CN214965997U

CN214965997U - Auxiliary surgical instrument

Info

Publication number: CN214965997U
Application number: CN202023275898.3U
Authority: CN
Inventors: 范克顺; 杨猛; 董先公
Original assignee: Jixian Artificial Intelligence Co Ltd
Current assignee: Jixian Artificial Intelligence Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-12-03
Anticipated expiration: 2030-12-29

Abstract

The application discloses an auxiliary surgical instrument, which comprises a control unit, wherein the control unit comprises a flexible joint unit and a plurality of traction wires, and the flexible joint unit comprises a flexible pipe and a joint assembly; the joint assembly comprises a plurality of first annular joints and a plurality of second annular joints which are sleeved on the outer side of the flexible pipe at intervals, and abdicating gaps formed by two adjacent first annular joints and the second annular joints between the two adjacent first annular joints are arranged in a staggered manner in the extending direction of the flexible joint unit; each first annular joint is provided with a plurality of threading holes, and each second annular joint is provided with first limiting clamping grooves which are the same in number as the first annular joints and are matched with the threading holes in a one-to-one alignment manner; the first end of each traction wire sequentially penetrates through the threading holes in the first annular joints and is fixedly connected with the extending end of the flexible joint unit, and the first limiting clamping groove in each second annular joint is in limiting clamping connection with the penetrating traction wire. The surgical auxiliary instrument disclosed by the application has the advantages of convenience in operation, safety, reliability and the like.

Description

Auxiliary surgical instrument

Technical Field

The application belongs to the field of medical equipment, and particularly relates to an auxiliary surgical instrument.

Background

The types and the number of cases of the existing abdominal cavity operations are obviously increased, and great working pressure is brought to medical staff. Minimally invasive surgery has the advantages of small wound, light pain, quick recovery of patients and the like, and is widely applied to clinical treatment. However, in the process of implementing the minimally invasive surgery, the minimally invasive surgery must be implemented by using the assistance of some surgical auxiliary instruments, and the auxiliary instruments provide convenience for the surgical operation of doctors. During specific operation, only small openings are needed to be formed in the chest and the abdomen, the part of the surgical auxiliary instrument extends into the abdomen and is fixed, gas is blown into the abdominal cavity through the surgical auxiliary instrument by means of a pneumoperitoneum machine to form a pneumoperitoneum, then the required surgical instrument and related auxiliary units (such as an illuminating unit and an image acquisition unit) penetrate into the abdominal cavity through the surgical auxiliary instrument, and a doctor can perform laparoscopic surgery. The operation auxiliary instrument has important responsibility for adjusting the operation position and the operation angle of the operation instrument, and the reliability and the positioning accuracy of the operation auxiliary instrument play an important role in judging whether the operation is successful or not. In the practical application process, the good traction control of the flexible joint part positioned in the abdominal cavity is always a technical difficulty in the industry, and how to safely and reliably realize the control of the surgical instrument has important significance. In addition, the adjustment of the working angle of the surgical instrument has a crucial influence on the success of the minimally invasive surgery, and the flexible joint unit of the surgical auxiliary instrument can adjust the working angle of the surgical instrument.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides an operation auxiliary instrument to solve at least one technical problem in the above technical problem.

The utility model discloses the technical scheme who adopts does:

an auxiliary instrument for an operation is provided,

the flexible joint unit comprises a flexible joint unit and a plurality of traction wires, wherein the flexible joint unit comprises a flexible pipe and a joint assembly;

the joint assembly comprises a plurality of first annular joints and a plurality of second annular joints, the first annular joints and the second annular joints are sleeved on the outer side of the flexible pipe at intervals, abdicating gaps are formed between the first annular joints and the second annular joints which are adjacently arranged, and abdicating gaps formed between the two first annular joints which are adjacently arranged and the second annular joints which are arranged between the two first annular joints are arranged in a staggered manner in the extending direction of the flexible joint unit, so that the first annular joints and the second annular joints are relatively deflected in different directions; each first annular joint is provided with a plurality of threading holes arranged along the wiring direction set by the traction wire, and each second annular joint is provided with first limiting clamping grooves which are the same in number with the threading holes in the first annular joint and are matched with the threading holes in a one-to-one alignment manner;

the number of the traction wires is the same as that of the threading holes in each first annular joint, the first end of each traction wire sequentially penetrates through the threading holes in the first annular joints and is fixedly connected with the extending end of the flexible joint unit, and the first limiting clamping groove in each second annular joint is in limiting clamping connection with the penetrating traction wire;

when the flexible joint unit works, the working position of the flexible joint unit is adjusted by pulling the traction wire.

Further selectively in the length direction of the first annular joint, four first convex ridges are annularly distributed on the outer side wall of the first annular joint, and each first convex ridge is provided with one threading hole; a second limiting clamping groove which is matched with the threading hole in an opposite position is formed in at least one end of the threading hole on each first rib, each second limiting clamping groove extends along the wiring direction, and the second limiting clamping groove in each first annular joint is in limiting clamping connection with a threaded traction wire;

in the length direction of the second annular joint, four second convex edges are annularly distributed on the outer side wall of the second annular joint, and each second convex edge is provided with one first limiting clamping groove which extends along the wiring direction.

