CN113796915B - Cam control mechanism of repeating clip applier - Google Patents
Cam control mechanism of repeating clip applier Download PDFInfo
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- CN113796915B CN113796915B CN202111375725.5A CN202111375725A CN113796915B CN 113796915 B CN113796915 B CN 113796915B CN 202111375725 A CN202111375725 A CN 202111375725A CN 113796915 B CN113796915 B CN 113796915B
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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
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/128—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips
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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
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
Abstract
The invention belongs to the technical field of medical instruments, and particularly relates to a cam control mechanism of a repeating clip applier. The invention provides a cam control mechanism of a continuous shooting clip, aiming at the problem that the uniform speed propelling mode adopted by the clip applying mechanism in the prior art cannot be well matched with the two-step clamping action, the cam control mechanism comprises a tissue clip propelling structure and a driving handle, wherein a special-shaped cam is arranged on one side of the driving handle, a special-shaped groove is arranged on the special-shaped cam, the special-shaped groove consists of a plurality of arc sections with different distances from the rotating centers of the special-shaped cam, and a transmission assembly is arranged between the special-shaped cam and the tissue clip propelling structure. The special-shaped cam is provided with the special-shaped groove, and the special-shaped groove is composed of a plurality of arc sections with different distances from the rotating center of the special-shaped cam, so that the tissue clamp propelling structure can obtain different propelling speeds in the process of uniform driving of the driving handle, and the tissue clamp propelling structure can be better suitable for the action of clamping the forceps head step by step.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a cam control mechanism of a repeating clip applier.
Background
Clip applier is a surgical instrument used to apply a clipping operation to a clip of tissue during a surgical procedure. The tissue clips are typically made of a metallic material, such as titanium clips, or other materials, such as plastic clips. When the tissue clamp is used for clamping, the tissue clamp needs to be pushed out of the clamping forceps firstly, and then the tissue clamp is closed by using the forceps head so as to realize clamping. However, some tissue clips, such as tissue clips made of plastic materials, have a large-scale automatic flicking action when being ejected to the position of the clip applier head, which brings inconvenience to the medical staff during the operation.
Therefore, the inventor tries to solve the problem by adopting a step-by-step feeding mode. The first feeding mechanism finishes the first step to clamp the forceps head to a certain opening degree, so that the amplitude of the automatic bouncing action of the tissue clamp can be effectively reduced when the tissue clamp is pushed out, and then the second feeding mechanism is utilized to slowly clamp the forceps head to be completely closed. But the problem that comes with is how to control the timing of the tissue clip ejection. If the uniform-speed propelling mode adopted by the clip applier in the prior art is adopted, the action of the clip applier can not be matched with the action of the two-step clamping. The application action of the clamp applying forceps head and the pushing action of the tissue clamp are controlled by two sets of mechanisms respectively, so that the product structure becomes very complicated, and the operation is inconvenient.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to provide a cam control mechanism for a continuous hair clip applier which is suitable for a stepwise gripping operation of a clip.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a cam control mechanism of pincers is executed in running hair, presss from both sides advancing structure including the tissue that is used for promoting the tissue to press from both sides, still includes driving handle, one side of driving handle is equipped with the dysmorphism cam of being connected with the driving handle drive, be equipped with special-shaped groove on the dysmorphism cam, special-shaped groove comprises the arc section that a plurality of sections and the rotation center distance of special-shaped cam are inequality, be equipped with drive assembly between special-shaped cam and the tissue presss from both sides advancing structure, drive assembly one end sliding connection is in special-shaped groove, and the other end rotates to be connected and presss from both sides advancing structurally in the tissue.
In the cam control mechanism of the continuous emission clip applier, the special-shaped groove comprises a first arc section, a second arc section and a third arc section which are sequentially communicated;
the radian of the projection of the first arc section on the arc of the circle taking the rotation center of the special-shaped cam as the center of circle is 20-40 degrees, and the difference of the projection distances of the two ends of the first arc section in the radial direction of the circle taking the rotation center of the special-shaped cam as the center of circle is less than 10 mm;
the radian of the projection of the second arc section on the arc of the circle taking the rotation center of the special-shaped cam as the center of circle is 10-30 degrees, and the difference of the projection distances of the two ends of the second arc section in the radial direction of the circle taking the rotation center of the special-shaped cam as the center of circle is less than 20 mm;
the projection radian of the third arc section on the arc of the circle taking the rotation center of the special-shaped cam as the center of circle is 30-50 degrees, and the difference of the projection distances of the two ends of the third arc section in the radial direction of the circle taking the rotation center of the special-shaped cam as the center of circle is less than 10 mm.
