CN209951321U - Push rod self-adaptation structure - Google Patents
Push rod self-adaptation structure Download PDFInfo
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- CN209951321U CN209951321U CN201821802710.6U CN201821802710U CN209951321U CN 209951321 U CN209951321 U CN 209951321U CN 201821802710 U CN201821802710 U CN 201821802710U CN 209951321 U CN209951321 U CN 209951321U
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- push rod
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- rod joint
- rods
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Abstract
The application relates to a push rod self-adaptation structure, including a plurality of push rods, well core rod joint and push rod joint, a plurality of push rods pass through the push rod joint is installed in well core rod connects, wherein when the mistake difference around a plurality of push rods take place, the push rod joint can compensate its mistake difference through rotary motion, makes a plurality of push rods all the time with the push rod joint contacts simultaneously. The application of the push rod self-adaptive structure is applied to rotary type instrument products, the stress of a flexible push rod in the instrument is improved, the uniform stress of a plurality of push rods in the motion process is ensured, the deformation of a single push rod is reduced, and the motion smoothness of a trigger push rod is ensured.
Description
Technical Field
The application relates to a self-adaptation structure for a rotary instrument, wherein the rotary instrument is a rotary type endoscopic cutting anastomat, and particularly relates to a push rod self-adaptation structure in the rotary type endoscopic cutting anastomat.
Background
The anastomat is a main medical device used in medicine to replace the traditional manual suture, and has the advantages of convenient use, quick suture, tight suture, moderate tightness, and few side effects and surgical complications. The head end of the rotary endoscopic cutting anastomat can rotate in an angle, and the rotary endoscopic cutting anastomat can be more flexibly applied to more anastomotic regions, and can be used for resection, crossing and anastomosis of lung, stomach and intestinal tissues under an open or endoscopic mode.
In the rotary endoscopic stapler, in order to meet the requirement of turning function, a flexible firing push rod is a necessary part, and the joint mode of the push rod in the prior rotary stapler in the industry is that a plurality of push rods are basically connected with a plane joint, as shown in fig. 1. In the rotary type anastomat, when the jaw of the anastomat is in a linear state, a plurality of push rods are simultaneously contacted with the plane joint, and the push rods simultaneously bear the thrust from the plane joint, as shown in figure 2; however, when the jaw of the anastomat rotates, as shown in fig. 1, the push rods are bent and deformed, and at the moment, due to the difference between the inner diameter and the outer diameter caused by bending, a front-back error occurs between the push rods, so that only one push rod among the plurality of push rods contacts the plane, as shown in fig. 3, only one push rod bears the thrust from the plane joint, so that the push rod bears larger deformation, the push rod is not smooth in the front-back movement process, and the challenge to the push rod is higher.
Disclosure of Invention
The technical problem that this application will be solved is to prior art not enough, provides a push rod self-adaptation structure for among rotary apparatus that has unique structural design, and the atress of flexible push rod among the rotary apparatus can be improved to this application, guarantees that multi-disc push rod can evenly atress in the motion process, reduces the deformation of monolithic push rod, guarantees the motion smoothness nature of percussion push rod.
According to the application, a push rod self-adaptation structure is provided, including a plurality of push rods, well core rod joint and push rod joint, a plurality of push rods pass through the push rod joint is installed in well core rod joint, wherein when the mistake difference around a plurality of push rods take place, the push rod joint can compensate its mistake difference through rotary motion, makes a plurality of push rods all the time with push rod joint contacts simultaneously.
Further, the push rods are 3 inner push rods and 2 outer push rods.
Further, the push rods are 2 inner push rods and 2 outer push rods,
further, the push rods are 1 piece of inner push rod and 2 pieces of outer push rods.
Furthermore, the near ends of the push rods are provided with joint mounting parts, and the push rod joints are connected with the push rods through the joint mounting parts.
