A continuous ligation clip

Abstract

The present application relates to a continuous ligation clamp, which comprises at least a clamp tube pre-installed with a ligation clamp, a hand-held portion, a wrench, and a status feedback device. The status feedback device comprises an arc-shaped touch plate, a reset base plate, a fixed swing arm, and a sliding swing arm. When the fixed swing arm moves forward with the wrench, the sliding swing arm is squeezed by the arc-shaped touch plate to achieve a completely bottomed state. When it moves to the front extreme position, the sliding swing arm reaches a completely popped-out state. When the fixed swing arm moves backward with the wrench, the sliding swing arm passes through the gap between a pair of arc-shaped touch plates. When it moves to the rear end, the sliding swing arm is squeezed by the reset base plate to achieve a retracted and locked state. In the continuous ligation clamp described in this case, the sliding swing arm maintains contact with the arc-shaped touch plate and slides along the arc-shaped touch plate when it is completely bottomed out. Corresponding damping is generated between the two to provide the user with clear force feedback.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a continuous hair ligation clip. Background Art

[0002] When performing surgery with a ligation clamp, a continuous ligation clamp is required. A continuous ligation clamp is pre-installed in a clamp barrel. A wrench is located within the handle to actuate the clamp. When the wrench is grasped, a drive mechanism within the barrel actuates the clamp to perform the surgery. During the wrench's movement, the clamp passes through a critical point: the clamp moves from the barrel to the jaws and opens to its maximum angle. At this point, the continuous ligation clamp should provide sufficient feedback to alert the user. Otherwise, if this critical point is missed, the clamp will begin to close, potentially causing the clamp opening to be too small to clamp the blood vessel.

[0003] The prior art has disclosed some preliminary designs. Application No. 201920433577X, patent name "A patent with state feedback function" records the following scheme: damping is generated when the guide column and the positioning protrusion at its end slide on the inner wall of the guide rail. However, the above scheme has the following problems: the guide rail is thin, because its guide column and positioning protrusion must slide on the inside of the guide rail during the upward stage (the guide column elastically deforms and bends to allow it to slide smoothly into the inside of the guide rail), and after it pops out from the upper end of the guide rail, the positioning protrusion can only go down from the outside of the guide rail (when the guide column is fully straightened, it is larger than the outer diameter of the guide rail). Due to the limited elastic deformation of the guide column, the thickness of the guide rail is very limited, and the above structure is very easy to fail after repeated use.

[0004] Therefore, it is necessary to design a new state feedback device that can be used multiple times and a continuous ligation clamp with the same. Summary of the Invention

[0005] A continuous ligation clip comprises at least a clip applier tube pre-installed with a ligation clip, a handheld portion, a wrench hinged to the left side of the handheld portion, and a status feedback device, wherein the status feedback device comprises:

[0006] There are two arc-shaped touch panels, one at the upper end and one at the lower end of the handheld portion;

[0007] A reset base plate is provided in the handheld portion and is located behind the arc-shaped touch plate;

[0008] A fixed swing arm is provided on the right side of the wrench; the fixed swing arm includes a rectangular swing arm base, a swing arm inner cavity provided on the right side of the swing arm base, a spring slot provided on the lower edge of the swing arm inner cavity, a pop-up compression spring provided in the spring slot, and a limit plug provided on the right side below the swing arm inner cavity;

[0009] A sliding swing arm is slidably disposed within the fixed swing arm; the sliding swing arm includes a telescopic base slidably disposed within the inner cavity of the swing arm, a receiving notch disposed on the left side above the telescopic base, a limit slot disposed on the right side of the lower end of the telescopic base and cooperating with a limit plug, a telescopic thin shaft disposed on the right side of the telescopic thin shaft, an end stop rod disposed on the right side of the telescopic thin shaft, and a spring stop plate disposed below the telescopic base and inserted into the spring slot, wherein the spring stop plate is located on the right side of the pop-up compression spring;

[0010] When the fixed swing arm moves forward with the wrench, the sliding swing arm is squeezed by the arc-shaped touch plate to achieve a complete bottoming state, and when it moves to the front limit position, the sliding swing arm reaches a fully popped-out state;

[0011] When the fixed swing arm moves backward with the wrench, the sliding swing arm passes through the gap between a pair of arc-shaped touch plates. When it moves to the rear end, the sliding swing arm is squeezed by the reset bottom plate to achieve a retracted locking state.