In the cam control mechanism of the repeating clip applier, a projection radian of the first arc section on an arc of a circle with the rotation center of the special-shaped cam as a center of circle is 30 degrees, and a difference between projection distances of two ends of the first arc section in a radial direction of the circle with the rotation center of the special-shaped cam as the center of circle is 0.75 mm;
the radian of the projection of the second arc section on the arc of the circle taking the rotation center of the special-shaped cam as the center of circle is 20 degrees, and the difference of the projection distances of the two ends of the second arc section in the radial direction of the circle taking the rotation center of the special-shaped cam as the center of circle is 3.75 mm;
the projection radian of the third arc section on the arc of the circle taking the rotation center of the special-shaped cam as the center of circle is 40 degrees, and the difference of the projection distances of the two ends of the third arc section in the radial direction of the circle taking the rotation center of the special-shaped cam as the center of circle is 0.25 mm.
In the cam control mechanism of the repeating clip applier, the special-shaped cam comprises a cam main body and a rotating connecting hole arranged on the cam main body, a transmission gear is arranged on one side, away from the special-shaped groove, of the cam main body, and the cam main body is in driving connection with the driving handle through the transmission gear.
In the cam control mechanism of the continuous emission clip applier, one side of the driving handle, which is close to the special-shaped cam, is provided with driving teeth, a gear is arranged between the driving teeth and the transmission teeth, and two sides of the gear are respectively meshed with the driving teeth and the transmission teeth.
The cam control mechanism of the continuous emission clip applier further comprises a pushing structure used for pushing the clip head push rod to drive the clip head to open or clamp, a first feeding mechanism and a second feeding mechanism are further arranged between the driving handle and the pushing structure, the driving handle pushes the pushing structure to enter the first feeding space through the first feeding mechanism, and the driving handle pushes the pushing structure to enter the second feeding space through the second feeding mechanism.
In the cam control mechanism of the repeating clip applier, the first feeding mechanism is located at the front end of the second feeding mechanism, the driving handle is rotated, and the first feeding mechanism pushes the pushing structure before the second feeding mechanism.
In the cam control mechanism of the repeating clip applier, when the first feeding mechanism pushes the pushing structure, the rotating angle of the driving handle is 0-14 degrees, and when the second feeding mechanism pushes the pushing structure, the rotating angle of the driving handle is 25-41 degrees.
In the cam control mechanism of the continuous shooting clip applier, when the driving handle rotates by an angle of 15 degrees, the first feeding mechanism completes pushing of the pushing structure, and when the driving handle rotates by an angle of 42 degrees, the second feeding mechanism completes pushing of the pushing structure.
In the cam control mechanism of the continuous hair clip applier, the transmission assembly comprises a first transmission piece and a second transmission piece, a first pin shaft and a second pin shaft are fixedly arranged on the first transmission piece, a guide through hole penetrating through the first transmission piece is further formed in the first transmission piece, one end of the second transmission piece is rotatably connected with the first transmission piece, the other end of the second transmission piece is rotatably connected with the tissue clip propelling structure, a third pin shaft is further fixedly arranged on the second transmission piece, and the third pin shaft is simultaneously and slidably connected in the guide through hole and the special-shaped groove.
Compared with the prior art, the invention has the advantages that:
1. the special-shaped cam for driving the tissue clamp propelling structure to push the tissue clamp is provided with the special-shaped groove, and the special-shaped groove consists of a plurality of arc sections with different distances from the rotating center of the special-shaped cam, so that the tissue clamp propelling structure can obtain different propelling speeds in the process of uniform driving of the driving handle, and the tissue clamp propelling structure can be better suitable for the action of clamping the forceps head step by step.