Further, the push rod joint has at least a part of a cylindrical section, the center rod joint has a cylindrical cutout hole therein matching the cylindrical section of the push rod joint, a central axis of the cylindrical cutout hole is located in a vertical direction, and the push rod joint is mountable in the cylindrical cutout hole and rotatable about the central axis thereof.
Further, the joint mounting part of the push rod is a cross mounting hole positioned at the near end of the push rod.
Further, the joint mounting part of the push rod is an I-shaped mounting hole positioned at the near end of the push rod.
Further, the push rod joint is formed by cutting off a part of a cylinder, so that the push rod joint can be clamped in the ten or I-shaped mounting hole.
Specifically, the cut-out portions on the push rod joint are four portions which are symmetrical in the up-down direction and the far-near direction, and each cut-out portion is cut out in the direction which is parallel to the central axis of the cylinder but does not pass through the central axis and in the direction which is perpendicular to the central axis but does not pass through the central axis, so that the upper side and the lower side of the push rod joint are both in a knob shape and comprise a cylindrical section located in the middle area and knob sections located at the upper end and the lower end.
Further, the larger distance from the upper end to the lower end of the cross mounting hole is slightly larger than the maximum height of the push rod joint, and the larger distance from the near end to the far end of the cross mounting hole is slightly larger than the diameter of the cylinder of the center rod joint; the width of the knob section on the push rod joint is basically consistent with the smaller width from the near end to the far end in the cross hole, the push rod can generate pulling force or pushing force on the knob section when moving forwards and backwards, the force generated by each push rod is different when the push rod is bent, so that the push rod joint can freely rotate in the cylindrical cut hole in the central rod joint, and therefore when the push rods have front and back error, the push rod joint can compensate the error through rotary motion, and the push rods are in contact with the push rod joint simultaneously.
Further, the center rod adapter further comprises a first slot along its longitudinal axis, the first slot communicating with the cylindrical cutout hole, the first slot having a distal end that is open and a proximal end that is closed; the proximal end of the push rod is located at the closed proximal end of the first slot when the push rod connector is inserted into the cylindrical cutout of the center connector.
The utility model provides a push rod self-adaptation structure uses in rotary-type apparatus, has improved the atress of flexible push rod in the apparatus, guarantees that a plurality of push rods can evenly atress in the motion process, reduces the deformation of monolithic push rod, guarantees the motion smoothness nature of percussion push rod.
Further, the push rod self-adaptation structure of this application is used in rotary type chamber mirror anastomat product, has improved the atress of flexible percussion push rod in the anastomat, guarantees that a plurality of push rods can evenly be atred at the percussion in-process, reduces the deformation of monolithic push rod, guarantees the motion smoothness nature of percussion push rod.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of stapler jaw bending and assembly;
FIG. 2 is a joint form of a rotary type stapler of the prior art;
FIG. 3 is a schematic view illustrating a state where a back-and-forth misalignment occurs in a push rod of a rotary type stapler according to the prior art;
FIG. 4 is an assembly schematic of a push rod according to the present application;
FIG. 5 is a schematic structural view of the push rod of the present application in a normal state;
fig. 6 is a schematic structural diagram of the push rod in the present application when the push rod is in a front-back error.
In the figure: 1. 5: an outer push rod; 2-4: an inner push rod; 6: a push rod joint; 7: a center rod joint.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
The term "exemplary" is used herein to mean "serving as an example, instance, or illustration. Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. Also, as used herein, "proximal" and "posterior" refer to the end closer to the operator, and "distal", "distal" and "anterior" refer to the end further from the operator, with the entire device lying horizontally.
For simplicity, the instrument of the present application will be described by way of example with a rotary endoscopic cutting stapler. Those skilled in the art will appreciate that the self-adapting pusher-rod structure of the present application is not limited to rotary endoscopic cutting staplers, but is equally applicable to other rotary instruments.
