CN117338369B - Medical clip applier - Google Patents
Medical clip applier Download PDFInfo
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- CN117338369B CN117338369B CN202311576901.0A CN202311576901A CN117338369B CN 117338369 B CN117338369 B CN 117338369B CN 202311576901 A CN202311576901 A CN 202311576901A CN 117338369 B CN117338369 B CN 117338369B
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- handle
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- blind hole
- gear
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- 230000000670 limiting effect Effects 0.000 claims abstract description 97
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 238000004898 kneading Methods 0.000 claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 11
- 230000002439 hemostatic effect Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 3
- 238000002357 laparoscopic surgery Methods 0.000 description 2
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
- A61B17/1285—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 for minimally invasive surgery
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Control Devices (AREA)
- Surgical Instruments (AREA)
Abstract
The application relates to a medical clip applier, which relates to the technical field of medical equipment, and comprises a handle assembly, a handle assembly and a handle assembly, wherein the handle assembly comprises a fixed handle and a rotary handle which are mutually hinged; the clamping assembly is connected with the handle assembly and is matched with the rotation of the rotating handle to realize clamping or opening; the limiting gear switching mechanism is used for switching limiting gears, and the limiting gears comprise a first gear used for realizing clamping of the clamping assembly and a second gear used for realizing a locking state of the clamping assembly; the rotation limiting mechanism is arranged on the handle assembly and limits the rotation angle of the rotation handle by a corresponding angle based on the gear selected by the limiting gear switching mechanism. The anti-kneading locking device has the effect of preventing kneading locking under different kneading states.
Description
Technical Field
The application relates to the field of medical instruments, in particular to a medical clip applier.
Background
In the laparoscopic surgery process, the hemostatic clamp is generally used for sealing tissues such as blood vessels in a human body, the rapid and accurate placement of the hemostatic clamp plays a vital role in the safety of the laparoscopic surgery, and the clamp applying clamp clamps the hemostatic clamp to enter the abdominal cavity of the human body to place the hemostatic clamp is a current widely applied mode.
At present, because the hemostatic clamp is locked through the lock catch when being completely closed, the hemostatic clamp can only maintain the clamping of the hemostatic clamp through the clamping of the clamp applier by a doctor when the specified placement position is not reached, and the clamping degree of the clamp applier is maintained, so that the operation skill of the doctor is required in the operation process.
In view of the above-mentioned prior art, the force of the doctor in the kneading state and the locking state of applying a kneading force to the clip applier is not easy to control, and excessive kneading is easy to cause the hemostatic clip to be locked in advance to affect the subsequent operation.
Disclosure of Invention
The application clamp with the anti-kneading locking function is provided.
In a first aspect, the present application provides a medical clip applier, which adopts the following technical scheme:
a medical clip applier comprising:
the handle assembly comprises a fixed handle and a rotating handle which are mutually hinged;
the clamping assembly is connected with the handle assembly and is matched with the rotation of the rotating handle to realize clamping or opening;
the limiting gear switching mechanism is used for switching limiting gears, and the limiting gears comprise a first gear used for realizing clamping of the clamping assembly and a second gear used for realizing a locking state of the clamping assembly;
the rotation limiting mechanism is arranged on the handle assembly and limits the maximum rotation angle of the rotation handle by a corresponding angle based on the gear selected by the limiting gear switching mechanism.
Through adopting above-mentioned technical scheme, be connected between twist grip and the clamping assembly in the handlebar subassembly and realize the adjustment to clamping assembly's clamping angle size, spacing gear switching mechanism switches corresponding gear, different gears correspond different job scenario, different job scenario corresponds the different biggest angles of kneading between fixed handle and the twist grip, rotate spacing machine cooperation spacing gear switching mechanism and carry out spacingly to twist grip's biggest rotation angle under the different modes, cooperation fast switch over centre gripping and locking state between each mechanism and the subassembly.
