CN109480962B - Cutting wire of cutting knife - Google Patents
Cutting wire of cutting knife Download PDFInfo
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- CN109480962B CN109480962B CN201811564109.2A CN201811564109A CN109480962B CN 109480962 B CN109480962 B CN 109480962B CN 201811564109 A CN201811564109 A CN 201811564109A CN 109480962 B CN109480962 B CN 109480962B
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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
- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
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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
- A61B2017/00743—Type of operation; Specification of treatment sites
- A61B2017/00796—Breast surgery
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Abstract
The invention discloses a cutting wire of a cutting knife. The incision knife wire comprises a first knife wire used for transmitting driving force and torque and a second knife wire used for cutting a surgical part, wherein the first knife wire and the second knife wire are fixedly connected to form a knife wire. Wherein: the rigidity of the first cutter wire is greater than that of the second cutter wire, and the first cutter wire can meet the rigidity requirement required by transmission driving; the flexibility of the second blade wire is greater than the flexibility of the first blade wire. Therefore, when the cutting knife thread is used in the nipple cutting knife, the rigidity requirement required by transmission driving can be met to ensure that the direction of the head end of the cutting knife can be effectively adjusted by rotating the handle of the nipple cutting knife, and meanwhile, the head end of the cutting knife can be made soft and flexible to improve the success of inserting nipples.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a cutting wire of a cutting knife.
Background
A transendothelial papillary sphincters (ESTs) is a treatment technique that has been developed further based on a diagnostic ERCP (endoscopic retrograde cholangiopancreatography) technique and that is used to incise the distal portions of the duodenal papillary sphincters and the common bile duct under an endoscope using a dedicated papillary incision knife. Referring to FIG. 1, FIG. 1 is a schematic diagram of a duodenal papillary sphincterotomy in the prior art.
Nipple incision knife needs: the cutting knife head end is soft and flexible and has a certain pre-bending angle so as to facilitate intubation, and the direction of the cutting knife head end can be effectively adjusted through rotating the handle. However, in the current market, the cutter wire in the duodenal papilla incision knife is a metal wire rope, and although the cutter wire has good operability in angular rotation, the flexibility of the catheter part at the head end of the incision knife is insufficient due to the rigidity problem of the wire rope, so that the success of inserting the papilla is low, and the operation efficiency is affected.
Therefore, how to make the incision knife thread in the duodenal papilla incision knife meet the rigidity requirement required by the transmission drive so as to ensure that the direction of the incision knife head end can be effectively adjusted by rotating the handle, and the incision knife head end can be made soft and flexible so as to improve the success of inserting the papilla is an urgent technical problem to be solved by technical personnel in the field at present.
Disclosure of Invention
In view of the above, the present invention is directed to a cutting blade for a nipple knife, which can satisfy the requirement of rigidity required for driving transmission to ensure that the direction of the head end of the cutting blade can be effectively adjusted by rotating the handle of the nipple knife, and can make the head end of the cutting blade flexible and flexible to improve the success of inserting the nipple.
In order to achieve the purpose, the invention provides the following technical scheme:
a cutting knife wire comprises a first knife wire and a second knife wire, wherein the first knife wire is used for transmitting driving force and torque, the second knife wire is used for cutting a surgical site, the first knife wire and the second knife wire are fixedly connected to form a knife wire, and the cutting knife wire comprises:
the rigidity of the first cutter wire is greater than that of the second cutter wire, and the first cutter wire can meet the rigidity requirement required by transmission driving;
the flexibility of the second blade wire is greater than the flexibility of the first blade wire.
Preferably, in the above-described cutting wire, the first wire is a twisted wire;
the end part of the first cutter wire, which is used for connecting the second cutter wire, is a first connecting end;
the end part of the second cutter wire, which is used for connecting the first cutter wire, is a second connecting end;
and a plurality of strands in the first connecting end wrap the second connecting end and are fixedly connected with the second connecting end in a welding mode or through a connecting piece.
Preferably, in the open-cutting knife filament, the first knife filament includes a plurality of first outer layer wires and a first core wire wrapped in the plurality of first outer layer wires, and in the first connection end, the first core wire is shorter than the first outer layer wires, and the plurality of first outer layer wires constitute a plurality of strands wrapping the second connection end.
Preferably, in the above-mentioned cutting knife wire, the second knife wire is a single wire rope.