The push rod adaptive structure according to the present application includes a plurality of push rods, five in fig. 4, and those skilled in the art will readily appreciate that the number of push rods is merely illustrative and can be selected as desired. In fig. 4, the five push rods are respectively provided with outer push rods 1, 5 at two sides and inner push rods 2, 3, 4 at the middle. Five push rods 1-5 are mounted in a central rod joint 7 by means of push rod joints 6. Specifically, the proximal end of the push rod 1-5 is provided with a joint mounting part, the push rod joint 6 is fixedly connected with the push rod through the joint mounting part, the push rod joint 6 at least comprises a part of a cylindrical section, the central rod joint 7 is provided with a cylindrical cut hole matched with the cylindrical section of the push rod joint 6, the central axis of the cylindrical cut hole is positioned in the vertical direction, and the push rod joint 6 can be mounted in the cylindrical cut hole and can rotate around the central axis in the cut hole.
The connector mounting part of the push rod in fig. 4 is a cross mounting hole at the proximal end of the push rod, and the push rod connector 6 is formed by cutting a part of a cylinder so that the push rod connector 6 can be caught in the cross mounting hole. The cut-out part on the push rod joint 6 is four parts which are symmetrical in the up-down direction and the far-near direction, and each cut-out part is cut out in the direction which is parallel to the central axis of the cylinder but does not pass through the central axis and in the direction which is perpendicular to the central axis but does not pass through the central axis, so that the upper side and the lower side of the push rod joint 6 are both in a knob shape, and the push rod joint specifically comprises a cylinder section positioned in the middle area and knob sections positioned at the upper end and the lower end. The larger distance from top to bottom of the cross mounting hole on the push rod is slightly larger than the maximum height of the push rod joint 6, and the larger distance from the near end to the far end of the cross mounting hole is slightly larger than the diameter of the cylinder of the central rod joint 6. The width of the knob section on the push rod joint 6 is basically consistent with the smaller width from the near end to the far end in the cross hole, the push rod can generate pulling force or pushing force on the knob section when moving forwards and backwards, the force generated by each push rod is different when the push rod is bent, so that the push rod joint 6 can freely rotate in the cylindrical cut hole in the central rod joint 7, and therefore when five push rods have front and back error, the push rod joint can compensate the error through rotary motion, and the five push rods 1-5 are in contact with the push rod joint 6 simultaneously.
It will be readily understood by those skilled in the art that the cross-shaped mounting hole at the proximal end of the push rod in the present application may be configured in other shapes, such as an i-shape, so long as the push rod connector is secured to the push rod and rotation of the push rod connector causes a back-and-forth misalignment of the push rods.
Referring to fig. 4-6, the center rod adapter 7 further comprises a first slot along its longitudinal axis, said first slot communicating with said cylindrical cutout hole, said first slot being open at its distal end and closed at its proximal end. The proximal end of the push rod is located at the closed proximal end of said first slot when the push rod adapter 6 is inserted into the cylindrical cut-out of the center adapter 7, see fig. 5, 6.
Further referring to fig. 5-6, when the center rod joint 7 moves in the direction of the arrow, the center rod joint 7 transmits the force to the push rod joint 6, and the push rod joint 6 transmits the force to the outer push rods 1, 5 and the inner push rods 2, 3, 4. When the outer push rods 1, 5 and the inner push rods 2, 3 and 4 are in a normal state, the stress surfaces of the outer push rods 1, 5 and the inner push rods 2, 3 and 4 are aligned with each other and share the acting force from the push rod joint 6, as shown in FIG. 5; when the outer push rods 1, 5 and the inner push rods 2, 3 and 4 are staggered back and forth, the push rod joint 6 can rotate in the central rod joint 7 to adapt to and compensate for the staggered difference of the 5 push rods, and at the moment, the push rod joint still contacts with the 5 push rods simultaneously, as shown in fig. 6.
