CN112690847A - Surgical instrument - Google Patents
Surgical instrument Download PDFInfo
- Publication number
- CN112690847A CN112690847A CN201911012977.4A CN201911012977A CN112690847A CN 112690847 A CN112690847 A CN 112690847A CN 201911012977 A CN201911012977 A CN 201911012977A CN 112690847 A CN112690847 A CN 112690847A
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- Prior art keywords
- cutting
- cutting knife
- nail
- knife
- pushing
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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
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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
-
- 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
- A61B17/32—Surgical cutting instruments
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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
- A61B2017/0023—Surgical instruments, devices or methods, e.g. tourniquets disposable
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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
- A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
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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
- A61B2017/07214—Stapler heads
- A61B2017/07257—Stapler heads characterised by its anvil
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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
- A61B2017/07214—Stapler heads
- A61B2017/07285—Stapler heads characterised by its cutter
Abstract
The invention relates to a surgical instrument, which connects a cutting knife to a movable end of a pull knife rod through a rotating shaft, the pull knife rod pushes the cutting knife to touch a pushing part at the far end of a cutting groove so as to enable the cutting knife to turn over and protrude out of a first tissue contact surface, the cutting knife is changed from a first position to a second position, and a clamping component at the second position keeps the position of the cutting knife relative to the pull knife rod fixed. The drive assembly is sewed up the nail by near-end to distal end percussion, sews up complete shaping back, and drive assembly drive draws cutter pole and cutting knife are drawn back by distal end to near-end, organizes the cutting, has guaranteed to sew up and has cut again after the complete shaping to realize unified nail height and form of forming, reduce the purpose of the hemorrhage seepage of anastomotic stoma.
Description
Technical Field
The invention relates to a surgical instrument, in particular to a cutting knife of the surgical instrument.
Background
In the treatment of general surgery department, the linear type cutting anastomat is a surgical tool which is often used for finishing the cutting and anastomosis functions of tissues, is a device which is used in medicine and replaces manual suture, the existing linear type cutting anastomat pushes a nail pushing sheet arranged in a nail bin to start the triggering action of titanium nails through a triggering push rod, the triggering push rod and a cutter push rod move simultaneously, however, due to the short interval time between the suturing and the cutting, when the shape of a suture nail formed by extruding the titanium nails is unstable, the cutting action which is immediately carried out pulls the sutured tissues to cause the displacement of the tissues, and the height and the consistency of the formed nails are influenced. Finally, the phenomena of great discreteness of the height of the existing nail, local bleeding after anastomosis and the like are generated.
Disclosure of Invention
The invention aims to provide a surgical operation instrument which is used for realizing nail forming before cutting.
In order to achieve the purpose, the invention provides the following technical scheme: a surgical instrument is characterized by comprising a handle, a nail anvil and a nail bin bracket which are arranged at one end of the handle side by side and are arranged oppositely, a closing pressure rod which is arranged on the handle and is used for driving the nail anvil and the nail bin bracket to be closed, a nail pushing rod and a knife pulling rod which are arranged in the handle, and a driving component which is arranged on the handle and is used for driving the nail pushing rod and the knife pulling rod to move along the longitudinal direction of the nail anvil, wherein the nail anvil comprises a first tissue contact surface used for being in contact with the sutured tissue;
the nail anvil is provided with a near end connected with the handle and a far end far away from the handle, a cutting groove is formed in the nail anvil in the longitudinal direction, a pushing part is formed in the cutting groove, and the pushing part is positioned on one side of the cutting groove close to the far end; the cutter pulling rod is provided with a movable end which is inserted into the cutting groove and can move in the cutting groove, a cutter is movably arranged on the movable end, the cutter is connected with the movable end through a rotating shaft, and the cutter can turn over relative to the movable end around the rotating shaft;
a clamping component which enables the cutting knife to be kept at a first position and a second position is formed between the movable end and the cutting knife, and when the cutting knife is located at the first position, the cutting edge of the cutting knife does not protrude out of the first tissue contact surface; when the cutting knife is in the second position, the cutting edge of the cutting knife protrudes out of the first tissue contact surface;
and a pushing part is formed in the cutting groove, and the broach rod pushes the cutting knife to touch the pushing part so as to change the cutting knife from a first position to a second position.