Preferably, in the above-described cutting wire, the second wire is a stranded wire including a plurality of second outer wires and a second core wire wrapped in the plurality of second outer wires, and:
in the second knife wire, the second connecting end wrapped by the first connecting end is the second core wire extending out of the second outer layer wires;
or, in the second cutter wire, the second connecting end wrapped by the first connecting end is a twisted wire end.
Preferably, in the above-described cutting wire, the second wire is a twisted wire;
the end part of the first cutter wire, which is used for connecting the second cutter wire, is a first connecting end;
the end part of the second cutter wire, which is used for connecting the first cutter wire, is a second connecting end;
and a plurality of strands in the second connecting end wrap the first connecting end and are fixedly connected with the first connecting end in a welding mode or are fixedly connected through a connecting piece.
Preferably, in the above-described slit knife filament, the second knife filament includes a plurality of second outer threads and a second core thread wrapped in the plurality of second outer threads, and in the second connection end, the second core thread is shorter than the second outer threads, and the plurality of second outer threads constitute a plurality of strands for wrapping the first connection end.
Preferably, in the above-described slitting wire, the first wire is a stranded wire including a plurality of first outer wires and a first core wire wrapped in the plurality of first outer wires, and:
in the first cutter wire, the first connecting end wrapped by the second connecting end is the first core wire extending out of the plurality of first outer layer wires;
or, in the first knife wire, the first connecting end wrapped by the second connecting end is a twisted wire end.
Preferably, in the above-described cutting wire, the connecting member is a connecting sleeve, and:
the connecting sleeve and the first cutting wire are fixedly connected in a welding mode and/or a tight fit mode and/or a mechanical extrusion mode;
the connecting sleeve and the second cutter wire are fixedly connected in a welding mode and/or a tight fit mode and/or a mechanical extrusion mode.
Preferably, in the cutting knife wire, an end of the first knife wire, which is used for connecting the second knife wire, is a first connection end, and the first connection end is sleeved in the first connection sleeve and fixedly connected with the first connection sleeve;
the end part of the second cutter wire, which is used for connecting the first cutter wire, is a second connecting end, and the second connecting end is sleeved in and fixedly connected with a second connecting sleeve;
the first connecting end and the second connecting sleeve are respectively sleeved inside two ends of the first connecting sleeve and fixedly connected with the first connecting sleeve, or the end part of the first connecting sleeve and the end part of the second connecting sleeve are fixedly connected in a welding mode.
Preferably, the twisted wire and/or the single wire rope is made of steel, iron, copper, aluminum, silver and the like.
Preferably, the welding method is soldering, silver welding or the like.
According to the technical scheme, the two wire ropes with different performance parameters are respectively used as different functional parts of the incision knife wire. Therefore, when the cutting knife wire is used in the nipple cutting knife, the rigidity requirement required by transmission driving can be met to ensure that the direction of the head end of the cutting knife can be effectively adjusted through rotating the handle, and meanwhile, the head end of the cutting knife can be made soft and flexible to improve the success of inserting the nipple.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic representation of a prior art transduodenal papillary sphincterotomy;
FIG. 2 is a schematic structural view of a teat cutting knife according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a connection structure of a cutting wire of a cutting knife according to a second embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of the front and rear end portions of the core wire with a portion of the connecting end cut away of the first blade wire according to a second embodiment of the present invention;
fig. 5 is a schematic view of a connection structure of a cutting wire of a cutting knife according to a third embodiment of the present invention;
fig. 6 is a schematic view of a connection structure of a cutting wire of a cutting knife according to a fourth embodiment of the present invention;
fig. 7 is a schematic view of a connection structure of the incision knife wires provided in the fifth embodiment and the sixth embodiment of the present invention when the incision knife wires are fixedly connected by a connection sleeve;
fig. 8 is a schematic view of a connection structure of a cutting wire of a cutting knife according to a seventh embodiment of the present invention;
fig. 9 is a schematic view of a connection structure of a cutting wire of the cutting knife according to the eighth embodiment of the present invention.
Wherein:
1-a first knife thread, 10-a first core thread, 11-a first outer layer thread,
2-a second blade filament, 20-a second core wire, 21-a second outer layer wire,
3-connecting sleeve, 31-first connecting sleeve, 32-second connecting sleeve,
a1, A2-welds.