Optionally, a first pressing spring and a second pressing spring are arranged between the fixed handle and the rotating handle, the bottom end of the first pressing spring is fixedly connected to the fixed handle, the bottom end of the second pressing spring is fixedly connected to the rotating handle, and the top end of the first pressing spring is buckled with the top end of the second pressing spring.
By adopting the technical scheme, the first pressing spring and the second pressing spring form a kneading opposing force between the fixed handle and the rotating handle, and the opposing force enables the two handles to be opened under the condition of no kneading force loss.
Optionally, the clamping assembly includes pincers mouth, pincers pipe, push rod and bulb pull rod, the bulb pull rod with twist grip's top is connected, the bulb pull rod keep away from twist grip's one end butt in the push rod, the push rod keep away from the one end of bulb pull rod with the pincers mouth is connected and passes through the motion of push rod drives pincers mouth open and shut, pincers pipe parcel covers the pull rod outside is used for to the isolated protection of pull rod, pincers pipe is hollow structure and keeps away from pincers mouth's one end fixed connection is in on the fixed handle.
Through adopting above-mentioned technical scheme, the bulb end of bulb pull rod is connected at twist grip, drives the push rod through the bulb pull rod of twist grip pulling and makes the pincers mouth in the clamping assembly pinch tightly through the pulling of twist grip, and pincers pipe one end is connected and is guaranteed pincers pipe's connection stability on fixed handle, and pincers pipe has increased the protectiveness to the push rod in the push rod outside.
Optionally, a through hole is formed in the fixed handle, and the through hole is not overlapped with a hinge point between the fixed handle and the rotating handle.
The limiting gear switching mechanism comprises a first button which penetrates through the through hole and slides in the through hole along the length direction of the through hole so as to switch a first gear and a second gear.
Through adopting above-mentioned technical scheme, the through-hole that sets up on fixed handle cooperates the spacing gear switching mechanism that first button made to switch fast in two kinds of gears.
Optionally, the device further comprises a first spring and a button pin, wherein a first blind hole is formed along the central axis of the fixed handle in the direction from the through hole to the inside of the fixed handle; offer on the first button with draw-in groove that corresponds of first blind hole, first spring is located in the first blind hole, the one end butt of first spring is in the bottom of first blind hole, the one end that first spring kept away from first blind hole bottom is connected the button pin, the button pin with the one end that first spring is connected is arranged in the first blind hole, the one end that the button pin kept away from the spring corresponds the cooperation in order to form the rotation spacing to first button in the draw-in groove.
Through adopting above-mentioned technical scheme, first spring makes button pin and first blind hole bottom produce relative resistance in first blind hole, makes the button pin cooperate and forms the rotation to first button in the draw-in groove and prescribes a limit to, prevents that first button from producing to rotate when pressing and producing the influence to spacing process.
Optionally, the rotation limiting mechanism includes a rotation protrusion and a limiting groove, the rotation protrusion is fixed on one side of the rotation handle close to the fixed handle, the limiting groove is formed on the first button, the limiting groove does not correspond to the rotation protrusion when the first button is in a gear, and the rotation protrusion correspondingly abuts against the peripheral surface of the first button when the rotation handle is in a maximum rotation angle; when the first button is in a second gear, the grooves and the protruding blocks correspond to each other, so that the rotating protruding blocks are in clamping fit with the limiting grooves when the rotating handle is in a maximum rotating angle.
Through adopting above-mentioned technical scheme, the contact point of rotation lug and first button is different under gear one and gear two's different states, and under gear one's state, no matter what kneading force is used can not cause the locking in advance, through the existence of spacing recess, and when the rotation handle was kneaded to maximum angle under gear two's state, rotation lug joint can reach fixture maximum locking state in spacing recess.
Optionally, the limiting gear switching mechanism comprises a second button, a second blind hole is formed in the central axis of the end surface of the fixed handle far away from the rotating handle in a direction pointing to the rotating handle, and the second button slides in the second blind hole to realize the first gear and the second gear switching.