Further selectively enabling the first end of the first annular joint to be provided with an end face constructed by two first V-shaped chamfer faces formed by chamfering one group of two opposite edges towards two adjacent edges, and enabling the second end of the first annular joint to be provided with an end face constructed by two second V-shaped chamfer faces formed by chamfering the other group of two opposite edges towards two adjacent edges;

the first end of the second annular joint is provided with an end face constructed by two third V-shaped oblique cutting faces formed by beveling one group of two opposite edges towards two adjacent edges, and the second end of the second annular joint is provided with an end face constructed by two fourth V-shaped oblique cutting faces formed by beveling the other group of two opposite edges towards two adjacent edges;

a bulge of the end surface constructed by the first V-shaped chamfer of the first annular joint is abutted with a concave part of the end surface constructed by the third V-shaped chamfer of the adjacent second annular joint; a convex part of the end surface constructed by the second V-shaped chamfer of the first annular joint is abutted with a concave part of the end surface constructed by the fourth V-shaped chamfer of the adjacent second annular joint; and the first annular joint and the adjacent second annular joint are staggered along the extending direction of the flexible joint unit to form a plurality of abdicating notches.

Further selectively making the first V-shaped inclined cutting surface form a concave included angle alpha₁Is smaller than the concave included angle beta formed by the third V-shaped inclined plane₁(ii) a The second V-shaped inclined plane forms an inward concave included angle alpha₂Is smaller than the concave included angle beta formed by the fourth V-shaped inclined plane₂。

Further selectively enabling the end surface constructed by the first V-shaped oblique cutting surface and the end surface constructed by the third V-shaped oblique cutting surface to form two abdicating notches with an included angle of 15-25 degrees; the terminal surface that second V type scarf found with the terminal surface that the fourth V type scarf found forms two contained angles and is 15 ~ 25 the breach of stepping down.

And further selectively enabling four threading holes of each first annular joint to be positioned on the same section of the first annular joint, wherein one group of two threading holes which are in diagonal relationship are positioned at one end of the first annular joint, and the other group of two threading holes which are in diagonal relationship are positioned at the other end of the first annular joint.

And further selectively enabling the joint assembly to comprise N first annular joints and N second annular joints, wherein the N first annular joints and the N second annular joints are arranged on the outer side of the flexible pipe in a spaced and sleeved mode, and N is a positive integer greater than or equal to 4.

The flexible joint unit further comprises a limiting seat which is sleeved outside the first end of the flexible pipe, the limiting seat is provided with a limiting end plane, and the limiting end plane is adjacent to the third annular joint;

the third annular joint and the second annular joint have the same structural profile, and four convex edges of the third annular joint are provided with threading holes arranged along a set threading direction and limiting grooves matched with the threading holes in an alignment manner;

the surgical auxiliary instrument further comprises a guide pipe, and the first end of the flexible pipe is sleeved in the first end of the guide pipe; the guide pipe comprises a surgical instrument passageway communicated with the two ends of the guide pipe and four traction wire channels which are uniformly distributed on the pipe wall of the guide pipe and communicated with the two ends of the guide pipe, and the first end of each traction wire penetrates through one traction wire channel respectively and then extends to the flexible joint unit and is fixedly connected with the second end of the flexible pipe.

The surgical auxiliary instrument further comprises a base which comprises two first transition connecting pipes and a second transition connecting pipe, wherein a spherical hinge part is arranged at the first end of each first transition connecting pipe, and the second end of each first transition connecting pipe extends obliquely towards the first end of the second transition connecting pipe and is symmetrically arranged at two sides of the first end of the second transition connecting pipe;

the surgical auxiliary instrument comprises two manipulating units, each manipulating unit further comprises a manipulating handle, the manipulating handle of one manipulating unit is connected with the spherical hinge of one first transition connecting pipe in a spherical hinge mode, the manipulating handle of the other manipulating unit is connected with the spherical hinge of the other first transition connecting pipe in a spherical hinge mode, the second end of the catheter of each manipulating unit is connected with the second end of the first transition connecting pipe in a sleeved mode, and the first end of the catheter penetrates through the first end of the second transition connecting pipe and penetrates out of the second end of the second transition connecting pipe;

the control handle and the first transition connecting pipe are respectively provided with a surgical instrument passage, and surgical instruments can sequentially pass through the surgical instrument passages of the control handle and the first transition connecting pipe, the surgical instrument passage of the guide pipe, the flexible pipe and the second end of the flexible pipe;

the second end of each traction wire is connected with the control handle through the first transition connecting pipe, and the first end of each traction wire penetrates through the guide pipe and extends to the flexible joint unit;

when the control handle is adjusted to rotate relative to the base, the control handle adjusts the working state of the flexible joint part through the traction wire so as to adjust the working position of the surgical instrument.

The surgical auxiliary instrument further selectively comprises a position control unit of the flexible joint unit, the position control unit comprises a push-pull rod, a first connecting rod and a second connecting rod, the push-pull rod is arranged in a sliding fit with the base, the push-pull rod penetrates through the first end of the second transition connecting pipe and penetrates out of the second end of the second transition connecting pipe, a first hinge position and a second hinge position are respectively arranged on two sides of the penetrating end of the push-pull rod, the first end of the first connecting rod is hinged to the first hinge position, the second end of the first connecting rod is hinged to the limiting seat of one flexible joint unit, the first end of the second connecting rod is hinged to the second hinge position, and the second end of the second connecting rod is hinged to the limiting seat of the other flexible joint unit;

when the push-pull rod slides relative to the base, the angle between the first connecting rod and the second connecting rod is changed, so that the working positions of the two flexible joint parts are adjusted.