Detailed Description
The invention discloses a cutting knife thread of a nipple cutting knife, which can meet the rigidity requirement required by transmission drive to ensure that the direction of the head end of the cutting knife can be effectively adjusted by rotating the handle of the nipple cutting knife, and can ensure that the head end of the cutting knife is flexible and flexible to improve the success of inserting nipples.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First embodiment
Referring to fig. 2, fig. 2 is a schematic structural view of a papilla incision knife according to a first embodiment of the present invention.
The first embodiment of the present invention provides a papilla cutting knife, the cutting knife wire used in the papilla cutting knife comprises a first knife wire 1 for transmitting driving force and torque and a second knife wire 2 for cutting a surgical site, the first knife wire 1 and the second knife wire 2 are fixedly connected to form a knife wire, wherein:
the rigidity of the first cutter wire 1 is greater than that of the second cutter wire 2, and the first cutter wire 1 can meet the rigidity requirement required by transmission driving, so that driving force and torque can be effectively transmitted by rotating a handle of the nipple incision knife to drive the head end of the incision knife to adjust the direction;
the flexibility of the second knife wire 2 is greater than that of the first knife wire 1, so that the end of the cutting knife is flexible and soft and has a certain pre-bending angle to facilitate the tube insertion, and the success of inserting the nipple is improved.
It can be seen that the cutting knife wire in the nipple cutting knife provided in the first embodiment of the present invention adopts two wire ropes with different performance parameters as different functional parts of the cutting knife wire, so that the cutting knife wire can meet the rigidity requirement required by the transmission drive to ensure that the direction of the head end of the cutting knife can be effectively adjusted by rotating the handle, and meanwhile, the head end of the cutting knife can be made flexible to improve the success of inserting the nipple.
Preferably, the first cutter wire 1 is a relatively thick twisted wire or a thick single wire rope with a diameter ranging from 0.46mm to 0.56mm, preferably 0.51mm, so as to be able to achieve a greater rigidity; the second blade wire 2 is a relatively thin strand or a thin single wire rope with a diameter in the range of 0.30mm to 0.38mm, preferably 0.34mm, to enable greater flexibility.
Specifically, there are various alternatives for the fastening manner between the first blade wire 1 and the second blade wire 2, which are specifically exemplified by the second embodiment to the seventh embodiment. However, the present invention is not limited to this, and those skilled in the art may also use other ways to achieve the effect of the fixed connection between the first blade wire 1 and the second blade wire 2, and the present invention is not limited to this.
For convenience of description, the end portions of the first cutter wire 1 for connecting the second cutter wire 2 are referred to as first connection ends, and the end portions of the second cutter wire 2 for connecting the first cutter wire 1 are referred to as second connection ends.
Further, it is to be noted here that:
as used herein, a "twisted wire" refers to a bundled wire rope formed by twisting (or intertwining) a plurality of wires.
As used herein, a "single wire rope" is a single wire as opposed to a stranded wire, and is of a non-stranded and bundled construction.
As used herein, "strand" refers to a single filament that is twisted together to form a strand. Herein, when the first cutter wire 1 is a twisted wire, the strand of the first cutter wire 1 includes a plurality of first outer wires 11 and a first core wire 10 (see fig. 3) wrapped in the plurality of first outer wires 11; when the second blade wire 2 is a stranded wire, the second blade wire 2 includes a plurality of second outer wires 21 and a second core wire 20 wrapped in the plurality of second outer wires 21 (see fig. 6).
Preferably, as used herein, a "strand" is a bundled steel wire rope and a "single wire rope" is a single steel wire. But not limited thereto, the material of the "stranded wire" and the "single wire rope" may be wire ropes of other materials, such as copper, aluminum, silver, etc., besides steel. The present invention is not particularly limited in this regard.
Second embodiment
Referring to fig. 3 and 4, fig. 3 is a schematic connection structure diagram of a cutting knife wire according to a second embodiment of the present invention, and fig. 4 is a schematic cross-sectional structure diagram of front and rear end portions of a core wire of a cut-off portion of a connection end of a first knife wire according to the second embodiment of the present invention.
A second embodiment of the present invention provides a cutter wire for a teat cutter provided in the first embodiment.
The first cutter wire 1 in the cutting cutter wire is a twisted wire, and the second cutter wire 2 is a single wire rope or a twisted wire. After wrapping the second connecting end of the second cutter wire 2, the plurality of strands in the first connecting end of the first cutter wire 1 are fixedly connected with the second cutter wire 2 through a welding mode, wherein the welding mode includes but is not limited to soldering, silver welding and the like, and preferably the silver welding is adopted to ensure the connecting strength.