By adopting the technical scheme, the second button moves in the aperture of the second blind hole, and the second button can be switched back and forth between the first gear and the second gear to rapidly change different kneading states between the handle mechanisms.
Optionally, the rotation stop gear includes rotation gag lever post and rotation lug, set up along the axis in fixed handle with the inside third blind hole that communicates of second blind hole, rotation gag lever post in the third blind hole motion and with the corresponding cooperation of second button is in order to remove according to the removal of second button, the rotation lug is fixed on the terminal surface that the rotation handle is close to fixed handle.
Through adopting above-mentioned technical scheme, rotate the gag lever post and move spacingly through the third blind hole, the intercommunication makes in the hole second button and rotate corresponding cooperation between the gag lever post and be connected between second button and the third blind hole, and the linkage cooperation reaches and switches between gear one and the gear two between second button and the rotation gag lever post.
Optionally, a triangular notch is formed in the circumferential surface of the second button, the triangular notch faces the third blind hole, the bottom end of the rotation limiting rod is a frustum correspondingly matched with the triangular notch, and a limiting boss matched with the rotation lug is formed at one end, far away from the frustum, of the rotation limiting rod; the triangular notch on the second button is correspondingly matched with the frustum on the rotation limiting rod so that the second button and the rotation limiting rod move in a matched mode between the second blind hole and the third blind hole;
when in gear, the limiting boss is in closed butt with the fixed handle, the rotating handle is kneaded to the maximum kneading angle, the rotating lug is in butt on the limiting boss, when in gear II, the limiting boss is far away from the fixed handle so as to obtain a butt hole formed by a gap between the limiting boss and the fixed handle, and the rotating lug rotates to the butt hole to be matched with the limiting boss in a clamping mode.
Through adopting above-mentioned technical scheme, the cooperation linkage between triangle notch and the frustum has guaranteed the linkage between second button and the rotation gag lever post, and the different connected state between the two corresponds different gears and forms different rotation spacing, and the correspondence cooperation of triangle notch and frustum can more conveniently promote through the second button promotion rotation gag lever post, and the joint relation between spacing boss and the rotation lug can reach spacing certainty to rotation limit structure.
Optionally, there is the second spring in the second blind hole, there is the third spring in the third blind hole, the one end fixed connection of second spring is in the aperture bottom of second blind hole, the one end that the second spring kept away from second blind hole bottom is connected the bottom of second button, the one end fixed connection of third spring is in the aperture bottom of third blind hole, the one end that the third blind hole bottom was kept away from to the spring is connected the one end that the frustum was kept away from to the rotation gag lever post.
Through adopting above-mentioned technical scheme, release pinching force makes the rotation gag lever post reset through the spring force in the third blind hole after the pinching locking, and the spring force in the second blind hole makes the second button reset.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the utility model provides a be provided with rotation stop gear, make clamp application have different kneading state through rotation stop gear, one kind is the clamping state to the hemostatic clamp, and the hemostatic clamp locking can not be made to the size of kneading force, still one kind state can be to hemostatic clamp kneading locking when kneading.
2. The one-hand operation button is convenient for rapidly switching the two kneading limiting states.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;
fig. 2 is a schematic front view of embodiment 1 of the present application in a gear two state;
fig. 3 is a schematic front view of embodiment 1 of the present application in a gear one state;
FIG. 4 is a schematic cross-sectional view of the structure of FIG. 3 taken along section A-A;
FIG. 5 is a schematic view of a partial cross-sectional structure of embodiment 1 of the present application in a gear two state;
FIG. 6 is a schematic cross-sectional view of the structure of FIG. 5 taken along section B-B;
fig. 7 is a schematic front view of embodiment 2 of the present application in a gear two state;
FIG. 8 is an enlarged partial schematic view at C in FIG. 7;
fig. 9 is a schematic front view of embodiment 2 of the present application in a gear one state;
in the figure, 1, a handle assembly; 11. a fixed handle; 111. a through hole; 112. a first blind hole; 113. a second blind hole; 1131. a limiting hole; 114. a third blind hole; 12. rotating the handle; 13. a hinge point; 14. a connecting plate; 15. a first pressing spring; 16. a second pressing spring; 17. a bolt; 18. an abutment hole; 2. a clamping assembly; 21. a clamp mouth; 211. an upper clamp mouth; 212. a lower clamp mouth; 22. a clamp pipe; 23. a push rod; 24. a ball head pull rod; 241. ball head; 25. a connecting sheet; 3. a limit gear switching mechanism; 31. a first button; 311. a sliding part; 312. a pressing part; 313. a clamping groove; 32. a second button; 321. a boss; 322. triangular notch; 33. rotating the limiting rod; 331. a frustum; 332. a limit boss; 4. a rotation limiting mechanism; 41. a limit groove; 42. rotating the protruding block; 5. a first spring; 6. a button pin; 7. a second spring; 8. and a third spring.