The invention has simple structure and convenient use, and is suitable for large-scale popularization and use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic structural diagram of a shaped cam;
FIG. 4 is a schematic structural view of a portion of the structure of the present invention;
FIG. 5 is a cam curve of a shaped cam;
FIG. 6 is an enlarged view at B in FIG. 1;
FIG. 7 is a schematic view of the first and second feed mechanisms;
FIG. 8 is a schematic structural view of the safety assembly;
FIG. 9 is a schematic view of the indirect fixing of the first driving plate;
in the figure: the forceps head comprises a forceps head 1, a forceps head push rod 2, a pushing structure 3, a driving handle 4, a first feeding mechanism 5, a second feeding mechanism 6, a safety component 7, a transmission component 8, a special-shaped cam 9, a special-shaped groove 10, a tissue clamp pushing structure 11, a first arc section 12, a second arc section 13, a third arc section 14, a first pushing block 51, a first pushing component 52, a mounting seat 53, a stress pushing block 54, a torsion spring 55, a chamfer 56, a second pushing block 61, a second stress pushing block 62, an operating button 71, a safety transmission component 72, a bolt 73, a frame 74, a swing arm 75, a sliding block 76, a reset spring 77, a first transmission piece 81, a second transmission piece 82, a first pin shaft 83, a second pin shaft 84, a guide through hole 85, a third pin shaft 86, a cam main body 91, a rotating connecting hole 92, a transmission tooth 93, a driving tooth 94 and a gear 96.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, a cam control mechanism of a continuous hair clip applier comprises a tissue clip pushing structure 11 for pushing a tissue clip, and further comprises a driving handle 4, wherein a special-shaped cam 9 in driving connection with the driving handle 4 is arranged on one side of the driving handle 4, a special-shaped groove 10 is arranged on the special-shaped cam 9, the special-shaped groove 10 is composed of a plurality of arc sections with different rotating center distances from the special-shaped cam 9, a transmission assembly 8 is arranged between the special-shaped cam 9 and the tissue clip pushing structure 11, one end of the transmission assembly 8 is slidably connected in the special-shaped groove 10, and the other end of the transmission assembly is rotatably connected to the tissue clip pushing structure 11.
When the tissue clamp pushing device is used, external force is applied to the driving handle 4, the driving handle 4 rotates to drive the special-shaped cam 9 to rotate, and the driving special-shaped cam 9 transmits power to the tissue clamp pushing structure 11 through the transmission assembly 8 to push the tissue clamp. However, since the transmission assembly 8 is driven by the special-shaped groove 10, and the special-shaped groove 10 is composed of a plurality of arc sections with different distances from the rotation center of the special-shaped cam 9, the pushing speed of the tissue clamp pushing structure 11 in the linear direction is variable after the special-shaped cam 9 is transmitted to the tissue clamp pushing structure 11 in the process of uniform angular speed rotation. Therefore, the special-shaped cam 9 for driving the tissue clamp propelling structure 11 to propel the tissue clamp is provided with the special-shaped groove 10, and the special-shaped groove 10 consists of a plurality of arc sections with different distances from the rotating center of the special-shaped cam, so that the tissue clamp propelling structure 11 can obtain different propelling speeds in the process of driving the driving handle 4 at a constant speed, and the tissue clamp propelling structure is better suitable for the action of clamping the forceps head step by step.
As shown in fig. 2 to 5, the special-shaped groove 10 includes a first arc section 12, a second arc section 13 and a third arc section 14 which are sequentially communicated; the transmission assembly 8 comprises a first transmission piece 81 and a second transmission piece 82, wherein a first pin 83 and a second pin 84 are fixedly arranged on the first transmission piece 81, and preferably, the first pin 83 is arranged at the rotation center position of the special-shaped cam 9 to ensure the stability of the driving process. As shown in fig. 9, the first driving plate 81 may be fixed to the housing by coupling the coupling plates at both sides. Still be equipped with the direction through-hole 85 that link up first transmission piece 81 on the first transmission piece 81, second transmission piece 82 one end leads to and is connected with first transmission piece 81 rotation, and the other end rotates with tissue clamp propulsion structure 11 to be connected, still fixedly on the second transmission piece 82 being provided with third round pin axle 86, third round pin axle 86 is sliding connection simultaneously in direction through-hole 85 and dysmorphism recess 10. The radian of the projection of the first arc section 12 on the arc of the circle taking the rotation center of the special-shaped cam 9 as the center of circle is 20-40 degrees, and the difference of the projection distances of the two ends of the first arc section 12 in the radial direction of the circle taking the rotation center of the special-shaped cam 9 as the center of circle is less than 10 mm; the radian of the projection of the second arc section 13 on the arc of the circle taking the rotation center of the special-shaped cam 9 as the center of circle is 10-30 degrees, and the difference of the projection distances of the two ends of the second arc section 13 in the radial direction of the circle taking the rotation center of the special-shaped cam 9 as the center of circle is less than 20 mm; the projection radian of the third arc section 14 on the arc of the circle with the rotation center of the special-shaped cam 9 as the center of circle is 30-50 degrees, and the difference of the projection distances of the two ends of the third arc section 14 in the radial direction of the circle with the rotation center of the special-shaped cam 9 as the center of circle is less than 10 mm.