Preferably, the first core wire 10 in the first connection end is shorter than the first outer wire 11 (see fig. 3), and the plurality of first outer wires 11 form a plurality of strands for wrapping the second connection end.
The specific processing process of the incision knife wire provided by the second specific embodiment of the invention comprises the following steps:
the first outer layer wire 11 at the end (i.e. the first connection end) of the first cutter wire 1 (diameter phi 0.51mm) which is used for transmitting torque is scattered, and the first core wire 10 positioned in the middle is cut into a certain length (for example, about 3 mm);
smoothing the scattered first outer layer wires 11, wherein the first connecting end of the first knife wire 1 cuts off part of the first core wire 10 to generate a middle gap (see fig. 4);
chamfering the end part (namely the second connecting end) of the thinner second cutter wire 2 (with the diameter phi of 0.34mm) for cutting the surgical site, and inserting the end part into the middle gap of the first connecting end, thereby achieving the primary connection effect of enabling a plurality of strands (a plurality of first outer-layer strands 11 in the position) of the first connecting end to wrap the second connecting end;
welding operation is adopted at the joint of the first connecting end and the second connecting end to ensure the connecting strength, so that the first cutter wire 1 and the second cutter wire 2 are fixedly connected to form a cutter wire which can meet different requirements of different positions.
Further, the outer diameter of the welded portion may be ground to be the same as or similar to the outer diameter of the first cutter wire 1, as required. Therefore, the tool wire can have the size which is the same as or similar to the outer diameter of the thicker tool wire on the premise of ensuring the strength of the welding connection part, and the connected tool wire can slide in the tiny cavity.
Here, it should be noted that, in the connection, the first outer layer wire 11 of the first connection end and the first core wire 10 may be spread and wrapped around the second connection end of the second blade wire 2 without cutting the first core wire 10 of the first blade wire 1. However, the present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention according to the actual needs.
Note that, if the second blade wire 2 is a twisted wire, the second connection end of the second blade wire 2 wrapped by the first blade wire 1 may be a twisted wire end composed of all of the second outer layer wire 21 and the second core wire 20, a twisted wire end composed of a part of the second outer layer wire 21 and the second core wire 20, or a twisted wire end composed of all or a part of the second outer layer wire 21. (see fig. 3 in particular)
Preferably, if the second wire 2 is a twisted wire, the second connection end of the second wire 2 may be cut according to the third embodiment described below.
Third embodiment
Referring to fig. 5, fig. 5 is a schematic view of a connection structure of a cutting wire of a cutting knife according to a third embodiment of the present invention.
The third embodiment of the present invention provides a cutting wire which is different from the second embodiment in that the second wire 2 is a stranded wire (including a plurality of second outer wires 21 and a second core wire 20), and in that the second connecting end of the second wire 2, which is wrapped and connected by the first wire 1, is the second core wire 20 extending outside the plurality of second outer wires 21.
The third specific embodiment of the present invention provides a specific processing procedure of a cutting wire of a cutting knife, including:
the first outer layer wire 11 at the end (i.e. the first connection end) of the first cutter wire 1 (diameter phi 0.51mm) which is used for transmitting torque is scattered, and the first core wire 10 positioned in the middle is cut into a certain length (for example, about 3 mm);
smoothing the scattered first outer layer wires 11, wherein the first connecting end of the first knife wire 1 cuts the first core wire 10 to generate a middle gap (see fig. 4);
spreading and cutting a second outer layer wire 21 at an end (i.e., a second connecting end) of a second thin blade wire 2 (with a diameter phi of 0.34mm) for cutting a surgical site for a certain length (e.g., about 3 mm) and then smoothing the second outer layer wire, thereby exposing a second core wire 20 with a certain length (e.g., about 3 mm);
inserting the exposed second core wire 20 into the middle gap of the first connection end, thereby achieving the primary connection effect of wrapping the plurality of strands (here, the plurality of first outer layer wires 11) of the first connection end on the second connection end;
welding operation is adopted at the joint of the first connecting end and the second connecting end to ensure the connecting strength, so that the first cutter wire 1 and the second cutter wire 2 are fixedly connected to form a cutter wire which can meet different requirements of different positions.