The application discloses push rod self-adaptation structure uses in rotary-type chamber mirror anastomat product, has improved the atress of flexible percussion push rod in the anastomat, guarantees that a plurality of push rods can evenly atress at the percussion in-process, reduces the deformation of monolithic push rod, guarantees the motion smoothness nature of percussion push rod.
The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.
Claims (11)
1. A push rod self-adaptive structure is characterized by comprising a plurality of push rods, a central rod joint and a push rod joint, wherein the push rods are installed in the central rod joint through the push rod joint, when the push rods are subjected to front-back error, the push rod joint can compensate the error through self-adaptive motion, so that the push rods are always in contact with the push rod joint simultaneously.
2. The adaptive push rod construction of claim 1 wherein said push rod adapter is rotatable relative to said center rod adapter to compensate for said misalignment.
3. The adaptive structure of claim 2, wherein the proximal ends of the push rods are provided with joint mounting members, and the push rod joints are connected with the push rods through the joint mounting members.
4. A push rod adaptive structure according to claim 3, wherein the push rod adapter has at least a part of a cylindrical section, the center rod adapter has a cylindrical cutout hole therein matching the cylindrical section of the push rod adapter, the center axis of the cylindrical cutout hole is located in the vertical direction, and the push rod adapter is mounted in the cylindrical cutout hole and is rotatable therein about its center axis.
5. The adaptive structure of claim 4, wherein the connector mounting means of the push rod is a mounting hole located at the proximal end of the push rod.
6. The adaptive push rod structure of claim 5, wherein the push rod connector is formed by cutting a part of a cylinder so that the push rod connector can be locked in the mounting hole.
7. The adaptive push rod structure according to claim 6, wherein the cut-out portions of the push rod joint are four portions symmetrical in the up-down and near-far directions, each cut-out portion being cut out in a direction parallel to the central axis of the cylinder but not passing through the central axis and in a direction perpendicular to the central axis but not passing through the central axis, so that the upper and lower sides of the push rod joint are knob-shaped, including a cylindrical section in the middle region and knob sections at the upper and lower ends.
8. The adaptive structure of claim 7, wherein the larger distance from the top to the bottom of the mounting hole is slightly larger than the maximum height of the push rod joint, and the larger distance from the proximal end to the distal end of the mounting hole is slightly larger than the diameter of the center rod joint; the width of the knob section on the push rod joint is basically consistent with the smaller width from the near end to the far end in the mounting hole, the push rod can generate pulling force or pushing force on the knob section when moving forwards and backwards, the force generated by each push rod is different when the push rod bends, so that the push rod joint can freely rotate in the cylindrical cutting hole in the central rod joint, and therefore when the push rods have front and back error, the push rod joint can compensate the error through rotary motion, and the push rods are in contact with the push rod joint simultaneously.
9. The push rod self-adapting structure according to any one of claims 4-8, wherein said center rod adapter further comprises a first groove along its longitudinal axis, said first groove communicating with said cylindrical cut-out, said first groove being open at a distal end and closed at a proximal end; the proximal end of the push rod is located at the closed proximal end of the first slot when the push rod connector is inserted into the cylindrical cutout of the center connector.
10. The adaptive structure of claim 3-8, wherein the connector mounting means of the push rod is a cross mounting hole or an i-shaped mounting hole at the proximal end of the push rod.
11. The pusher adaptive structure according to any one of claims 3 to 8, wherein the pusher adaptive structure can be applied to a rotary endoscopic stapler product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821802710.6U CN209951321U (en) | 2018-11-02 | 2018-11-02 | Push rod self-adaptation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821802710.6U CN209951321U (en) | 2018-11-02 | 2018-11-02 | Push rod self-adaptation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209951321U true CN209951321U (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821802710.6U Active CN209951321U (en) | 2018-11-02 | 2018-11-02 | Push rod self-adaptation structure |
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| Country | Link |
|---|---|
| CN (1) | CN209951321U (en) |
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2018
- 2018-11-02 CN CN201821802710.6U patent/CN209951321U/en active Active
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