That is, in the driving process, after the special-shaped cam 9 rotates by 20 to 40 degrees, the third pin 86 is separated from the first arc section 12 and enters the second arc section 13, and at this time, the third pin 86 moves by a distance less than or equal to 5mm along the guide through hole 85. After the special-shaped cam 9 continues to rotate for 10-30 degrees, the third pin shaft 86 is separated from the second arc section 13 and enters the third arc section 14, and at the moment, the third pin shaft 86 moves for a distance below 20mm along the guide through hole 85. After the special-shaped cam 9 continues to rotate by 30-50 degrees, the third pin shaft 86 slides along the third arc section 14 to be pressed on the special-shaped cam 9, and at the moment, the third pin shaft 86 moves along the guide through hole 85 by a distance less than or equal to 5 mm.
Preferably, the radian of the projection of the first arc section 12 on the arc of the circle with the rotation center of the special-shaped cam 9 as the center is 30 degrees, and the difference between the distances of the two ends of the first arc section 12 projected in the radial direction of the circle with the rotation center of the special-shaped cam 9 as the center is 0.75 mm; the radian of the projection of the second arc section 13 on the arc of the circle with the rotation center of the special-shaped cam 9 as the center of circle is 20 degrees, and the difference of the distances of the two ends of the second arc section 13 projected on the radial direction of the circle with the rotation center of the special-shaped cam 9 as the center of circle is 3.75 mm; the projection radian of the third arc section 14 on the arc of the circle with the rotation center of the special-shaped cam 9 as the center of circle is 40 degrees, and the difference of the projection distances of the two ends of the third arc section 14 in the radial direction of the circle with the rotation center of the special-shaped cam 9 as the center of circle is 0.25 mm. The cam curve shown in fig. 5 is reached, and the two actions of clamping the forceps head and pushing the tissue clamp are in the most suitable state.
Referring to fig. 3 and 4, the shaped cam 9 includes a cam main body 91 and a rotation connection hole 92 provided on the cam main body 91, a transmission gear 93 is provided on a side of the cam main body 91 away from the shaped groove 10, and the cam main body 91 is drivingly connected to the driving handle 4 through the transmission gear 93. One side of the driving handle 4 close to the special-shaped cam 9 is provided with a driving tooth 94, a gear 96 is arranged between the driving tooth 94 and the transmission tooth 93, and two sides of the gear 96 are respectively meshed with the driving tooth 94 and the transmission tooth 93. The drive handle 4 transmits power to the cam body 91 through the gear teeth 93, gear 96 and drive teeth 94.
Referring to fig. 1 and 6, a stepwise feeding mechanism applied to a continuous hair clip applier comprises a binding clip 1 and a binding clip push rod 2 with one end connected to the binding clip 1, wherein the binding clip push rod 2 is moved to drive the binding clip 1 to open or clamp, and the binding clip push rod 2 and the binding clip 1 can be connected in a connecting manner commonly used in clip appliers in the prior art to control the opening and closing of the binding clip 1. One end, far away from the binding clip 1, of the binding clip push rod 2 is connected with a propelling structure 3, a first feeding mechanism 5 and a second feeding mechanism 6 are further arranged between the driving handle 4 and the propelling structure 3, the driving handle 4 pushes the propelling structure 3 to enter a first feeding space through the first feeding mechanism 5, and the driving handle 4 pushes the propelling structure 3 to enter a second feeding space through the second feeding mechanism 6. The first feeding space and the second feeding space are the spaces where the pushing structure 3 is located after the first feeding step and after the second feeding step.
When the pliers are used, the driving handle 4 is pulled, so that the first feeding mechanism 5 drives the pushing structure 3 to move until the pushing structure 3 is located in the first feeding space, the pliers head 1 is in a semi-closed state, and the driving handle 4 rotates by about 15 degrees. The driving handle 4 is pulled continuously, when the driving handle 4 rotates about 25 degrees, the binding clip 1 is opened again, and then the driving handle 4 is pulled, so that the second feeding mechanism 6 drives the pushing mechanism 3 to move until the pushing mechanism 3 is positioned in the second feeding space, at this time, the binding clip 1 is in a clamping state, and at this time, the driving handle 4 rotates about 42 degrees. Therefore, the invention realizes two-step clamping of the binding clip 1 by using the first feeding mechanism 5 and the second feeding mechanism 6, the first feeding mechanism 5 finishes the first step to clamp the binding clip 1 to a certain opening degree, thus the amplitude of the automatic flicking action of the tissue clip can be effectively reduced when the tissue clip is pushed out, and then the second feeding mechanism 6 is used for slowly clamping to be completely closed, so the invention is more suitable for the tissue clip which can flick out automatically when being pushed out.