Further, the outer diameter of the welded portion may be ground to be the same as or similar to the outer diameter of the first cutter wire 1, as required. Therefore, the tool wire can have the size which is the same as or similar to the outer diameter of the thicker tool wire on the premise of ensuring the strength of the welding connection part, and the connected tool wire can slide in the tiny cavity.
Here, it should be noted that, in the connection, the first core wire 10 of the first cutter wire 1 may not be cut, and the first outer layer wire 11 of the first connection end and the first core wire 10 may be spread and wrapped around the second core wire 20 in which the second connection end of the second cutter wire 2 is exposed. However, the present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention according to the actual needs.
Fourth embodiment
Referring to fig. 6, fig. 6 is a schematic view of a connection structure of a cutting wire of a cutting knife according to a fourth embodiment of the present invention.
The fourth embodiment of the present invention provides a cut knife filament, in which the first knife filament 1 and the second knife filament 2 are connected in a similar manner to the second embodiment or the third embodiment, and the difference is only that the first connection end of the first knife filament 1 is wrapped and connected by the plurality of strands of the second connection end of the second knife filament 2.
Specifically, in the cutting blade wire according to the fourth embodiment of the present invention, the second blade wire 2 is a relatively thin twisted wire, and the first blade wire 1 is a relatively thick single wire rope or a relatively thick twisted wire. And after wrapping the first connection end of the first cutter wire 1, the plurality of strands in the second connection end of the second cutter wire 2 are fixedly connected with the first cutter wire 1 by welding, wherein the welding includes, but is not limited to, soldering, silver welding and the like, and preferably silver welding is used to ensure the connection strength.
Preferably, in the second connecting end of the second blade filament 2, the second core wire 20 is shorter than the second outer wire 21 (see fig. 6), and the plurality of second outer wires 21 form a plurality of strands for wrapping the first connecting end.
Specifically, if the first cutter wire 1 is a single wire rope, the first connection end of the first cutter wire may be directly wrapped and connected by the plurality of strands of the second connection end of the second cutter wire 2 after being chamfered, or directly wrapped and connected by the plurality of strands of the second connection end of the second cutter wire 2 without chamfering.
If the first cutter wire 1 is a twisted wire, the first connection end of the first cutter wire 1 wrapped by the second cutter wire 2 may be a twisted wire end composed of all the first outer layer wires 11 and the first core wire 10, may be a twisted wire end composed of a part of the first outer layer wires 11 and the first core wire 10, or may be a twisted wire end composed of all or a part of the first outer layer wires 11. Preferably, the first connecting end of the first cutter wire 1, which is wrapped by the second cutter wire 2, is a first core wire 10 extending out of the plurality of first outer wires 11 (see fig. 6).
A fourth specific embodiment of the present invention provides a specific processing procedure of a cutting wire of a cutting knife, including:
the method comprises the steps of scattering a first outer layer wire 11 at the end (namely a first connection end) of a first thicker cutter wire 1 (with the diameter phi of 0.51mm) for transmitting torque, cutting the first outer layer wire for a certain length (for example, about 3 mm), and smoothing the first outer layer wire so as to expose a first core wire 10 with a certain length (for example, about 3 mm);
the second outer layer wire 21 of the end portion (i.e., the second connection end) of the second thin blade wire 2 (diameter phi 0.34mm) for cutting the surgical site is unraveled, and the second core wire 20 located in the middle is cut by a certain length (e.g., about 3 mm);
the second outer threads 21 which are scattered are smoothed out, and at this time, the second connecting end of the second cutter wire 2 cuts off the second core wire 20, so that a middle gap is generated (see fig. 4);
inserting the first core wire 10 exposed out of the first cutter wire 1 into the middle gap of the second connecting end, thereby achieving the primary connection effect of wrapping the first connecting end by a plurality of strands (here, a plurality of second outer layer wires 21) of the second connecting end;
welding operation is adopted at the joint of the first connecting end and the second connecting end to ensure the connecting strength, so that the first cutter wire 1 and the second cutter wire 2 are fixedly connected to form a cutter wire which can meet different requirements of different positions.
Further, the outer diameter of the welded portion may be ground to be the same as or similar to the outer diameter of the first cutter wire 1, as required. Therefore, the tool wire can have the size which is the same as or similar to the outer diameter of the thicker tool wire on the premise of ensuring the strength of the welding connection part, and the connected tool wire can slide in the tiny cavity.