Further, a nail bin assembly is mounted on the nail bin support, and a pushing groove corresponding to the cutting groove is formed in the nail bin assembly.
In order to achieve the above purpose, the present invention further provides a surgical instrument, which is characterized in that the surgical instrument includes a handle, a nail anvil and a nail bin support which are arranged at one end of the handle side by side and are arranged oppositely, a closing pressure lever which is arranged on the handle and is used for driving the nail anvil and the nail bin support to close, a nail pushing rod and a knife pulling rod which are arranged in the handle, and a driving component which is arranged on the handle and is used for driving the nail pushing rod and the knife pulling rod to move along the longitudinal direction of the nail bin support, wherein a nail bin body is mounted on the nail bin support, and the nail bin body has a second tissue contact surface which is in contact with the sutured tissue;
the nail bin is characterized in that the nail bin body is provided with a near end connected with the handle and a far end far away from the handle, a pushing groove is formed in the nail bin body in the longitudinal direction, a pushing part is formed in the pushing groove, and the pushing part is positioned on one side, close to the far end, of the pushing groove; the broach rod is provided with a movable end which is inserted into the pushing groove and can move in the pushing groove, a cutting knife is movably arranged on the movable end, the cutting knife is connected with the movable end through a rotating shaft, and the cutting knife can turn around the rotating shaft relative to the movable end;
a clamping component which enables the cutting knife to be kept at a first position and a second position is formed between the movable end and the cutting knife, and when the cutting knife is located at the first position, the cutting edge of the cutting knife does not protrude out of a second tissue contact surface; when the cutting knife is in the second position, the cutting edge of the cutting knife protrudes out of the second tissue contact surface;
and a pushing part is formed in the pushing groove, and the broach rod pushes the cutting knife to touch the pushing part so as to change the cutting knife from a first position to a second position.
Further, a cutting groove corresponding to the pushing groove is formed in the nail anvil.
Furthermore, an elastic piece is arranged between the cutting knife and the broach rod, and the elastic piece applies rotating force to the cutting knife when the cutting knife is changed from a first position and a second position.
Further, the elastic part is a torsion spring sleeved on the rotating shaft.
Furthermore, the clamping component comprises a buckle and a first clamping groove and a second clamping groove, wherein the first clamping groove is matched with the buckle and then enables the cutting knife to be located at a first position, and the second clamping groove is matched with the buckle and then enables the cutting knife to be located at a second position.
Further, the first clamping groove and the second clamping groove are arranged on the cutting knife, and the buckle is arranged on the movable end.
Furthermore, the movable end of the broach rod comprises two side plates which are oppositely arranged, the cutting knife is clamped between the two side plates, and the buckle is formed on each side plate.
Further, when the cutting knife is in the second position, the cutting edge of the cutting knife is perpendicular to the pull rod.