Specifically, the first feeding mechanism 5 is located at the front end of the second feeding mechanism 6, and the driving handle 4 is rotated, so that the first feeding mechanism 5 pushes the propelling structure 3 before the second feeding mechanism 6. The structure design is reasonable, the first feeding mechanism 5 can drive the first step first, and the second feeding mechanism 6 can drive the second step. Referring to fig. 5 again, when the first feeding mechanism 5 pushes the propelling structure 3, the angle rotated by the driving handle 4 is 0 to 14 degrees, and when the angle rotated by the driving handle 4 is 15 degrees, the first feeding mechanism 5 completes pushing of the propelling structure 3; when the second feeding mechanism 6 pushes the pushing structure 3, the rotating angle of the driving handle 4 is 25-41 degrees, and when the rotating angle of the driving handle 4 is 42 degrees, the second feeding mechanism 6 completes pushing of the pushing structure 3.
Referring to fig. 6 and 7, the first feeding mechanism 5 includes a first pushing block 51 fixedly connected to the driving handle 4 and a first pushing assembly 52 connected to the pushing structure 3, and the first pushing block 51 is pressed on the first pushing assembly 52 by rotating the driving handle 4. In use, the drive handle 4 is rotated to press the first push block 51 against the first push assembly 52 to push the push structure 3. After a certain angle, due to the forward movement of the pushing structure 3 and the change of the angle of the first pushing block 51, the distance between the first pushing block 51 and the first pushing assembly 52 is increased, the first pushing block 51 and the first pushing assembly 52 are separated from each other, and the feeding in the first step is completed.
Specifically, the first pushing assembly 52 includes a mounting base 53 fixedly connected to the pushing structure 3 and a first force-bearing pushing block 54, one end of the first force-bearing pushing block 54 is rotatably connected to the mounting base 53, the other end of the first force-bearing pushing block extends in a direction close to the driving handle 4, and the torsion spring 55 is sleeved on the force-bearing pushing block 54. Therefore, when a large force is applied, the first stressed pushing block 54 can be turned over, so that after the clamping is completed, the first pushing block 51 returns to the rear end of the first stressed pushing block 54 from the front end of the first stressed pushing block 54.
Preferably, the bottom of the first force-bearing pushing block 54 close to the first pushing block 51 is provided with a chamfer 56 in the shape of a circular arc.
Referring to fig. 6 and 7, the second feeding mechanism 6 includes a second pushing block 61 fixedly connected to the driving handle 4 and a second forced pushing block 62 fixedly connected to the pushing structure 3, and the second pushing block 61 is pressed on the second forced pushing block 62 by rotating the driving handle 4. After the first feeding step is completed, the second pushing block 61 is pressed on the second stressed pushing block 62 to push the pushing structure 3 to perform the second feeding step.
Preferably, the first pushing assembly 52 is closer to the binding clip 1 than the second force-bearing pushing block 62, the first pushing block 51 is closer to the binding clip 1 than the second pushing block 61, and the distance between the first pushing block 51 and the second pushing block 61 is greater than the distance between the first pushing assembly 52 and the second force-bearing pushing block 62.
As shown in fig. 6-7, a safety assembly 7 for preventing the clip from being mistakenly clamped is further included, and one end of the safety assembly 7 extends into the first feeding mechanism 5 and/or the second feeding mechanism 6. The invention is provided with a safety component 7 which can prop against the second feeding mechanism 6 when the clamping is not needed so as to prevent the mistaken clamping.
Specifically, the safety assembly 7 includes a frame 74 and a safety transmission assembly 72 connected to the frame 74, one end of the safety transmission assembly 72 is connected to an operation button 71, the other end of the safety transmission assembly 72 is connected to a latch 73, the operation button 71 is in driving connection with the latch 73 through the safety transmission assembly 72, the latch 73 is moved to enable one end of the latch 73 to extend into the second feeding mechanism 6, the safety transmission assembly 72 includes a swing arm 75 with one end rotatably connected to the frame 74 and the other end inserted into the operation button 71, and a slider 76 slidably connected to the frame 74 is further included, the swing arm 75 is rotated to enable the swing arm 75 to be pressed on the slider 76, the latch 73 is fixedly connected to one end of the slider 76, a return spring 77 is pressed on one end of the slider 76 far from the latch 73, and the other end of the return spring 77 is pressed on the safety transmission assembly 72.