[0012] As a further implementation:

[0013] The continuous ligation clamp further comprises:

[0014] A fixed lock head is provided on the left side above the inner cavity of the swing arm, and a fixed inclined plane is provided on the right side of the fixed lock head, which is inclined from the upper right to the lower left;

[0015] The sliding unlocker includes a spring insertion hole arranged laterally above the swing arm base, a lower through hole arranged on the left side of the lower end of the spring insertion hole, an unlocking compression spring arranged on the right half of the spring insertion hole, a spring stopper slidably arranged on the left half of the spring insertion hole, a sliding clamping body arranged below the spring stopper and passing through the lower through hole, and an unlocking inclined surface inclined from the upper left to the lower right on the left side of the sliding clamping body;

[0016] The spring-loaded lock comprises a spring-loaded longitudinal cavity provided in the telescopic base, a spring-loaded opening provided on the left side of the upper end of the spring-loaded longitudinal cavity, a bottom insert provided at the lower end of the spring-loaded longitudinal cavity, a lock compression spring provided at the bottom of the inner cavity of the bottom insert, a lock slider slidably provided in the spring-loaded longitudinal cavity, a lock body provided at the upper end of the lock slider and passing through the spring-loaded opening, a lock inclined surface inclined from the upper right to the lower left provided on the left side of the lock body, a guide socket formed at the lower end of the lock slider and sleeved on the outer edge of the bottom insert, a spring core rod provided at the lower end of the lock slider and inserted into the inner cavity of the bottom insert, wherein the spring core rod abuts against the upper part of the lock compression spring;

[0017] The resistance adjusting device includes a rotation-stopping side hole arranged on the right side above the spring insertion hole, a narrow-diameter through hole arranged on the right side of the spring insertion hole, a rotating core shaft rotatably arranged in the narrow-diameter through hole, a rotating terminal arranged on the right side of the rotating core shaft, a rotating inner disk arranged on the left side of the rotating core shaft, an externally threaded rod arranged on the left side of the rotating inner disk, an internally threaded barrel screwed on the externally threaded rod, and a rotation-stopping plug arranged above the internally threaded barrel and passing through the rotation-stopping side hole.

[0018] Beneficial effects;

[0019] The continuous ligation clamp described in this case has a sliding swing arm of a state feedback device that can cycle between a retracted locked state, a fully bottomed state, and a fully popped-out state. Compared with the existing solution that purely relies on the elastic deformation of the guide column, the state feedback device in this case has a greatly increased telescopic range, thereby allowing the thickness of the arc-shaped touch plate to be greatly increased, and the structural strength is more stable.

[0020] The multi-action ligation clamp described in this case, when its sliding arm fully bottoms out, maintains contact with and slides along the curved contact plate, generating corresponding damping between the two, providing the user with clear force feedback. Furthermore, when the locking groove engages the end stop lever of the sliding arm, a crisp click and a momentary click sensation are produced, clearly reminding the user that the wrench has reached a critical point.

[0021] In the continuous ligation clamp described in this case, the reset base plate can assist the sliding swing arm of the status feedback device to perform initial retraction and reach a retraction locking state. In this state, the distal end of the sliding swing arm cooperates with the guide slope, and the guide slope can squeeze the sliding swing arm to a completely bottoming state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of an embodiment of the continuous hair ligation clip.

[0023] Figure 2 It is a cross-sectional view of the first state of the continuous ligation clip.

[0024] Figure 3 It is a cross-sectional view of the continuous ligation clip in the second state.

[0025] Figure 4 It is a cross-sectional view of the continuous ligation clamp in the third state.

[0026] Figure 5 4 is a cross-sectional view of the continuous ligation clamp in the fourth state.

[0027] Figure 6 4 is a cross-sectional view of the continuous ligation clamp in the fifth state.

[0028] Figure 74 is a cross-sectional view of the continuous ligation clamp in the sixth state.

[0029] Figure 8 is a cross-sectional view of the state feedback device in the first state.

[0030] Figure 9 is a cross-sectional view of the state feedback device in the second state.