The invention has the beneficial effects that: this surgical operation apparatus connects the cutting knife on the activity end of broach pole through the rotation axis, and the broach pole promotes the cutting knife and touches with the portion of pushing away of cutting groove distal end so that the cutting knife upset is stretched out first tissue contact surface suddenly, and the cutting knife becomes the second position by the primary importance, and the position that the subassembly kept the cutting knife for the broach pole is fixed to the second position card. The drive assembly is sewed up the nail by near-end to distal end percussion, sews up complete shaping back, and drive assembly drive draws cutter pole and cutting knife are drawn back by distal end to near-end, organizes the cutting, has guaranteed to sew up and has cut again after the complete shaping to realize unified nail height and form of forming, reduce the purpose of the hemorrhage seepage of anastomotic stoma.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a surgical instrument according to an embodiment of the present invention;
FIG. 2 is a partial, schematic structural view of the anvil of FIG. 1;
FIG. 3 is a schematic view of the drawing bar of FIG. 1;
FIG. 4 is an enlarged view of circle A in FIG. 3;
FIG. 5 is an assembly view of the broach bar, torsion spring, cutting knife of FIG. 1, with the cutting knife in a first position;
FIG. 6 is an assembly view of the broach bar, torsion spring, cutting knife of FIG. 1, with the cutting knife in a second position;
fig. 7 is an assembly view of the cutting blade and torsion spring of fig. 1.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 7, a surgical instrument according to a preferred embodiment of the present invention includes a handle 1, an anvil 2 and a cartridge holder 3 disposed at one end of the handle 1 side by side and opposite to each other, a cartridge assembly 4 mounted on the cartridge holder 3, a closing pressing rod 5 disposed on the handle 1 for driving the anvil 2 and the cartridge holder 3, a staple pushing rod 6 and a knife pulling rod 7 disposed in the handle 1, a cutting knife 8 disposed on the knife pulling rod 7, and a driving assembly 9 disposed on the handle 1 for driving the staple pushing rod 6 and the knife pulling rod 7 to move along a longitudinal direction of the anvil 2. It should be noted that, in the present embodiment, in practical use, the driving assembly 9 drives the nail pushing rod 6 and the cutter pulling rod 7 to move simultaneously. The handle 1, the closing plunger 5 and the driving assembly 9 are of conventional design and will not be described in detail here.
The anvil 2 has a distal end 21 and a proximal end opposite to each other, the proximal end of the anvil 2 is connected to the handle 1, and the distal end 21 is an end far from the handle 1. The anvil 2 includes a first tissue contacting surface 23 for contacting tissue (not shown) to be stapled. The nail anvil 2 is provided with a cutting groove 24 extending along the longitudinal direction (the direction indicated by the arrow a shown in fig. 1) of the nail anvil 2. A pushing part 25 is formed in the cutting groove 24, and the pushing part 25 is arranged on one side of the cutting groove 24 close to the far end 21. In this embodiment, the pushing portion 25 is a front end wall of the cutting groove 24, and is shaped with a slope.
The draw bar 7 has a movable end 71 inserted into the cutting groove 24 and movable in the cutting groove 24, and in detail: the broach rod 7 comprises a rod body 72 extending along the longitudinal square of the anvil 2 and a knife body mounting part formed at the front end of the rod body 72, the knife body mounting part is a movable end 71, and one end of the rod body 72 far away from the movable end 71 is connected with the driving assembly 9. The movable end 71 of the draw bar 7 includes two side plates 711 extending forward from the bar body 72, respectively. The two side plates 711 are oppositely arranged, and an accommodating cavity 712 is formed between the two side plates 711.
The cutting knife 8 is movably arranged on the movable end 71, and specifically, the cutting knife 8 is clamped between the two side plates 711 and is located in the accommodating cavity 712. The cutting knife 8 is connected with the movable end 71 through a rotating shaft 85, and the cutting knife 8 can turn over relative to the movable end 71 around the rotating shaft 85. In the present embodiment, the rotation shaft 85 is formed on the cutter blade 8.
A retaining assembly is formed between the movable end 71 and the cutting blade 8 for retaining the cutting blade 8 in a first position (shown in fig. 6) and a second position (shown in fig. 5), wherein when the cutting blade 8 is in the first position, the cutting edge 81 of the cutting blade 8 does not protrude beyond the first tissue contacting surface 23; when the cutting blade 8 is in the second position, the cutting edge 81 of the cutting blade 8 protrudes beyond the first tissue contacting surface 23; the cutter bar 7 pushes the cutter 8 to touch the pushing part 25 so that the cutter 8 changes from the first position to the second position. In this embodiment, when the cutting knife 8 is at the first position, i.e. the initial position, the cutting edge 81 of the cutting knife 8 is parallel to the broaching bar 7; when the cutting blade 8 is in the second position, the cutting edge 81 of the cutting blade 8 is perpendicular to the pull rod 7.