When the mistaken clamping is to be prevented, the locking bolt 73 extends to a position between the second pushing block 61 and the second stressed pushing block 62, and when the driving handle 4 is rotated, the second pushing block 61 is pressed on the bottom surface of the locking bolt 73 and is blocked, so that the second stressed pushing block 62 cannot be pushed. When the operation needs to be performed normally in the operation process, the operation button 71 is pressed, the operation button 71 drives the swing arm 75 to swing, one end of the swing arm 75 is pressed on the sliding block 76, the sliding block 76 drives the bolt 73 to synchronously slide away from the second feeding mechanism 6, and at the moment, the return spring 77 is compressed.
The working principle of the invention is as follows: when the feeding mechanism is used, the operating button 71 is pressed, the operating button 71 drives the swing arm 75 to swing, one end of the swing arm 75 is pressed on the sliding block 76, the sliding block 76 drives the bolt 73 to synchronously slide away from the second feeding mechanism 6, and at the moment, the return spring 77 is compressed. The driving handle 4 is pulled again, so that the first pushing block 51 is pressed onto the first pushing assembly 52, thereby pushing the pushing structure 3. After a certain angle is turned, due to the forward movement of the pushing structure 3 and the angle change of the first pushing block 51, the distance between the first pushing block 51 and the first pushing assembly 52 is increased, the first pushing block 51 and the first pushing assembly 52 are separated from each other, the feeding in the first step is completed, the forceps head 1 is in a semi-closed state, and the driving handle 4 is turned by about 15 degrees. The driving handle 4 is continuously pulled, when the driving handle 4 rotates by about 25 degrees, the binding clip 1 is opened again, then the driving handle 4 is pulled, the second pushing block 61 is pressed on the second stressed pushing block 62 to push the pushing structure 3 to perform the second feeding step, at this time, the binding clip 1 is in a clamping state, and at this time, the driving handle 4 rotates by about 42 degrees. Meanwhile, the driving handle 4 rotates to drive the special-shaped cam 9 to rotate, after the special-shaped cam 9 rotates by 20-40 degrees, the third pin shaft 86 is separated from the first arc section 12 and enters the second arc section 13, and at the moment, the third pin shaft 86 moves by a distance smaller than or equal to 5mm along the guide through hole 85. After the special-shaped cam 9 continues to rotate for 10-30 degrees, the third pin shaft 86 is separated from the second arc section 13 and enters the third arc section 14, and at the moment, the third pin shaft 86 moves for a distance below 20mm along the guide through hole 85. After the special-shaped cam 9 continues to rotate by 30-50 degrees, the third pin shaft 86 slides along the third arc section 14 to be pressed on the special-shaped cam 9, and at the moment, the third pin shaft 86 moves along the guide through hole 85 by a distance less than or equal to 5 mm. The third pin 86 drives the tissue clamp advancing structure 11 to move linearly during the sliding process along the guiding through hole 85. Therefore, the pushing speed of the tissue clamp pushing structure 11 in the linear direction is variable after the special-shaped cam 9 is transmitted to the tissue clamp pushing structure 11 in the process of rotating at the angular speed at a constant speed. Therefore, the special-shaped cam 9 for driving the tissue clamp propelling structure 11 to propel the tissue clamp is provided with the special-shaped groove 10, and the special-shaped groove 10 is composed of a plurality of arc sections with different distances from the rotating center of the special-shaped cam, so that the tissue clamp propelling structure 11 can obtain different propelling speeds in the process of driving the driving handle 4 at a constant speed, and the action of clamping the forceps head step by step can be better applied.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the forceps head 1, the forceps head push rod 2, the pushing structure 3, the driving handle 4, the first feeding mechanism 5, the second feeding mechanism 6, the safety component 7, the transmission component 8, the special-shaped cam 9, the special-shaped groove 10, the tissue clamp pushing structure 11, the first arc section 12, the second arc section 13, the third arc section 14, the first pushing block 51, the first pushing component 52, the mounting seat 53, the stressed pushing block 54, the torsion spring 55 and the chamfer 56 are more used, the terms of the second pushing block 61, the second force-bearing pushing block 62, the operation button 71, the safety transmission assembly 72, the latch 73, the frame 74, the swing arm 75, the slider 76, the return spring 77, the first transmission piece 81, the second transmission piece 82, the first pin 83, the second pin 84, the guide through hole 85, the third pin 86, the cam body 91, the rotation connecting hole 92, the transmission tooth 93, the driving tooth 94, the gear 96 and the like are used, but the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A cam control mechanism for a burst clip applier comprising a tissue clip advancing structure (11) for advancing a tissue clip, characterized by: still include actuating handle (4), one side of actuating handle (4) is equipped with special-shaped cam (9) be connected with actuating handle (4) drive, be equipped with special-shaped recess (10) on special-shaped cam (9), special-shaped recess (10) are by a plurality of sections and the rotation center of special-shaped cam (9) apart from the segmental arc that is inequality to constitute, special-shaped cam (9) and tissue clamp are equipped with drive assembly (8) between advancing structure (11), drive assembly (8) one end sliding connection is in special-shaped recess (10), and the other end rotates to be connected and organizes to press from both sides and advance structure (11).