Detailed Description
The present application is described in further detail below with reference to fig. 1-8.
Example 1: a medical clip applier, as shown in fig. 1, comprises a handle assembly 1, wherein the handle assembly 1 comprises a fixed handle 11 and a rotary handle 12 which are hinged with each other;
the clamping assembly 2 is connected with the handle assembly 1 and is matched with the rotation of the rotating handle 12 to realize clamping or opening;
the limiting gear switching mechanism 3 is used for switching limiting gears, and the limiting gears comprise a first gear used for realizing clamping of the clamping assembly 2 and a second gear used for realizing a locking state of the clamping assembly 2;
the rotation limiting mechanism 4 is arranged on the handle assembly 1, and the rotation limiting mechanism 4 limits the rotation angle of the rotation handle 12 by a corresponding angle based on the gear selected by the limiting gear switching mechanism 3.
In this embodiment, the rotating handle 12 rotates around the hinge point 13, the rotating handle 12 is connected with the clamping assembly 2 and drives the clamping assembly 2 to perform clamping action, and the limiting gear switching mechanism 3 performs conversion between different gears, so that the rotating limiting mechanism 4 achieves different limiting effects in different gear states.
Specifically, the fixed handle 11 has two circular connection plates 14 around the hinge point 13, the rotating handle 12 has connection plates 14 around the hinge point 13, the connection plates 14 on the rotating handle 12 are correspondingly matched with the connection plates 14 on the fixed handle 11, the connection plates 14 on the rotating handle 12 are between the two connection plates 14 of the fixed handle 11, the fixed handle 11 and the rotating handle 12 rotate around the hinge point 13, the hinge point 13 is located at the top of the fixed handle 11, and the hinge point 13 is also located at the top of the rotating handle 12.
The clamping assembly 2 is respectively connected with the rotating handle 12 and the fixed handle 11, the clamping assembly 2 is movably connected with the rotating handle 12, and the rotating handle 12 pulls the clamping assembly 2 to enable the clamping assembly 2 to achieve a clamping or opening state.
The limiting gear switching mechanism 3 is arranged on the handle assembly 1 and located below the hinging point 13, the limiting gear switching mechanism 3 moves on the fixed handle 11 to switch gears, and the clamping assembly 2 is driven by the rotating handle 12 to achieve different clamping states.
The rotation limiting mechanism 4 is also arranged on the handle assembly 1 and corresponds to the limiting gear switching mechanism 3, and is matched with the limiting gear switching mechanism 3 to achieve different rotation angles under different gears for limiting control.
As shown in fig. 2, in the present embodiment, a first pressing spring 15 and a second pressing spring 16 are further provided between the fixed handle 11 and the rotary handle 12, the first pressing spring 15 and the second pressing spring 16 being between the fixed handle 11 and the rotary handle 12.
The bottom end of the first pressing spring 15 is fixedly connected to one side, close to the rotating handle 12, of the fixed handle 11 through a bolt 17.
The bottom end of the second pressing spring 16 is fixedly connected to the side, close to the fixed handle 11, of the rotating handle 12 through a bolt 17.