In this embodiment, the retaining assembly includes a buckle 74, a first retaining groove 82 and a second retaining groove 83, wherein the first retaining groove 82 and the second retaining groove 82 are respectively engaged with the buckle 74 to enable the cutting blade 8 to be located at a first position and the second retaining groove 83 is engaged with the buckle 74 to enable the cutting blade 8 to be located at a second position. Specifically, the method comprises the following steps: the catch 74 is formed on each side plate 711, and the first and second locking grooves 82, 83 are provided on the cutting blade 8. In detail, the latch 74 is a projection formed to project inward from the side plate 711, and the section of the projection is trapezoidal in the longitudinal direction of the broach rod 7 (the longitudinal direction of the broach rod 7 is the same as the longitudinal direction of the anvil 2). Besides this embodiment, the latch 74 may be disposed on the cutting blade 8, and the first latch 82 and the second latch 83 may be disposed on the movable end 71 of the broach rod 7, as long as a latch assembly is formed between the movable end 71 and the cutting blade 8 to keep the cutting blade 8 at the first position and the second position, which can achieve the object of the present invention.
Because the change of the position of the cutting knife 8 needs to be realized by touching the pushing part 25, and for the cutting knife 8 to be more convenient to change from the first position to the second position and reducing the manufacturing difficulty of the pushing part 25, an elastic part 10 is arranged between the cutting knife 8 and the broach rod 7, and the elastic part 10 applies a rotating force to the cutting knife 8 when the cutting knife 8 is changed from the first position and the second position. Specifically, the elastic member 10 is a torsion spring sleeved on the rotating shaft 85. One end of the torsion spring 10 abuts against the cutting knife 8, and the other end abuts against the broach rod 7. It should be noted that, in the position shown in fig. 1, the cutter bar 7 drives the cutter 8 to move to a position to be close to the abutting portion 25, and at this time, the cutter 8 is in the first position.
The cutting groove 24 has two groove walls 241 oppositely disposed. The cutting groove 24 includes an accommodating portion 242 disposed near the distal end 21 and a sliding portion 243 extending from the accommodating portion 242 toward the proximal end. The groove width of the accommodating portion 242 is larger than that of the sliding portion 243, and the pushing portion 25 is located in the accommodating portion 242. Specifically, the groove width of the accommodating portion 242 is larger than a deformation space required for deformation of the buckle 74 when the buckle 74 on the side plate 711 slides to the second locking groove 83 after being separated from the first locking groove 82, and the groove width of the sliding portion 243 is smaller than a deformation space required for deformation of the buckle 74 when the buckle 74 on the side plate 711 slides to the second locking groove 83 after being separated from the first locking groove 82.
The cartridge assembly 4 is a conventional structure, and the cartridge assembly 4 includes a cartridge body having a second tissue contact surface (not numbered) contacting the stapled tissue, and the cartridge body is formed with an advancing groove (not shown) extending along a longitudinal direction of the cartridge body (a direction indicated by an arrow a shown in fig. 1), and the advancing groove penetrates through the second tissue contact surface. This impel the groove and correspond the setting with cutting groove 24, cutting knife 8 is when the cutting, and cutting edge 81 part of cutting knife 8 is deepened to impel the inslot to better completion cutting.