Through the supplementary apparatus of operation that this application provided can bring following beneficial effect:

1. the joint assembly formed by the plurality of first annular joints and the plurality of second annular joints which are sleeved at intervals is matched and cooperated with the traction line, so that the working range of the flexible joint unit is adjusted under the action of the traction line, and the function of adjusting the working angle of a surgical instrument in a limited working space is realized; according to the flexible joint unit, the first annular joint is provided with the threading hole, the second annular joint is provided with the first limiting clamping groove, the traction line is connected with the first annular joints and the second annular joint through the threading hole and the first limiting clamping groove, so that when the working angle of the flexible joint unit is adjusted, the first annular joint and the second annular joint have higher local freedom degree on the traction line, the flexible joint unit is prevented from causing local plastic bending to the traction line in the deflection process, and the controllability of the flexible joint unit and the reliability and safety of an operation auxiliary instrument can be effectively improved; in addition, the flexible joint unit can have a larger moving range and a larger moving angle in a limited operation space by increasing the number of the first annular joint and the second annular joint within a certain range.

2. This application is through set up the through wires hole on the first ring joint, and further at one side at least of through wires hole be equipped with the through wires hole counterpoint adaptation and along the spacing draw-in groove of the second that the wiring direction extended the setting, make the pull wire only need with the hole length shorter through wires hole adaptation alright with first ring switch with second ring switch forms reliable restraint, also can increase effectively the local degree of freedom of pull wire, and then can improve effectively the reliability and the security of the controllability of flexible joint unit and operation auxiliary instrument.

3. The two ends of the first annular joint are respectively provided with two first V-shaped beveled surfaces and two end surfaces constructed by the second V-shaped beveled surfaces, and the two ends of the second annular joint are respectively provided with two third V-shaped beveled surfaces and two end surfaces constructed by the fourth V-shaped beveled surfaces, so that a joint assembly formed by the plurality of first annular joints and the plurality of second annular joints has larger movement space and movement angle; in addition, the first annular joint and the second annular joint can be enabled to have excellent connectivity and controllability without the constraint of a connecting piece, and the defects that the design requirement is high, the production cost is high, the processing difficulty is high, the working freedom degree is poor, a traction line is easy to deform and break and the like caused by the fact that a plurality of annular joints are required to be integrally connected in the prior art are overcome.

4. This application is through making one the terminal surface of first annular joint and adjacent one the terminal surface of second annular joint forms two breach of stepping down, and makes two first annular joint and between it the second annular joint forms the breach of stepping down is in dislocation set in the extending direction of flexible joint unit, and then makes the operating condition's of flexible joint unit regulation has better unity.

5. This application is through making every four through wires holes of first annular joint are located first annular joint's same section department, and make a set of mutual two in diagonal relation the through wires hole is located its one end, and another group is two in diagonal relation the through wires hole is located its other end, so that the pull wire receives the distribution of the local restraint point of through wires hole is more even, unified, makes the user produce easily and forms muscle memory, helps going on smoothly of operation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a view of a surgical assistant provided in an embodiment of the present application;

FIG. 2 is an exploded view of a surgical aid provided in accordance with an embodiment of the present application;

FIG. 3 is a structural view of a flexible joint unit of the surgical assistant provided in the embodiment of the present application;

FIG. 4 is an elevation view of a flexible joint unit of a surgical assistance instrument provided in accordance with an embodiment of the present application;

FIG. 5 is a structural view of a first ring joint of a flexible joint unit provided in an embodiment of the present application;

FIG. 6 is a side view of a first ring joint of a flexible joint unit provided in an embodiment of the present application;

FIG. 7 is an elevation view of a first ring joint of a flexible joint unit provided in an embodiment of the present application;

FIG. 8 is a structural view of a second ring joint of the flexible joint unit provided in the embodiments of the present application;

FIG. 9 is a side view of a second ring joint of a flexible joint unit provided in embodiments of the present application;

FIG. 10 is a cross-sectional view of a second ring joint of a flexible joint unit provided in an embodiment of the present application;

FIG. 11 is a structural view of a third ring joint of the flexible joint unit provided in the embodiments of the present application;

FIG. 12 is a side view of a third ring joint of a flexible joint unit provided in an embodiment of the present application;

FIG. 13 is an elevation view of a third ring joint of a flexible joint unit provided in accordance with an embodiment of the present application;

FIG. 14 is a structural view of a portion of an assembly of a surgical aid provided in accordance with an embodiment of the present application;

FIG. 15 is an enlarged partial view of the structure at A of FIG. 14;

FIG. 16 is a cross-sectional view of an assembly of a handlebar and a pull wire provided in accordance with an embodiment of the present application;

fig. 17 is a cross-sectional view of an assembly of pull wires, line cards and spherical hinges as provided in accordance with an embodiment of the present application;

FIG. 18 is a cross-sectional view of a catheter of the surgical aid provided in an embodiment of the present application;

FIG. 19 is a structural view of a first transition connection tube of the surgical assistance instrument provided in accordance with an embodiment of the present application;

fig. 20 is a cross-sectional view of a first transition connection tube of the surgical assistance instrument provided in an embodiment of the present application.