The top end of the first pressing spring 15 and the top end of the second pressing spring 16 are matched and buckled, and the first pressing spring 15 and the second pressing spring 16 form repulsive opposing force between the fixed handle 11 and the rotating handle 12 to the handles so as to ensure that the two handles repel each other when not pinched.
In this embodiment, the clamping assembly 2 includes a jaw 21, a jaw tube 22, a push rod 23 and a ball-head pull rod 24, and two ends of the ball-head pull rod 24 are respectively connected with the rotary handle 12 and the push rod 23.
Specifically, one end of the ball-head pull rod 24 is connected to the top end of the rotating handle 12, the ball head 241 of the ball-head pull rod 24 is embedded in the rotating handle 12, the rotating handle 12 pulls the ball-head pull rod 24 to rotate in the rotating handle 12, the ball-head pull rod 24 is fixedly connected with the push rod 23, and the ball-head pull rod 24 and the push rod 23 integrally move.
The push rod 23 is a cylindrical rod with two ends respectively connected with the ball head pull rod 24 and the clamp mouth 21, the push rod 23 and the ball head pull rod 24 are fixedly and integrally connected to move, and the push rod 23 and the clamp mouth 21 are connected to drive the clamp mouth 21 to achieve different opening and closing states.
Specifically, a connecting piece 25 is arranged between the clamp mouth 21 and the push rod 23, and two ends of the connecting piece 25 are respectively hinged with the push rod 23 and the clamp mouth 21.
The push rod 23 is hinged with the upper clamp mouth 211 through a connecting sheet 25, the push rod 23 is hinged with the lower clamp mouth 212 through the connecting sheet 25, the upper clamp mouth 211, the lower clamp mouth 212 and the two connecting sheets 25 form a diamond structure, and the push rod 23 moves to pull the connecting sheets 25 to enable the upper clamp mouth 211 and the lower clamp mouth 212 to open and close.
The clamp tube 22 is a hollow cylindrical tube, the clamp tube 22 is wrapped and sleeved outside the push rod 23, one end of the clamp tube 22 is fixed on the fixed handle 11 and is integrally connected with the fixed handle 11, and one end of the clamp tube 22 far away from the fixed handle 11 is hinged with the clamp mouth 21.
In the state that the clamping mechanism is opened, the clamp mouth 21 is kept in an opened state, the kneading rotary handle 12 moves to drive the push rod 23 to move in a direction away from the clamp mouth 21, the push rod 23 drives the hinge point 13 between the two connecting pieces 25 to move, the angle between the two connecting pieces 25 is reduced, the hinge point 13 between the clamp mouth 21 and the connecting pieces 25 moves backwards, and the upper clamp mouth 211 and the lower clamp mouth 212 are closed around the hinge point 13 between the two.
In the closed state of the clamping mechanism, the kneading force between the rotating handle 12 and the fixed handle 11 is released, the rotating handle 12 rotates around the hinge point 13 between the rotating handle 12 and the fixed handle 11 through mutual abutting of the first pressing spring 15 and the second pressing spring 16, the push rod 23 moves towards the clamp mouth 21, the push rod 23 pushes the hinge point 13 between the connecting pieces 25, the angle between the two connecting pieces 25 becomes larger, the hinge point 13 between the connecting piece 25 and the upper clamp mouth 211 and the hinge point 13 between the other connecting piece 25 and the lower clamp mouth 212 are far away from each other, and the clamp mouth 21 is opened through rotation of the upper clamp mouth 211 and the lower clamp mouth 212 around the hinge point 13 between the two.
As shown in fig. 3 to 4, in the present embodiment, a through hole 111 is formed in the fixed handle 11, the through hole 111 is a circular hole that completely penetrates, and the through hole 111 is formed below the hinge point 13 between the fixed handle 11 and the rotating handle 12.
The limit gear switching mechanism 3 is a cylindrical first button 31, and the length of the first button 31 is longer than the thickness of the fixed handle 11.