The surgical instrument works as follows: a closing pressure lever 5 is arranged on the handle 1 through a guide pin (not numbered) and is used for driving the nail anvil 2 and the nail bin bracket 3 to be closed; the nail pushing rod 6 and the broach rod 7 are arranged in the handle 1; the closing pressure lever 5 is pressed to close the nail anvil 2 and the nail bin bracket 3, so that the nail anvil 2 and the nail anvil 2 assembly on the nail bin bracket 3 clamp tissues; the percussion push button is pressed, the driving component 9 drives the nail pushing rod 6 and the broach rod 7 at the same time, the driving component 9 drives the nail pushing rod 6 to move towards the direction far away from the handle 1, and suturing nails in the nail bin component 4 are pushed out to suture tissues; the driving assembly 9 drives the broach rod 7 to move towards the far end 21 at the near end of the anvil 2, at the far end 21 of the anvil 2, the cutting knife 8 continues to move forwards under the driving of the driving assembly 9 so as to touch the abutting portion 25, under the reverse action of the abutting portion 25, the cutting knife 8 rotates relative to the movable end 71 so as to separate the first clamping groove 82 from the buckle 74, at this time, the cutting knife 8 rapidly turns over under the driving of the torsion spring, and at the same time, the driving assembly 9 still drives the cutting knife 8 to move towards the abutting portion 25, at this time, under the pulling force of the torsion spring 10 and the reaction force of the abutting portion 25, the cutting knife 8 turns over to the second position, the second clamping groove 83 is clamped with the buckle 74, and the cutting edge 81 of the cutting knife 8 protrudes out of the first tissue contact surface 23 and partially extends into the pushing groove; then, the driving assembly 9 drives the cutter bar 7 to pull back, and the cutter 8 moves towards the near end at the far end 21 of the anvil 2 in the cutting groove 24, so that the cutting of the tissue is completed.
In the above described embodiment, the knife bar 7 moves inside the anvil 2, although in other embodiments it is possible to arrange the knife bar 7 in a cartridge that moves, this surgical instrument being different from the previous embodiments in that: a pushing part is formed in the pushing groove and is positioned on one side of the pushing groove close to the far end; the broach rod is provided with a movable end which is inserted into the pushing groove and can move in the pushing groove, a cutting knife is movably arranged on the movable end, the cutting knife is connected with the movable end through a rotating shaft, and the cutting knife can turn around the rotating shaft relative to the movable end; a clamping component which enables the cutting knife to be kept at a first position and a second position is formed between the movable end and the cutting knife, and when the cutting knife is located at the first position, the cutting edge of the cutting knife does not protrude out of a second tissue contact surface; when the cutting knife is in the second position, the cutting edge of the cutting knife protrudes out of the second tissue contact surface; and a pushing part is formed in the pushing groove, and the broach rod pushes the cutting knife to touch the pushing part so as to change the cutting knife from a first position to a second position. The nail anvil is provided with a cutting groove corresponding to the propelling groove.
The surgical instrument may be a disposable item.
This surgical operation apparatus passes through the rotation axis setting with the cutting knife at the expansion end that draws the cutter arbor, upwards overturns to the second position under the effect that cuts groove distal end support portion, and the cutting edge part is deepened to pushing away the inslot, sews up complete shaping back, by distal end to near-end pull-back, organizes the cutting, has guaranteed to sew up and has cut again after the complete shaping of nail to realize unified one-tenth nail height and form, reduce the mesh of the hemorrhage seepage of coincide mouth.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A surgical instrument is characterized by comprising a handle, a nail anvil and a nail bin bracket which are arranged at one end of the handle side by side and are arranged oppositely, a closing pressure rod which is arranged on the handle and is used for driving the nail anvil and the nail bin bracket to be closed, a nail pushing rod and a knife pulling rod which are arranged in the handle, and a driving component which is arranged on the handle and is used for driving the nail pushing rod and the knife pulling rod to move along the longitudinal direction of the nail anvil, wherein the nail anvil comprises a first tissue contact surface used for being in contact with the sutured tissue;
the nail anvil is characterized by comprising a near end connected with the handle and a far end far away from the handle, a cutting groove is formed in the nail anvil in the longitudinal direction, a pushing part is formed in the cutting groove, and the pushing part is positioned on one side of the cutting groove close to the far end; the cutter pulling rod is provided with a movable end which is inserted into the cutting groove and can move in the cutting groove, a cutter is movably arranged on the movable end, the cutter is connected with the movable end through a rotating shaft, and the cutter can turn over relative to the movable end around the rotating shaft;
a clamping component which enables the cutting knife to be kept at a first position and a second position is formed between the movable end and the cutting knife, and when the cutting knife is located at the first position, the cutting edge of the cutting knife does not protrude out of the first tissue contact surface; when the cutting knife is in the second position, the cutting edge of the cutting knife protrudes out of the first tissue contact surface;
and a pushing part is formed in the cutting groove, and the broach rod pushes the cutting knife to touch the pushing part so as to change the cutting knife from a first position to a second position.