Wherein, 1 flexible joint unit, 11 flexible pipe, 12 joint component, 121 first ring joint, 1211 threading hole, 1212 first rib, 1213 second limit slot, 1214 first V-shaped chamfer constructed end face, 1215 second V-shaped chamfer constructed end face, 122 second ring joint, 1221 first limit slot, 1222 second rib, 1223 third V-shaped chamfer constructed end face, 1224 fourth V-shaped chamfer constructed end face, 123 third ring joint, 13 limit seat, 131 limit end plane,

2 traction wires, 21 spherical articulated bodies, 211 drift diameter shaft holes, 212 limit grooves, 22 line cards, 221 limit parts,

3, a catheter, 31 a traction wire channel,

4 base, 41 first transition connecting pipe, 411 spherical hinge part, 412 airflow access channel, 413 wire through hole, 42 second transition connecting pipe, 43 first shell, 44 second shell,

5 operation handle, 51 first limit structure, 511 pull wire through hole, 52 second limit structure, 53 spherical hinge joint position,

6 position control unit of flexible joint unit, 61 push-pull rod, 611 first hinge position, 612 second hinge position, 62 first link, 63 second link,

7, a gap of the abdication is formed,

8 surgical instrument passageways.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the description of the present application, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, references to the description of the terms "an aspect," "some aspects," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

In the present application, the number is included in a certain number or more, and two or more, for example.

For convenience of description, the terms "front", "rear", "left", "right", "up" and "down" will be used with respect to the user when the surgical aid is in use.

The surgical assistant apparatus as shown in fig. 1 to 20, comprising a manipulation unit including a flexible joint unit 1 and a plurality of traction wires 2, the flexible joint unit 1 including a flexible tube 11 and a joint assembly 12; the joint assembly 12 comprises a plurality of first annular joints 121 and a plurality of second annular joints 122, the plurality of first annular joints 121 and the plurality of second annular joints 122 are arranged on the outer side of the flexible pipe 11 in a spaced and sleeved mode, yielding notches 7 are formed between the first annular joints 121 and the second annular joints 122 which are arranged adjacently, and the yielding notches 7 formed by the two first annular joints 121 and the second annular joints 122 which are arranged adjacently are arranged in a staggered mode in the extending direction of the flexible joint unit 1, so that the first annular joints 121 and the second annular joints 122 can deflect relatively in different directions; each first annular joint 121 is provided with a plurality of threading holes 1211 arranged along the wiring direction set by the traction wire 2, and each second annular joint 122 is provided with first limiting clamping grooves 1221 which are the same in number as the threading holes 1121 on the first annular joint 121 and are matched with the threading holes 1211 in a one-to-one alignment manner; the number of the traction wires 2 is the same as that of the threading holes 1211 on each first annular joint 121, the first end of each traction wire 2 sequentially passes through the threading holes 1211 on the first annular joints 121 and is fixedly connected with the outward extending end of the flexible joint unit 1, and the first limit clamping groove 1221 on each second annular joint 122 is in limit clamping connection with the traction wire 2 passing through; in operation, the working position of the flexible joint unit 1 is adjusted by pulling the traction wire 2. The surgical aid according to the present invention is preferably used for a surgical operation such as a laparoscopic operation or a thoracic operation. In addition, the number of the manipulation units included in the surgical assistance device of the present application is not particularly limited, and may be selectively set according to actual needs, but it is preferable that the surgical assistance device includes two manipulation units. In addition, the number of the traction wires 2 is not particularly limited, but it is preferable that the number of the traction wires 2 included in each manipulation unit is set to four. The joint assembly 12 formed by the plurality of first annular joints 121 and the plurality of second annular joints 122 which are arranged at intervals in the control unit is matched with the traction wire 2, so that the working range of the flexible joint unit 1 is adjusted under the action of the traction wire 2, and the function of adjusting the working angle of a surgical instrument in a limited working space is realized; according to the flexible joint unit, the first annular joint 121 is provided with the threading hole 1211, the second annular joint 122 is provided with the first limiting clamping groove 1221, and the traction wire 2 is connected with the first annular joints 121 and the second annular joints 122 through the threading hole 1211 and the first limiting clamping groove 1221, so that when the traction wire 2 is used for adjusting the working angle of the flexible joint unit 1, the first annular joints 121 and the second annular joints 122 have higher local freedom degrees on the traction wire 2, the flexible joint unit 1 is prevented from causing local plastic bending to the traction wire 2 in the deflection process, and the controllability of the flexible joint unit 1 and the reliability of an auxiliary surgical instrument can be effectively improved; in addition, the present application can increase the number of the first annular joint 121 and the second annular joint 122 within a certain range, so that the flexible joint unit 1 has a larger range of motion and a larger angle of motion in a limited operation space.