It should be noted here that, in the connection process, the second outer layer wire 21 of the second connection end and the second core wire 20 may be scattered together to wrap the first connection end of the first blade wire 1 without performing the cutting process on the second core wire 20 of the second blade wire 2. However, the present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention according to the actual needs.
Fifth embodiment
Referring to fig. 7, fig. 7 is a schematic view of a connection structure of the incision knife wire fixedly connected by the connection sleeve 3 according to the fifth embodiment of the present invention.
In a fifth embodiment of the invention, a first knife wire 1 in the cutting knife wire is a single thick wire rope, a second knife wire 2 is a single thin wire rope, and the first knife wire 1 and the second knife wire 2 can be fixedly connected through a connecting piece. The connection preferably uses a connection sleeve 3.
Specifically, after the first connection end of the first cutter wire 1 and the second connection end of the second cutter wire 2 are preliminarily welded, the first connection end and the second connection end are connected at the welded position through the connection sleeve 3 in a reinforcing manner. Or the first connection end of the first cutter wire 1 and the second connection end of the second cutter wire 2 are respectively and fixedly connected with the connection sleeve 3, so as to achieve the purpose of mutual connection.
Specifically, the method comprises the following steps:
the connecting sleeve 3 and the first cutting wire 1 are fixedly connected in a welding mode, a tight fit mode or a mechanical extrusion mode, or two or three fixing modes (such as tight fit, welding, tight fit and mechanical extrusion) are adopted at the same time;
the connecting sleeve 3 and the second cutter wire 2 are fixedly connected in a welding mode, a tight fit mode and a mechanical extrusion mode, or two or three of the two or three fixing modes (for example, tight fit, welding, tight fit and mechanical extrusion) are adopted at the same time.
The welding means includes, but is not limited to, soldering, silver welding, and the like.
Sixth embodiment
Referring to fig. 7, fig. 7 is a schematic view of a connection structure of the incision knife wire fixedly connected by the connection sleeve 3 according to the sixth embodiment of the present invention.
The first and second cutter wires 1 and 2 and the wrapping manner thereof in the cutter wires are the same as those in the second, third or fourth embodiments. However, after the first connecting end and the second connecting end are preliminarily connected in a wrapping mode, the first connecting end and the second connecting end are fixedly connected through the connecting piece.
In particular, the above-mentioned connecting member preferably employs a connecting sleeve 3. And:
the connecting sleeve 3 and the first cutting wire 1 are fixedly connected in a welding mode, a tight fit mode or a mechanical extrusion mode, or two or three fixing modes (such as tight fit, welding, tight fit and mechanical extrusion) are adopted at the same time;
the connecting sleeve 3 and the second cutter wire 2 are fixedly connected in a welding mode, a tight fit mode and a mechanical extrusion mode, or two or three fixing modes (such as tight fit, welding, tight fit and mechanical extrusion) are adopted at the same time;
the welding means includes, but is not limited to, soldering, silver welding, and the like.
Seventh embodiment
Referring to fig. 8, fig. 8 is a schematic view of a connection structure of a cutting wire of a cutting knife according to a seventh embodiment of the present invention.
In the incision knife wire provided in the seventh embodiment of the present invention, the first connection end of the first knife wire 1 is sleeved in the first connection sleeve 31 and is fixedly connected thereto; the second connecting end of the second cutter wire 2 is sleeved in the second connecting sleeve 32 and fixedly connected with the second connecting sleeve; the first connection end and the second connection sleeve 32 are respectively sleeved inside two ends of the first connection sleeve 31 and fixedly connected with the first connection sleeve by welding or by mechanical extrusion deformation; the welding means includes, but is not limited to, soldering, silver welding, and the like.
Eighth embodiment
Referring to fig. 9, fig. 9 is a schematic view of a connection structure of a cutting wire of a cutting knife according to an eighth embodiment of the present invention.
In the incision knife wire provided in the eighth embodiment of the present invention, the first connection end of the first knife wire 1 is sleeved in the first connection sleeve 31 and is fixedly connected thereto; the second connecting end of the second cutter wire 2 is sleeved in the second connecting sleeve 32 and fixedly connected with the second connecting sleeve; the end part of the first connecting sleeve 31 is fixedly connected with the end part of the second connecting sleeve 32 in a welding way; the welding means includes, but is not limited to, soldering, silver welding, and the like.