The first button 31 is constituted by a sliding portion 311 and a pressing portion 312, the sliding portion 311 slides in the through hole 111 to switch between the first gear and the second gear, the length of the sliding portion 311 is longer than the length of the hole, the pressing portion 312 is a pie-shaped structure at both ends of the sliding portion 311, and the diameter of the pressing portion 312 is larger than the diameter of the through hole 111 to prevent the first button 31 from slipping out of the through hole 111 when pressed.
In this embodiment, a first blind hole 112 is formed on the central axis in the fixed handle 11 in a direction from the through hole 111 to the jaw 21, and the first blind hole 112 is a cylindrical hole having a certain depth.
The first button 31 is provided with a clamping groove 313 corresponding to the direction opposite to the depth direction of the first blind hole 112, the width of the clamping groove 313 is the same as the aperture of the first blind hole 112, the clamping groove 313 is provided with a sliding part 311 penetrating between the two side pressing parts 312, and the length of the clamping groove 313.
Also included in this embodiment is a first spring 5 and a button pin 6.
The button pin 6 is a cylindrical pin, and the diameter of the button pin 6 is the same as the diameter of the first blind hole 112 and the width of the clamping groove 313.
Specifically, the first spring 5 is in the first blind hole 112 and one end is fixed at the bottom of the first blind hole 112, the other end of the first spring 5 is connected with one end of the button pin 6, one end of the button pin 6 connected with the first spring 5 is arranged in the first blind hole 112, one end of the button pin 6 far away from the first spring 5 is clamped and matched in the clamping groove 313 to form a rotation limit for the first button 31, so that the first button 31 can slide in the through hole 111 but not rotate
In the present embodiment, the rotation limiting mechanism 4 includes a limiting groove 41 and a rotation projection 42.
Specifically, the limiting groove 41 is formed on a peripheral wall of the sliding portion 311, which is close to the rotating handle 12, the limiting groove 41 is offset from a center line of the sliding portion 311, and is formed on a cylindrical peripheral surface of the sliding portion 311, which is close to the pressing portion 312, on one side of the center line, and a forming direction of the limiting groove 41 is directed from the center of a circle to the rotating handle 12. In the gear, the limiting groove 41 does not correspond to the boss 321, and when the first button 31 is pressed to the gear two, the limiting groove 41 moves along with the first button 31 to reach the position corresponding to the rotating lug 42.
The rotating lug 42 is a square lug corresponding to the size and shape of the limiting groove 41, and the rotating lug 42 is fixed on one side of the rotating handle 12 close to the fixed handle 11 and is positioned below the hinging point 13 and can be correspondingly clamped and matched with the limiting groove 41.
The first button 31 is in gear, the limiting groove 41 and the rotating lug 42 are not corresponding to each other, the opening and closing angle between the rotating handle 12 and the fixed handle 11 is maximum, the upper clamp mouth 211 and the lower clamp mouth 212 are in an open state, the kneading rotating handle 12 drives the push rod 23 to enable the clamp mouth 21 to be gradually closed, the clamp mouth is kneaded to a certain angle, the rotating lug 42 is correspondingly abutted to the peripheral surface of the sliding part 311 on the first button 31, and the maximum kneading angle in a gear one state is reached, at the moment, the clamp mouth 21 is not completely closed.
As shown in fig. 5 to 6, when the first button 31 is pressed, the sliding portion 311 slides along the through hole 111 to reach the second gear, the limit groove 41 corresponds to the rotation protrusion 42, the rotation knob 12 is continuously kneaded, the rotation protrusion 42 is clamped in the limit groove 41, the maximum kneading angle of the second gear is reached, and the clamp mouth 21 is completely closed and locked.
The implementation principle of the embodiment of the application is as follows: the rotary handle 12 is pinched, the clamping mechanism is driven to gradually close the clamp mouth 21, the rotary lug 42 is abutted against the peripheral surface of the sliding part 311 when the clamp mouth 21 is pinched to the maximum angle state in the gear, at the moment, the clamp mouth 21 cannot be pinched, the first button 31 is pressed to slide in the through hole 111, the rotary handle 12 is continuously pinched, the rotary lug 42 is clamped and matched in the limit groove 41 to reach the maximum pinching angle, and the clamp mouth 21 is completely closed and locked.