As a preferred embodiment of the present application, when embodied, as shown in fig. 1 and fig. 2, the surgical auxiliary device further comprises a guide tube 3, and the first end of the flexible tube 11 is sleeved in the first end of the guide tube 3; as shown in fig. 18, each of the guide tubes 3 includes a surgical instrument passageway 8 communicating with both ends of the guide tube 3, and four pull wire channels 31 uniformly distributed on the tube wall of the guide tube 3 and communicating with both ends of the guide tube 3, and a first end of each of the pull wires 2 respectively passes through one of the pull wire channels 31 and then extends to the flexible joint unit 1 and is fixedly connected with a second end of the flexible tube 11; and the surgical auxiliary instrument further comprises a base 4, as shown in fig. 1 and 2, the base 4 comprises two first transition connecting pipes 41 and one second transition connecting pipe 42, a first end of each first transition connecting pipe 41 is provided with a spherical hinge 411, and a second end of each first transition connecting pipe 41 extends obliquely towards the first end of the second transition connecting pipe 42 and is symmetrically arranged at two sides of the first end of the second transition connecting pipe 42; the surgical auxiliary instrument comprises two manipulating units, each manipulating unit further comprises a manipulating handle 5, the manipulating handle 5 of one manipulating unit is in spherical hinge connection with the spherical hinge 411 of one first transition connecting pipe 41, the manipulating handle 5 of the other manipulating unit is in spherical hinge connection with the spherical hinge 411 of the other first transition connecting pipe 41, the second end of the catheter 3 of each manipulating unit is in sleeved connection with the second end of the first transition connecting pipe 41, and the first ends of the catheter 3 of each manipulating unit penetrate through the first end of the second transition connecting pipe 42 and penetrate out the second end of the second transition connecting pipe; the control handle 5 and the first transition connecting pipe 41 are both provided with a surgical instrument passage 8, and surgical instruments can sequentially pass through the surgical instrument passages 8 of the control handle 5 and the first transition connecting pipe 41, the surgical instrument passages 8 of the guide pipe 3, the flexible pipe 11 and the second end of the flexible pipe 11; a second end of each traction wire 2 is connected with the control handle 5 through the first transition connecting pipe 41, and a first end of each traction wire 2 passes through the guide pipe 3 and extends to the flexible joint unit 1; when the control handle 5 is adjusted to rotate relative to the base 4, the control handle 5 adjusts the working state of the flexible joint part through the traction wire 2 so as to adjust the working position of the surgical instrument. As shown in fig. 19 and 20, the first transition connecting tube 41 is further selectively contracted from a first end to a second end, and four wire passing holes 413 are uniformly distributed on a side wall of the second end, the second end of the guide tube 3 is communicated with the second end of the first transition connecting tube 41, and a first end of each of the traction wires 2 passes through the wire passing hole 413, the traction wire channel 31 and the flexible joint unit 1 which are oppositely arranged, and is fixedly connected with the extending end of the flexible joint unit.

In specific implementation, the present application may further selectively enable the control unit to further include a transition joint pipe, a first end of the transition joint pipe is sleeved in a second end of the first transition connection pipe 41 and extends to a position where the wire passing hole 413 is blocked, and a second end of the transition joint pipe is hermetically sealed and installed inside the second end of the conduit; and an airflow access channel 412 is further formed in the side wall of the first transition connecting pipe 41, and the airflow access channel 412 is sequentially communicated with the guide pipe through the transition joint pipe, so that airflow can flow through the transition joint pipe and the guide pipe and flow out from the extending end of the flexible joint unit. This application is through making the unit of controlling still includes the transition joint pipe, and makes the second end of first transition connection pipe is located to a pot head of transition joint pipe and extends to with cross the position of line hole shutoff, just the second end seal cover of transition joint pipe adorn in the first end of pipe is inboard, adopts this kind of setting form, and the interlude of the pull wire 2 of not only being convenient for can satisfy moreover that the pneumoperitoneum machine is in through setting up the air current access passageway 412 of first transition connection pipe lateral wall the sealed requirement of the body is supplied to abdominal cavity inside to the pipe.

As a preferred example in this embodiment, in specific implementation, one end of the conduit 3 is further selectively located in the base 4 and fixedly connected to the base 4, and the other end of the conduit 3 penetrates out of the base 4 and is sleeved with the first end of the flexible tube 11; the one end of control handle 5 with 4 universal connections of base, every the second end of pull wire 2 has set firmly spherical articulated body 21, on the control handle 5 in the periphery of universal junction be equipped with the articulated seat of spherical articulated body 21 looks adaptation, every the first end of pull wire 2 passes through spherical articulated body 21 and one articulated seat is articulated to be connected, every the first end of pull wire 2 is worn in proper order through the base 4 the pipe 3 joint subassembly 12 and with the overhanging end of flexible joint unit 1 links firmly. In specific implementation, as shown in fig. 16, a spherical hinge 53 may be further selectively disposed in the middle of the connection end of the control handle 5 and the base 4, four hinge seats are annularly and uniformly distributed at the end of the control handle 5 on the periphery of the spherical hinge 53, and the second ends of the four traction wires 2 are respectively connected to one hinge seat through one spherical hinge body 21 in a hinged manner. For implementation, the connection end of the handlebar 5 and the base 4 can further selectively include a first limiting structure 51 and a second limiting structure 52 in fit connection with the first limiting structure 51, the first limiting structure 51 and the second limiting structure 52 are connected and form the spherical hinge position 53 and four hinge seats uniformly distributed on the periphery of the spherical hinge position 53; the position, facing the hinged seat, of the second limiting structure 52 is provided with a pull line via hole 511 communicated with the hinged seat, and the pull line via hole 511 is arranged along the direction in which the pull line 2 penetrates out in a gradually expanding manner, so that the pull line 2 is prevented from being constrained by the operating handle 5 in the pulling process.