2. The cam control mechanism for a burst clip applier of claim 1, wherein: the special-shaped groove (10) comprises a first arc section (12), a second arc section (13) and a third arc section (14) which are sequentially communicated;
the radian of the projection of the first arc section (12) on the arc of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is 20-40 degrees, and the difference of the projection distances of the two ends of the first arc section (12) in the radial direction of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is less than 10 mm;
the radian of the projection of the second arc section (13) on the arc of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is 10-30 degrees, and the difference of the projection distances of the two ends of the second arc section (13) in the radial direction of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is less than 20 mm;
the projection radian of the third arc section (14) on the arc of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is 30-50 degrees, and the difference of the projection distances of the two ends of the third arc section (14) in the radial direction of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is less than 10 mm.
3. The cam control mechanism for a burst clip applier of claim 2, wherein: the radian of the projection of the first arc section (12) on the arc of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is 30 degrees, and the difference of the distances of the two ends of the first arc section (12) projected in the radial direction of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is 0.75 mm;
the radian of the projection of the second arc section (13) on the arc of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is 20 degrees, and the difference of the distances of the two ends of the second arc section (13) projected in the radial direction of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is 3.75 mm;
the projection radian of the third arc section (14) on the arc of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is 40 degrees, and the difference of the projection distances of the two ends of the third arc section (14) in the radial direction of the circle taking the rotation center of the special-shaped cam (9) as the center of circle is 0.25 mm.
4. The cam control mechanism for a burst clip applier of claim 1, wherein: the special-shaped cam (9) comprises a cam main body (91) and a rotating connecting hole (92) formed in the cam main body (91), a transmission gear (93) is arranged on one side, away from the special-shaped groove (10), of the cam main body (91), and the cam main body (91) is in driving connection with the driving handle (4) through the transmission gear (93).
5. The cam control mechanism for a burst clip applier of claim 4, wherein: one side of the driving handle (4) close to the special-shaped cam (9) is provided with driving teeth (94), a gear (96) is arranged between the driving teeth (94) and the transmission teeth (93), and two sides of the gear (96) are respectively meshed with the driving teeth (94) and the transmission teeth (93).
6. The cam control mechanism for a burst clip applier of claim 1, wherein: the pliers are characterized by further comprising a pushing structure (3) for pushing the pliers head push rod (2) to drive the pliers head (1) to open or clamp, a first feeding mechanism (5) and a second feeding mechanism (6) are further arranged between the driving handle (4) and the pushing structure (3), the driving handle (4) pushes the pushing structure (3) to enter the first feeding space through the first feeding mechanism (5), and the driving handle (4) pushes the pushing structure (3) to enter the second feeding space through the second feeding mechanism (6);
the first feeding mechanism (5) comprises a first pushing block (51) fixedly connected to the driving handle (4) and a first pushing assembly (52) connected to the pushing structure (3), the first pushing block (51) can be pressed on the first pushing assembly (52) by rotating the driving handle (4), the first pushing assembly (52) comprises a mounting seat (53) fixedly connected to the pushing structure (3) and a first stress pushing block (54), one end of the first stress pushing block (54) is rotatably connected to the mounting seat (53), the other end of the first stress pushing block extends towards the direction close to the driving handle (4), and a torsion spring (55) is sleeved on the first stress pushing block (54);
the second feeding mechanism (6) comprises a second pushing block (61) fixedly connected to the driving handle (4) and a second stressed pushing block (62) fixedly connected to the pushing structure (3), and the second pushing block (61) can be pressed on the second stressed pushing block (62) by rotating the driving handle (4); the first pushing assembly (52) is closer to the tong head (1) than the second stressed pushing block (62), the first pushing block (51) is closer to the tong head (1) than the second pushing block (61), and the distance between the first pushing block (51) and the second pushing block (61) is larger than the distance between the first pushing assembly (52) and the second stressed pushing block (62).
