或者，基部51″与刀刃部52″之间通过激光焊接的方式连接。基部51″和刀刃部52″由不同牌号的金属制成。具体的，基部51″由牌号为SUS440或SUS630的金属制成，刀刃部52″由牌号为6Cr17或SUS440B的金属制成。刀刃部52″的金属牌号可以满足切割所需的锋利度，基部51″的金属牌号可以满足强度的需求。采用不同牌号的金属，可以降低成本。
切割刀50″还包括附加部53″。附加部53″自刀刃部52″向后延伸，附加部53″与刀刃部52″一体成型。或者，附加部53″自基部51″向后延伸，附加部53″与基部51″一体成型。具体的，附加部53″和刀刃部52″通过合适的金属加工工艺一体成型，或者，附加部53″和基部51″通过合适的金属加工工艺一体成型，金属加工工艺包括冲压成型，进一步地，刀刃部52″的刀刃由磨削工艺制得。图19和图20中示出了附加部53″和基部51″一体成型的情形，需要说明的是，本实施例还包括附加部53″和刀刃部52″一体成型的情形。优选地，刀刃部52″独立成为一个部件，可以避免其受其它部件加工过程的影响，从而保证其锋利度，此时， 附加部53″自基部51″向后延伸。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型，上述变化、修改、替换和变型后的技术方案均在本发明的保护范围内。

Claims (37)

  1. 一种用于外科器械的钉仓组件，其包括切割刀、推动器和沿纵长方向延伸的钉仓本体；所述钉仓本体开设有沿所述纵长方向延伸的刀槽，所述切割刀的一部分和所述推动器的一部分均位于所述刀槽内，所述切割刀的所述一部分位于所述推动器的所述一部分的后方，并且所述切割刀的所述一部分邻接所述推动器的所述一部分；其特征在于：所述切割刀包括连接部，所述连接部用于与所述外科器械的推刀件可分离地连接。
  2. 根据权利要求1所述的用于外科器械的钉仓组件，其特征在于：所述钉仓本体包括插入端与末端；在初始状态下，所述推动器位于所述钉仓本体的所述末端，并且所述推动器的一部分超出所述钉仓本体的所述末端的端面。
  3. 根据权利要求1、2任一项所述的用于外科器械的钉仓组件，其特征在于：所述钉仓本体包括插入端与末端；所述推动器包括向后延伸的延伸部，在初始状态下，所述延伸部的至少一部分超出所述钉仓本体的所述末端的端面。
  4. 根据权利要求3所述的用于外科器械的钉仓组件，其特征在于：所述推动器包括限位块及位于所述限位块两侧的抵推件，所述限位块位于所述刀槽内，所述推动器的所述一部分包括所述限位块，所述抵推件包括设置于所述钉仓本体内的抵推部及自所述抵推部向后延伸的所述延伸部。
  5. 根据权利要求3、4任一项所述的用于外科器械的钉仓组件，其特征在于：所述延伸部的底面高于所述钉仓本体的底面。
  6. 根据权利要求4所述的用于外科器械的钉仓组件，其特征在于：所述抵推部为两个，每一所述抵推部包括两个平行设置的抵推块，所述延伸部自所述抵推块向后延伸。
  7. 根据权利要求6所述的用于外科器械的钉仓组件，其特征在于：每一所述抵推部包括平行设置的第一抵推块与第二抵推块，所述第一抵推块相对于所述第二抵推块更靠近所述限位块，所述延伸部自所述第一抵推块向后延伸。
  8. 根据权利要求1所述的用于外科器械的钉仓组件，其特征在于：在初始状态下和所述切割刀退刀后，所述连接部位于所述钉仓本体外。
  9. 根据权利要求1、8任一项所述的用于外科器械的钉仓组件，其特征在于：所述切割刀包括基部、自所述基部向上延伸的刀刃部及自所述基部向后延伸的附加部，所述基部位于所述刀槽内，所述切割刀的所述一部分包括所述基部；所述附加部包括所述连接部。
  10. 根据权利要求1、8、9任一项所述的用于外科器械的钉仓组件，其特征在于：所述连接部为第一容置结构，所述第一容置结构用于可移出地容置所述推刀件的一部分。
  11. 根据权利要求10所述的用于外科器械的钉仓组件，其特征在于：所述第一容置结构为向下凹陷形成的凹部。
  12. 根据权利要求1所述的用于外科器械的钉仓组件，其特征在于：所述钉仓本体包括插入端与末端；所述刀槽将所述钉仓本体分隔成第一侧部与第二侧部，所述钉仓本体的所述末端设有自所述钉仓本体的顶面向上凸伸的第一凸出部与第二凸出部，所述第一凸出部位于所述第一侧部，所述第二凸出部位于所述第二侧部。
  13. 根据权利要求1所述的用于外科器械的钉仓组件，其特征在于：所述推刀件包括第二容置结构，所述第二容置结构用于可移出地容置所述切割刀的一部分。
  14. 根据权利要求13所述的用于外科器械的钉仓组件，其特征在于：所述推刀件包括沿所述纵长方向延伸的本体部及自本体部向下延伸的第一延伸部和第二延伸部；所述本体部设有自其底面向上凹陷形成的凹口；所述第一延伸部与所述第二延伸部之间向上凹陷形成另一凹口，所述另一凹口为所述第二容置结构。