In specific implementation, the present application may further selectively enable the base 4 to further include a first shell 43 and a second shell 44 matched with the first shell 43, where the first shell 43 and the second shell 44 are buckled and form a V-shaped shell, a second end of each first transition connecting pipe 41 is located in the V-shaped shell and is matched and fixedly connected with the V-shaped shell, the two first transition connecting pipes 41 are symmetrically arranged, and a first end of each second transition connecting pipe 42 is fixedly connected with the V-shaped shell; two duct limiting channels are arranged in the V-shaped shell, and the first end of each duct 3 is connected with the second end of the first transition connecting pipe 41 and penetrates into the first end of the second transition connecting pipe 42 through the duct 3 limiting channels. Further, the first transition connection pipe 41 and the second transition connection pipe 42 are more firmly fixed, and the surgical auxiliary instrument is more beautiful.

As a preferred embodiment of the present application, in a specific implementation, as shown in fig. 5 to 7, optionally, in a length direction of the first annular joint 121, four first protruding ribs 1212 are disposed on an outer side wall of the first annular joint 121, and each first protruding rib 1212 is provided with one threading hole 1211; on each first rib 1212, one end of the threading hole 1211 is provided with a second limiting slot 1213 aligned and matched with the threading hole 1211, each second limiting slot 1213 extends along the wiring direction, and the second limiting slot 1213 on each first ring joint 121 is in limiting and clamping connection with the passing traction wire 2; as shown in fig. 8 to 10, four second protruding ribs 1222 are distributed on the outer side wall of the second annular joint 122 in the length direction of the second annular joint 122, one first limiting groove 1221 is provided on each second protruding rib 1222, and the first limiting groove 1221 extends along the wiring direction. As a changeable implementation manner, in a specific implementation, two ends of the threading hole 1211 can be selectively provided with a second limiting slot 1213 which is aligned and matched with the threading hole 1211; the length of the threading hole 1211 on each first rib 1212 is further selectively smaller than the length of the second limiting groove 1213, and the length of the threading hole 1211 is preferably between one tenth and one third of the total length of the first rib 1212. In addition, in specific implementation, the first limiting slot 1221 and/or the second limiting slot 1213 may be a limiting slot gradually expanding from the slot bottom to the slot opening. This application is through set up through wires hole 1211 on the first ring joint 121, and further at least one side of through wires hole 1211 be equipped with through wires hole 1211 counterpoint adaptation and along the spacing draw-in groove 1213 of second that the wiring direction extended the setting, make pull wire 2 only need with the short through wires hole 1211 adaptation of hole length can with first annular switch with second annular switch forms reliable restraint, also can increase effectively the local degree of freedom of pull wire 2, and then can improve effectively the reliability of the controllability of flexible joint unit 1 and the supplementary apparatus of operation.

As a preferred example in this embodiment, the present application may further selectively enable the first end of the first annular joint 121 to have an end face 1214 formed by two first V-shaped chamfered faces formed by chamfering one set of two opposite edges towards two adjacent edges, and the second end of the first annular joint 121 to have an end face 1215 formed by two second V-shaped chamfered faces formed by chamfering one set of two opposite edges towards two adjacent edges; the first end of the second annular joint 122 has an end face 1223 constructed by two third V-shaped chamfered faces formed by chamfering one set of two opposite edges towards two adjacent edges, and the second end of the second annular joint 122 has an end face 1224 constructed by two fourth V-shaped chamfered faces formed by chamfering the other set of two opposite edges towards two adjacent edges; the bulge of the end face 1214 formed by the first V-shaped chamfer of the first annular joint 121 abuts against the concave part of the end face 1223 formed by the third V-shaped chamfer of the adjacent second annular joint 122 and can rotate relative to the traction line 2 under the traction force; the convex part of the end surface 1215 of the second V-shaped chamfer of the first annular joint 121 abuts against the concave part of the end surface 1224 of the fourth V-shaped chamfer of the adjacent second annular joint 122 and is pulled by the traction wire 2 to rotate relatively; so that the first annular joint 121 and the adjacent second annular joint 122 are dislocated along the extending direction of the flexible joint unit 1 to form a plurality of the abdicating notches 7. In practice, it is preferable to make the end surface 1214 of the first V-shaped chamfer construction identical to the end surface 1215 of the second V-shaped chamfer construction but diagonally positioned to improve the interchangeability of the first ring joint 121; likewise, it is further preferable that the third V-chamfered surface constructed end surface 1223 and the fourth V-chamfered surface constructed end surface 1224 are identical but are diagonally arranged to improve the interchangeability of the second annular joint 122. In practice, the first step can be further selectively carried outA V-shaped inclined plane forming an inward concave included angle alpha₁Is smaller than the concave included angle beta formed by the third V-shaped inclined plane₁(ii) a The second V-shaped inclined plane forms an inward concave included angle alpha₂Is smaller than the concave included angle beta formed by the fourth V-shaped inclined plane₂(ii) a Preferably such that said angle alpha is₁Equal to the included angle alpha₂And the angle of inclination beta₁Equal to the included angle beta₂. In this embodiment, as shown in FIG. 4, it is further preferable that the end face 1214 of the first V-shaped chamfer construct and the end face 1223 of the third V-shaped chamfer construct form two included angles γ₁The abdication gap 7 is 15-25 degrees; and the end surface 1215 of the second V-chamfered construction forms two included angles gamma with the end surface 1224 of the fourth V-chamfered construction₂The abdication gap 7 is 15-25 degrees; and further selectively selecting the included angle gamma₁Equal to the included angle gamma₂And are equal to 16 °, 17 °, 18 °, 18.5 °, 19 °, 20 °, 20.5 °,21 °, 21.5 °, 22 °, 23 °, 24 ° or 25 °, preferably with an angle γ₁Equal to the included angle gamma₂And take an angle in the range of 20 ° ± 3 °, for example, making the included angle γ₁And an included angle gamma₂Equal to 20.5. The present application makes the joint assembly 12 formed by a plurality of the first ring joints 121 and a plurality of the second ring joints 122 have a larger movement space and a larger movement angle by forming both ends of the first ring joint 121 with an end surface formed by two of the first V-shaped chamfers and an end surface formed by two of the second V-shaped chamfers, and forming both ends of the second ring joint 122 with an end surface formed by two of the third V-shaped chamfers and an end surface 1224 formed by the fourth V-shaped chamfers, respectively; in addition, the flexible joint unit 1 can have excellent manipulation performance without the constraint of a connecting member between the first annular joint 121 and the second annular joint 122, and the defects of high design requirement, high production cost, high processing difficulty, poor working freedom and the like caused by the conventional need of integrally connecting a plurality of annular joints are avoided. In addition, the present application provides for the end surface of one of the first ring joints 121 to abut one of the second ring jointsThe terminal surface of annular joint 122 forms two breach 7 of stepping down to make two first annular joint 121 and between it second annular joint 122 forms notch 7 of stepping down is in dislocation set in flexible joint unit 1's the extending direction, and then makes flexible joint unit 1's operating condition's regulation has better continuity and unity.