7. The cam control mechanism for a burst clip applier of claim 6, wherein: the first feeding mechanism (5) is positioned at the front end of the second feeding mechanism (6), the driving handle (4) is rotated, and the first feeding mechanism (5) pushes the propelling structure (3) before the second feeding mechanism (6).
8. The cam control mechanism for a burst clip applier of claim 6, wherein: when the first feeding mechanism (5) pushes the pushing structure (3), the rotating angle of the driving handle (4) is 0-14 degrees, and when the second feeding mechanism (6) pushes the pushing structure (3), the rotating angle of the driving handle (4) is 25-41 degrees.
9. The cam control mechanism for a burst clip applier of claim 8, wherein: when the angle that driving handle (4) rotated was 15 degrees, first feed mechanism (5) accomplished the promotion to advancing structure (3), when the angle that driving handle (4) rotated was 42 degrees, second feed mechanism (6) accomplished the promotion to advancing structure (3).
10. The cam control mechanism for a burst clip applier of claim 1, wherein: drive assembly (8) are including first transmission piece (81) and second transmission piece (82), fixed being provided with first round pin axle (83) and second round pin axle (84) on first transmission piece (81), still being equipped with direction through-hole (85) of lining up first transmission piece (81) on first transmission piece (81), second transmission piece (82) one end rotates with first transmission piece (81) to be connected, and the other end rotates with tissue clamp propulsion structure (11) to be connected, still fixed being provided with third round pin axle (86) on second transmission piece (82), third round pin axle (86) sliding connection is in direction through-hole (85) and dysmorphism recess (10) simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375725.5A CN113796915B (en) | 2021-11-19 | 2021-11-19 | Cam control mechanism of repeating clip applier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375725.5A CN113796915B (en) | 2021-11-19 | 2021-11-19 | Cam control mechanism of repeating clip applier |
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| CN113796915A CN113796915A (en) | 2021-12-17 |
| CN113796915B true CN113796915B (en) | 2022-02-22 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5409498A (en) * | 1992-11-05 | 1995-04-25 | Ethicon, Inc. | Rotatable articulating endoscopic fastening instrument |
| US5725536A (en) * | 1996-02-20 | 1998-03-10 | Richard-Allen Medical Industries, Inc. | Articulated surgical instrument with improved articulation control mechanism |
| CN105555207A (en) * | 2015-05-15 | 2016-05-04 | 杭州光典医疗器械有限公司 | Surgery fixture clip applier |
| CN109303583A (en) * | 2018-10-31 | 2019-02-05 | 江苏海泽医疗科技发展有限公司 | A kind of medical continuously-applied Clip Applier trigger configuration |
| JP2019213641A (en) * | 2018-06-12 | 2019-12-19 | 株式会社ハマダ | forceps |
| CN113143387A (en) * | 2021-04-15 | 2021-07-23 | 苏州泰宝生物医疗科技有限公司 | Repeating clip applier capable of installing tissue clip bin |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5579978A (en) * | 1991-10-18 | 1996-12-03 | United States Surgical Corporation | Apparatus for applying surgical fasteners |
| EP3445256B1 (en) * | 2016-04-21 | 2024-01-10 | Applied Medical Resources Corporation | Laparoscopic clip applier |
| US20170340325A1 (en) * | 2016-05-31 | 2017-11-30 | Covidien Lp | Endoscopic reposable surgical clip applier |
-
2021
- 2021-11-19 CN CN202111375725.5A patent/CN113796915B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5409498A (en) * | 1992-11-05 | 1995-04-25 | Ethicon, Inc. | Rotatable articulating endoscopic fastening instrument |
| US5725536A (en) * | 1996-02-20 | 1998-03-10 | Richard-Allen Medical Industries, Inc. | Articulated surgical instrument with improved articulation control mechanism |
| CN105555207A (en) * | 2015-05-15 | 2016-05-04 | 杭州光典医疗器械有限公司 | Surgery fixture clip applier |
| JP2019213641A (en) * | 2018-06-12 | 2019-12-19 | 株式会社ハマダ | forceps |
| CN109303583A (en) * | 2018-10-31 | 2019-02-05 | 江苏海泽医疗科技发展有限公司 | A kind of medical continuously-applied Clip Applier trigger configuration |
| CN113143387A (en) * | 2021-04-15 | 2021-07-23 | 苏州泰宝生物医疗科技有限公司 | Repeating clip applier capable of installing tissue clip bin |
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| CN113796915A (en) | 2021-12-17 |
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