Example 2:
as shown in fig. 7 to 8, in the present embodiment, the limit gear switching mechanism 3 includes a second button 32, and one end of the second button 32 protrudes from the end surface of the fixed handle 11 away from the rotary handle 12.
The central axis of the end surface of the fixed handle 11 far away from the rotary handle 12 is provided with a second blind hole 113 pointing to the inner direction of the rotary handle 12, the second blind hole 113 is a cylindrical hole with a certain depth, and a circle of limiting holes 1131 with the aperture larger than that of the second blind hole 113 are formed at the position close to the opening of the second blind hole 113.
The second button 32 moves in the second blind hole 113, and switching between the first gear and the second gear is achieved by pressing the second button 32.
Specifically, the second button 32 is provided with a boss 321 matched with the limiting hole 1131, the boss 321 moves in the limiting hole 1131, the diameter of the boss 321 corresponds to the aperture of the limiting hole 1131, and the boss 321 and the limiting hole 1131 correspondingly prevent the second button 32 from slipping out of the second blind hole 113.
In this embodiment, a third blind hole 114 is formed in the fixed handle 11 along a direction perpendicular to the second blind hole 113, and the third blind hole 114 is communicated with the second blind hole 113.
In this embodiment, the end of the second button 32 away from the opening is connected to the bottom of the second blind hole 113 through the second spring 7, the second spring 7 is in the second blind hole 113, and the second spring 7 enables the second button 32 to reset after being pressed.
The second button 32 is provided with a triangular notch 322 in the peripheral wall of the second blind hole 113 in the direction toward the third blind hole 114.
In this embodiment, the rotation limiting mechanism 4 includes a rotation limiting rod 33 and a rotation protrusion 42, the rotation limiting rod 33 moves in the third blind hole 114 correspondingly, and a frustum 331 corresponding to the triangular notch 322 exists at one end of the bottom of the rotation limiting rod 33.
In gear, the frustum 331 is clamped in the triangular notch 322, and the inclined surface of the frustum 331 is slidably connected with the inclined surface of the triangular notch 322.
As shown in fig. 9, when the rotation limiting rod 33 cooperates with the second button 32 and the second button 32 is pressed to switch from the first gear to the second gear, the second button 32 moves into the third blind hole 114, and the inclined surface of the frustum 331 is pushed by the inclined surface of the triangular notch 322, so that the frustum 331 moves in the direction away from the second button 32 in the third blind hole 114.
The rotation limiting rod 33 is connected with the bottom of the third blind hole 114 through the third spring 8, one end of the third spring 8 is fixed at the aperture bottom of the third blind hole 114, and the third spring 8 forms opposite repulsive force between the rotation limiting rod 33 and the third blind hole 114, so that the rotation positioning rod can reset after being pressed.
One end of the rotation limiting rod 33 far away from the frustum 331 is provided with a limiting boss 332, the limiting boss 332 is fixed on one side close to the rotation handle 12, and a certain gap exists between the limiting boss and the fixed handle 11.
In this embodiment, the rotation projection 42 is fixed to the end face of the rotation handle 12 near the fixed handle 11.
The implementation principle of the embodiment of the application is as follows: in the gear, the second button 32 is not pressed, the triangular notch 322 on the second button 32 is correspondingly attached to the frustum 331 at the bottom of the rotary connecting rod, when the rotary handle 12 is kneaded until the maximum kneading angle, the distance between the limiting boss 332 and the rotary handle 12 cannot meet the insertion and clamping of the rotary lug 42, the rotary lug 42 is abutted to the limiting boss 332, and at the moment, the clamp mouth 21 cannot be completely closed; and then the second button 32 is pressed to reach the second gear, the second button 32 is pressed, the second button 32 is pushed into the second blind hole 113, the inclined surface of the triangular notch 322 on the second button 32 extrudes the inclined surface corresponding to the pushing frustum 331, the rotating connecting rod is pushed upwards, the distance between the limiting convex block and the fixed handle 11 is increased, the abutting hole 18 is formed between the limiting convex block 332 and the fixed handle 11, the rotating handle 12 is continuously kneaded, and the rotating convex block 42 rotates to the abutting hole 18 to be in clamping fit with the limiting convex block 332 to form a locking state.