2. The surgical instrument of claim 1, wherein a cartridge assembly is mounted to the cartridge holder and has an advance slot corresponding to the cutting slot.
3. A surgical instrument is characterized by comprising a handle, a nail anvil and a nail bin bracket which are arranged at one end of the handle side by side and are arranged oppositely, a closing pressure rod which is arranged on the handle and is used for driving the nail anvil and the nail bin bracket to be closed, a nail pushing rod and a knife pulling rod which are arranged in the handle, and a driving component which is arranged on the handle and is used for driving the nail pushing rod and the knife pulling rod to move along the lengthwise direction of the nail bin bracket, wherein a nail bin body is arranged on the nail bin bracket, and the nail bin body is provided with a second tissue contact surface which is in contact with the sutured tissue;
the nail bin is characterized in that the nail bin body is provided with a near end connected with the handle and a far end far away from the handle, a pushing groove is formed in the nail bin body in the longitudinal direction, a pushing part is formed in the pushing groove, and the pushing part is positioned on one side, close to the far end, of the pushing groove; the broach rod is provided with a movable end which is inserted into the pushing groove and can move in the pushing groove, a cutting knife is movably arranged on the movable end, the cutting knife is connected with the movable end through a rotating shaft, and the cutting knife can turn around the rotating shaft relative to the movable end;
a clamping component which enables the cutting knife to be kept at a first position and a second position is formed between the movable end and the cutting knife, and when the cutting knife is located at the first position, the cutting edge of the cutting knife does not protrude out of a second tissue contact surface; when the cutting knife is in the second position, the cutting edge of the cutting knife protrudes out of the second tissue contact surface;
and a pushing part is formed in the pushing groove, and the broach rod pushes the cutting knife to touch the pushing part so as to change the cutting knife from a first position to a second position.
4. The surgical instrument of claim 3, wherein the anvil defines a cutting slot corresponding to the pushing slot.
5. A surgical instrument according to any one of claims 1 to 4, wherein a resilient member is provided between the cutting blade and the pull rod, the resilient member applying a rotational force to the cutting blade as it changes from the first position to the second position.
6. The surgical instrument of claim 5, wherein the resilient member is a torsion spring disposed about the rotational axis.
7. The surgical instrument of any one of claims 1-4, wherein the catch assembly comprises a catch and a first catch that engages the catch to position the cutting blade in the first position and a second catch that engages the catch to position the cutting blade in the second position, respectively.
8. The surgical instrument of claim 7, wherein the first and second detents are disposed on a cutting blade and the catch is disposed on the active end.
9. The surgical instrument of claim 8, wherein the movable end of the broach bar comprises two oppositely disposed side plates between which the cutting burr is captured, the catch being formed on each side plate.
10. A surgical instrument according to any one of claims 1 to 4, wherein the cutting blade has a cutting edge perpendicular to the pull rod when the cutting blade is in the second position.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012977.4A CN112690847A (en) | 2019-10-23 | 2019-10-23 | Surgical instrument |
| PCT/CN2019/119606 WO2021077513A1 (en) | 2019-10-23 | 2019-11-20 | Surgical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012977.4A CN112690847A (en) | 2019-10-23 | 2019-10-23 | Surgical instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112690847A true CN112690847A (en) | 2021-04-23 |
Family
ID=75505116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911012977.4A Pending CN112690847A (en) | 2019-10-23 | 2019-10-23 | Surgical instrument |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112690847A (en) |
| WO (1) | WO2021077513A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023046033A1 (en) * | 2021-09-06 | 2023-03-30 | 江苏风和医疗器材股份有限公司 | Staple magazine assembly and surgical instrument |
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| WO2023046033A1 (en) * | 2021-09-06 | 2023-03-30 | 江苏风和医疗器材股份有限公司 | Staple magazine assembly and surgical instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021077513A1 (en) | 2021-04-29 |
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