As a preferred example in this embodiment, the four threading holes 1211 of each first annular joint 121 are further selectively located on the same cross section of the first annular joint 121 or near two sides thereof, one group of two threading holes 1211 located diagonally to each other is located at one end of the first annular joint 121, and the other group of two threading holes 1211 located diagonally to each other is located at the other end of the first annular joint 121. This application is through making every four through wires holes 1211 of first ring joint 121 are located same section department of first ring joint 121, and make a set of two each other diagonal relation the through wires hole 1211 is located its one end, another set of two each other diagonal relation the through wires hole 1211 is located its other end, so that pull wire 2 receives the distribution of the local tie point of through wires hole 1211 is more even, unified, makes the user produce easily and forms muscle memory, helps going on smoothly of operation.

In this application, in a specific implementation, the joint assembly 12 may selectively include N first annular joints 121 and N second annular joints 122, where the N first annular joints 121 and the N second annular joints 122 are disposed on the outer side of the flexible tube 11 in a spaced manner, where N is a positive integer greater than or equal to 4. In particular implementation, said N is preferably set to a positive integer from 4 to 10, preferably to 5, 6 or 7.

When the flexible joint unit 1 is implemented specifically, the flexible joint unit 1 may further selectively include a limiting seat 13, the limiting seat 13 is sleeved outside the first end of the flexible pipe 11, the limiting seat 13 has a limiting end plane 131, and the limiting end plane 131 is adjacent to the third annular joint 123; as shown in fig. 11 to 13, the third annular joint 123 and the second annular joint 122 have the same structural profile, and four ribs of the third annular joint 123 are respectively provided with a threading hole 1211 arranged along a set threading direction and a limiting groove aligned and matched with the threading hole on the threading hole.

As a preferred embodiment of the present application, when implemented, the surgical auxiliary instrument may further selectively include a position control unit 6 of the flexible joint unit, the position control unit comprises a push-pull rod 61, a first connecting rod 62 and a second connecting rod 63, the push-pull rod 61 is arranged in a sliding fit with the base 4, the push-pull rod 61 penetrates through the first end of the second transition connecting pipe 42 and penetrates out of the second end thereof, a first hinge location 611 and a second hinge location 612 are respectively arranged at two sides of the penetrating end of the push-pull rod 61, the first end of the first link 62 is hinged to the first hinge position 611, the second end of the first link 62 is hinged to the limit seat 13 of one of the flexible joint units 1, the first end of the second connecting rod 63 is hinged to the second hinge position 612, and the second end of the second connecting rod 63 is hinged to the limiting seat 13 of another flexible joint unit 1; when the push-pull rod 61 slides relative to the base 4, the angle between the first link 62 and the second link 63 changes, so as to adjust the working positions of the two flexible joints.