  15. 根据权利要求1所述的用于外科器械的钉仓组件，其特征在于：所述钉仓组件还包括缝合钉和推钉件，所述钉仓本体设置有缝钉腔，所述缝合钉容置于所述缝钉腔内，所述推钉件用于将所述缝合钉从所述缝钉腔内推出；所述推动器用于抵推所述推钉件。
  16. 根据权利要求1所述的用于外科器械的钉仓组件，其特征在于：所述切割刀一体成型。
  17. 根据权利要求16所述的用于外科器械的钉仓组件，其特征在于：所述切割刀由金属制成。
  18. 根据权利要求1所述的用于外科器械的钉仓组件，其特征在于：所述切割刀包括基部、与基部连接的刀刃部、和自所述刀刃部向后延伸的附加部。
  19. 根据权利要求18所述的用于外科器械的钉仓组件，其特征在于：所述刀刃部与所述基部过盈配合。
  20. 根据权利要求18所述的用于外科器械的钉仓组件，其特征在于：所述基部和所述刀刃部由不同的材料制成。
  21. 根据权利要求20所述的用于外科器械的钉仓组件，其特征在于：所述基部由塑料制成，所述刀刃部由金属制成。
  22. 根据权利要求18所述的用于外科器械的钉仓组件，其特征在于：所述附加部与所述刀刃部一体成型，所述附加部和所述刀刃部均由金属制成。
  23. 根据权利要求1所述的用于外科器械的钉仓组件，其特征在于：所述切割刀包括基部、刀刃部和附加部，所述刀刃部与所述基部连接，所述附加部自所述基部向后延伸。
  24. 根据权利要求18或23所述的用于外科器械的钉仓组件，其特征在于：所述刀刃部与所述基部的连接方式为铆接或激光焊接。
  25. 根据权利要求18或23所述的用于外科器械的钉仓组件，其特征在于：所述基部、 所述刀刃部和所述延伸部均由金属制成。
  26. 根据权利要求23所述的用于外科器械的钉仓组件，其特征在于：所述基部和自所述基部向后延伸的附加部均由第一牌号的金属制成，所述刀刃部由第二牌号的金属制成，所述第一牌号与所述第二牌号不同。
  27. 根据权利要求18所述的用于外科器械的钉仓组件，其特征在于：所述基部由第一牌号的金属制成，所述刀刃部和自所述刀刃部向后延伸的附加部均由第二牌号的金属制成，所述第一牌号与所述第二牌号不同。
  28. 一种外科器械，所述外科器械包括杆身组件、设置于所述杆身组件一端的端部执行器；所述杆身组件包括推刀件，所述推刀件的一部分位于所述端部执行器内；其特征在于：所述外科器械还包括根据权利要求1-27任一项所述的用于外科器械的钉仓组件，所述钉仓组件可拆卸地安装于所述端部执行器。
  29. 根据权利要求28所述的外科器械，其特征在于：所述端部执行器安装有限位件，所述限位件用于抵接所述推刀件以防止所述推刀件向前移动；所述钉仓组件施力于所述限位件使其脱离所述推刀件。
  30. 根据权利要求29所述的外科器械，其特征在于：所述端部执行器包括钉仓座及可枢转地连接于所述钉仓座的抵钉座，所述钉仓组件可拆卸地安装于所述钉仓座；所述限位件可枢转地安装于所述钉仓座。
  31. 根据权利要求30所述的外科器械，其特征在于：所述限位件包括主体部及自所述主体部沿横向向一侧延伸的第一凸柱与沿横向向另一侧延伸的第二凸柱，所述钉仓座包括相对设置的两侧壁，每个所述侧壁设有一个收容孔，所述收容孔包括第一收容孔与第二收容孔，所述第一凸柱可枢转地安装于所述第一收容孔，所述第二凸柱可枢转地安装于所述第二收容孔。
  32. 根据权利要求31所述的外科器械，其特征在于：所述限位件还包括扭簧。
  33. 根据权利要求32所述的外科器械，其特征在于：所述限位件还包括自所述主体部延伸的凸块，所述凸块与所述第一凸柱同向延伸；所述扭簧绕设于所述第一凸柱且其一端抵接于所述凸块，另一端抵接于所述钉仓座。
  34. 根据权利要求28所述的外科器械，其特征在于：所述端部执行器包括钉仓座及可枢转地连接于所述钉仓座的抵钉座；所述外科器械还包括安装在所述钉仓座内的弹片，所述弹片的一端固定于所述钉仓座的底壁，所述弹片的另一端抵接于所述推刀件。
  35. 根据权利要求28所述的外科器械，其特征在于：所述外科器械还包括手柄组件，所述杆身组件自所述手柄组件延伸；所述手柄组件包括传动机构，所述传动机构连接于所述杆身组件，所述传动机构驱动所述杆身组件向前或向后移动。
  36. 根据权利要求35所述的外科器械，其特征在于：所述外科器械还包括与所述推刀件的后端连接的芯杆，所述芯杆与所述传动机构连接。
  37. 根据权利要求36所述的外科器械，其特征在于：所述传动机构包括直线运动的输出件，所述芯杆与所述输出件连接。
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