In summary, the incision knife wire in the above embodiments of the present invention realizes the fixed connection between two knife wires with different thickness and different purposes. Therefore, the purpose that the two cutter wires with different performance parameters are respectively used as different functional parts of the cutting cutter wire is achieved. Therefore, the incision knife thread in the duodenal papilla incision knife can meet the rigidity requirement required by transmission driving to ensure that the direction of the incision knife head end can be effectively adjusted by rotating the handle, and meanwhile, the incision knife head end can be made soft and flexible to improve the success of inserting the papilla.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a cutting knife silk, characterized in that, including first knife silk (1) that is used for transmitting driving force and moment of torsion and second knife silk (2) that are used for cutting the operation position, first knife silk (1) with second knife silk (2) link firmly and constitute a knife silk, wherein:
the rigidity of the first cutter wire (1) is greater than that of the second cutter wire (2), and the first cutter wire (1) can meet the rigidity requirement required by transmission driving;
the first cutter wire (1) is a stranded wire; the end part of the first cutter wire (1) used for connecting the second cutter wire (2) is a first connecting end; the end part of the second knife wire (2) used for connecting the first knife wire (1) is a second connecting end; a plurality of strands in the first connecting end wrap the second connecting end and are fixedly connected with the second connecting end in a welding mode or fixedly connected through a connecting piece;
the first cutter wire (1) comprises a plurality of first outer layer wires (11) and a first core wire (10) wrapped in the first outer layer wires (11), in addition, in the first connecting end, the first core wire (10) is shorter relative to the first outer layer wires (11), and the first outer layer wires (11) form a plurality of strands wrapping the second connecting end.
2. The slitting knife wire according to claim 1, characterized in that the second knife wire (2) is a single wire rope.
3. The cutting wire according to claim 1, wherein the second wire (2) is a stranded wire comprising a plurality of second outer wires (21) and a second core wire (20) wrapped within the second outer wires (21), and:
in the second knife wire (2), the second connecting end wrapped by the first connecting end is the second core wire (20) extending out of the second outer layer wire (21);
or in the second knife wire (2), the second connecting end wrapped by the first connecting end is a stranded wire end.
4. The utility model provides a cutting knife silk, characterized in that, including first knife silk (1) that is used for transmitting driving force and moment of torsion and second knife silk (2) that are used for cutting the operation position, first knife silk (1) with second knife silk (2) link firmly and constitute a knife silk, wherein:
the rigidity of the first cutter wire (1) is greater than that of the second cutter wire (2), and the first cutter wire (1) can meet the rigidity requirement required by transmission driving;
the second cutter wire (2) is a stranded wire; the end part of the first cutter wire (1) used for connecting the second cutter wire (2) is a first connecting end; the end part of the second knife wire (2) used for connecting the first knife wire (1) is a second connecting end; a plurality of strands in the second connecting end wrap the first connecting end and are fixedly connected with the first connecting end in a welding mode or fixedly connected through a connecting piece;
the second blade wire (2) comprises a plurality of second outer wires (21) and a second core wire (20) wrapped inside the second outer wires (21), and in the second connection end, the second core wire (20) is shorter than the second outer wires (21), and the second outer wires (21) constitute a plurality of strands wrapping the first connection end.
5. The cutting wire according to claim 4, wherein the first wire (1) is a stranded wire including a plurality of first outer wires (11) and a first core wire (10) wrapped in the first outer wires (11), and wherein:
in the first cutter wire (1), the first connecting end wrapped by the second connecting end is the first core wire (10) extending out of the first outer layer wires (11);
or in the first cutter wire (1), the first connecting end wrapped by the second connecting end is a stranded wire end.
6. The cutting wire according to any one of claims 1 to 5, wherein the first wire (1) and the second wire (2) are fixedly connected to form a wire by a connecting member, the connecting member is a connecting sleeve (3), and:
the connecting sleeve (3) is fixedly connected with the first cutter wire (1) in a welding mode and/or a tight fit mode and/or a mechanical extrusion mode;
the connecting sleeve (3) and the second cutter wire (2) are fixedly connected in a welding mode and/or a tight fit mode and/or a mechanical extrusion mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564109.2A CN109480962B (en) | 2018-12-20 | 2018-12-20 | Cutting wire of cutting knife |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564109.2A CN109480962B (en) | 2018-12-20 | 2018-12-20 | Cutting wire of cutting knife |
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| CN109480962B true CN109480962B (en) | 2021-07-23 |
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| CN109480962A (en) | 2019-03-19 |
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