In the specific implementation of the present application, the traction wire 2 can be further selectively set as a traction steel wire, as shown in fig. 17, a drift diameter shaft hole 211 is arranged on the spherical hinge body 21, and the second end of the traction wire 2 is fixedly connected with the spherical hinge body 21 through a line card 22 adapted to the drift diameter shaft hole 211; the wire clamp 22 is provided with a threading hole in the length direction, and the second end of the pull wire 2 penetrates through the threading hole, so that the wire clamp 22 deforms and forms a locking state with a set pre-tightening force with the second end of the pull wire 2; one end of the line card 22 is provided with a limiting part 221, one end of the drift diameter shaft hole 211 is provided with a limiting groove 212 matched with the limiting part 221, the line card 22 penetrates through the drift diameter shaft hole 211 and is in locking connection with the spherical hinge body 21 through the limiting part 221 and the limiting groove 212, and the other end of the line card 22 penetrates through the drift diameter shaft hole 211 and extends to a set length; when the critical state of plastic deformation of the traction wire 2 occurs, the second end of the traction wire 2 and the line card 22 slide relatively. In particular, the traction steel wire is preferably made of stainless steel material, or a rust-proof coating is plated on the traction steel wire; in addition, the line cards 22 may optionally be made of stainless steel. The traction wire 2 is set as the traction steel wire, so that the traction wire 2 occupies less space under the condition of ensuring the required traction force; besides, this application is through set up latus rectum shaft hole 211 on the spherical articulated body 21, and make the second end of pull wire 2 through ply-yarn drill 22 with latus rectum shaft hole 211 locking is connected, and then makes it is more scientific to be connected between spherical articulated body 21 and the pull wire 2. According to the spherical hinge body 21, the other end of the line card penetrates out of the drift diameter shaft hole 211 and extends to a set length, so that the bearing capacity of the joint of the traction line 2 and the spherical hinge body 21 can be effectively improved, and the traction line 2 at the joint can be effectively protected; in addition, this application is through making the ply-yarn drill 22 takes place to deform and forms the locking state that has the settlement pretightning force with the second end of pull wire 2, and then works as when pull wire 2 takes place plastic deformation's critical state, so that pull wire 2's second end with ply-yarn drill 22 takes place relative slip, avoids causing medical accident because 2 fracture of pull wire, provides the powerful guarantee for the safe handling of operation auxiliary instrument.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An auxiliary surgical instrument is characterized in that,

2. A surgical assistant according to claim 1,

in the length direction of the first annular joint, four first convex edges are annularly distributed on the outer side wall of the first annular joint, and each first convex edge is provided with one threading hole; a second limiting clamping groove which is matched with the threading hole in an opposite position is formed in at least one end of the threading hole on each first rib, each second limiting clamping groove extends along the wiring direction, and the second limiting clamping groove in each first annular joint is in limiting clamping connection with a threaded traction wire;

3. A surgical assistant according to claim 2,

the first end of the first annular joint is provided with an end face constructed by two first V-shaped oblique cutting faces formed by beveling one group of two opposite edges towards two adjacent edges, and the second end of the first annular joint is provided with an end face constructed by two second V-shaped oblique cutting faces formed by beveling the other group of two opposite edges towards two adjacent edges;

4. A surgical assistant according to claim 3,

the first V-shaped inclined plane forms an inward concave included angle alpha₁Is smaller than the concave included angle beta formed by the third V-shaped inclined plane₁(ii) a The second V-shaped inclined plane forms an inward concave included angle alpha₂Is smaller than the concave included angle beta formed by the fourth V-shaped inclined plane₂。

5. A surgical assistant according to claim 4,

the end surface constructed by the first V-shaped oblique cutting surface and the end surface constructed by the third V-shaped oblique cutting surface form two abdicating notches with an included angle of 15-25 degrees; the terminal surface that second V type scarf found with the terminal surface that the fourth V type scarf found forms two contained angles and is 15 ~ 25 the breach of stepping down.

6. A surgical assistant according to claim 5,

the four threading holes of each first annular joint are positioned on the same section of the first annular joint, one group of two threading holes which are in diagonal relation are positioned at one end of the first annular joint, and the other group of two threading holes which are in diagonal relation are positioned at the other end of the first annular joint.

7. A surgical assistant according to claim 6,

the joint assembly comprises N first annular joints and N second annular joints, the N first annular joints and the N second annular joints are arranged on the outer side of the flexible pipe in a spaced and sleeved mode, and N is a positive integer larger than or equal to 4.

8. A surgical aid according to any one of claims 2 to 7,

the flexible joint unit further comprises a limiting seat, the limiting seat is sleeved outside the first end of the flexible pipe, the limiting seat is provided with a limiting end plane, and the limiting end plane is adjacent to the third annular joint;

9. A surgical assistant according to claim 8,

the surgical auxiliary instrument further comprises a base, wherein the base comprises two first transition connecting pipes and one second transition connecting pipe, a spherical hinge part is arranged at the first end of each first transition connecting pipe, and the second end of each first transition connecting pipe extends obliquely towards the first end of the second transition connecting pipe and is symmetrically arranged at two sides of the first end of the second transition connecting pipe;

10. A surgical assistant according to claim 9,

the surgical auxiliary instrument further comprises a position control unit of the flexible joint unit, the position control unit comprises a push-pull rod, a first connecting rod and a second connecting rod, the push-pull rod is arranged in a sliding fit with the base, the push-pull rod penetrates through the first end of the second transition connecting pipe and penetrates out of the second end of the second transition connecting pipe, a first hinge position and a second hinge position are respectively arranged on two sides of the penetrating end of the push-pull rod, the first end of the first connecting rod is hinged to the first hinge position, the second end of the first connecting rod is hinged to the limiting seat of one flexible joint unit, the first end of the second connecting rod is hinged to the second hinge position, and the second end of the second connecting rod is hinged to the limiting seat of the other flexible joint unit;