The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (1)
1. A medical clip applier, which is characterized in that the handle assembly (1) comprises a fixed handle (11) and a rotary handle (12) which are hinged with each other;
the clamping assembly (2) is connected with the handle assembly (1) and is matched with the rotation of the rotating handle (12) to realize clamping or opening;
the limiting gear switching mechanism (3) is used for switching limiting gears, and the limiting gears comprise a first gear used for realizing clamping of the clamping assembly (2) and a second gear used for realizing a locking state of the clamping assembly (2); the limiting gear switching mechanism (3) comprises a second button (32), a second blind hole (113) is formed in the central axis of the end surface of the fixed handle (11), which is far away from the rotating handle (12), and is pointed to the direction of the rotating handle (12), and the second button (32) slides in the second blind hole (113) to realize the switching of a gear I and a gear II;
the rotation limiting mechanism (4) is arranged on the handle assembly (1), and the rotation limiting mechanism (4) limits the maximum rotation angle of the rotation handle (12) by a corresponding angle based on the gear selected by the limiting gear switching mechanism (3); the rotation limiting mechanism (4) comprises a rotation limiting rod (33) and a rotation lug (42), a third blind hole (114) communicated with the inside of the second blind hole (113) is formed in the fixed handle (11) along the central axis, the rotation limiting rod (33) moves in the third blind hole (114) and is correspondingly matched with the second button (32) so as to move according to the movement of the second button (32), and the rotation lug (42) is fixed on the end face, close to the fixed handle (11), of the rotation handle (12);
a triangular notch (322) is formed in the peripheral surface of the second button (32), the triangular notch (322) faces the third blind hole (114), a frustum (331) correspondingly matched with the triangular notch (322) is arranged at the bottom end of the rotation limiting rod (33), and a limiting boss (332) matched with the rotation lug (42) is formed at one end, away from the frustum (331), of the rotation limiting rod (33); the triangular notch (322) on the second button (32) is correspondingly matched with the frustum (331) on the rotation limiting rod (33) so that the second button (32) and the rotation limiting rod (33) move in a matched mode between the second blind hole (113) and the third blind hole (114);
in a second gear, the limiting boss (332) is in closed abutting joint with the fixed handle (11), the rotating handle (12) is kneaded to a maximum kneading angle, the rotating lug (42) is abutted on the limiting boss (332), in the second gear, the limiting boss (332) is far away from the fixed handle (11) to obtain an abutting hole (18) formed by a gap between the limiting boss (332) and the fixed handle (11), and the rotating lug (42) rotates to the abutting hole (18) to be in clamping fit with the limiting boss (332);
there is second spring (7) in second blind hole (113), there is third spring (8) in third blind hole (114), the one end fixed connection of second spring (7) is in the aperture bottom of second blind hole (113), the one end that second blind hole (113) bottom was kept away from to second spring (7) is connected the bottom of second button (32), the one end fixed connection of third spring (8) is in the aperture bottom of third blind hole (114), the one end that third blind hole (114) bottom was kept away from to the spring is connected the one end that frustum (331) was kept away from to rotation gag lever post (33).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311576901.0A CN117338369B (en) | 2023-11-23 | 2023-11-23 | Medical clip applier |
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| CN202311576901.0A CN117338369B (en) | 2023-11-23 | 2023-11-23 | Medical clip applier |
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| CN117338369B true CN117338369B (en) | 2024-04-02 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN117338369A (en) | 2024-01-05 |
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