[0031] Figure 10 is a cross-sectional view of the state feedback device in the third state.

[0032] Figure 11 is a cross-sectional view of the state feedback device in the fourth state.

[0033] Figure 12 is a cross-sectional view of the state feedback device in the fifth state.

[0034] Figure 13 It is a cross-sectional view of an embodiment of the fixed swing arm.

[0035] Figure 14 It is a cross-sectional view of an embodiment of the sliding swing arm.

[0036] In the picture:

[0037] 91. Clip applier tube, 92. Handle, 93. Wrench, 94. Status feedback device;

[0038] 8. Arc-shaped touch panel, 81. Guide slope, 82. Locking groove;

[0039] 7. Reset the base plate;

[0040] 6. Fixed swing arm, 61. Swing arm base, 62. Swing arm inner cavity, 63. Spring slot, 64. Pop-up compression spring, 65. Limiting plug, 66. Swing arm notch;

[0041] 5. Sliding swing arm, 51. Telescopic base, 52. Accommodating cutout, 53. Limiting slot, 54. Telescopic thin shaft, 55. End stop rod;

[0042] 4.Fix the lock head, 41.Fix the bevel;

[0043] 3. Sliding unlocker, 31. Spring jack, 32. Lower through hole, 33. Unlocking compression spring, 34. Spring stopper, 35. Sliding clamp, 36. Unlocking ramp;

[0044] 2. Spring-loaded lock, 21. Spring-loaded longitudinal cavity, 22. Spring-loaded opening, 23. Bottom insert, 24. Lock spring, 25. Lock slider, 26. Lock body, 27. Lock bevel, 28. Guide socket, 29. Spring core rod;

[0045] 1. Resistance adjustment device, 11. Anti-rotation side hole, 12. Narrow-diameter through hole, 13. Rotating mandrel, 14. Rotating terminal, 15. Rotating inner disk, 16. Externally threaded rod, 17. Internally threaded barrel, 18. Anti-rotation plug. DETAILED DESCRIPTION

[0046] A continuous ligation clip includes at least a clip applier tube 91 pre-installed with a ligation clip, a handle 92, a wrench 93 hinged to the left side of the handle 92, and a status feedback device 94. The status feedback device 94 includes:

[0047] There are two arc-shaped touch panels 8, one at the upper end and one at the lower end of the hand-held portion 92;

[0048] The reset base plate 7 is provided in the handle portion 92 and is located behind the arc-shaped touch plate 8;

[0049] The fixed swing arm 6 is provided on the right side of the wrench 93; the fixed swing arm 6 includes a rectangular swing arm base 61, a swing arm inner cavity 62 provided on the right side of the swing arm base 61, a spring slot 63 provided on the lower edge of the swing arm inner cavity 62, a pop-up compression spring 64 provided in the spring slot 63, and a limit block 65 provided on the right side below the swing arm inner cavity 62;

[0050] The sliding swing arm 5 is slidably disposed within the fixed swing arm 6; the sliding swing arm 5 includes a telescopic base 51 slidably disposed within the swing arm inner cavity 62, a receiving cutout 52 disposed on the upper left side of the telescopic base 51, a limiting slot 53 disposed on the right side of the lower end of the telescopic base 51 and cooperating with a limiting insert 65, a telescopic thin shaft 54 ​​disposed on the right side of the telescopic thin shaft 51, an end stop rod 55 disposed on the right side of the telescopic thin shaft 54, and a spring baffle 56 disposed below the telescopic base 51 and inserted into the spring slot 63, wherein the spring baffle 56 is located on the right side of the pop-up compression spring 64;

[0051] When the fixed swing arm 6 moves forward with the wrench 93, the sliding swing arm 5 is squeezed by the arc-shaped touch plate 8 to achieve a completely bottomed state. When it moves to the front limit position, the sliding swing arm 5 reaches a completely popped-out state.

[0052] When the fixed swing arm 6 moves backward with the wrench 93, the sliding swing arm 5 passes through the gap between a pair of arc-shaped touch plates 8. When it moves to the rear end, the sliding swing arm 5 is squeezed by the reset base plate 7 to achieve a retracted locking state.

[0053] As a further implementation:

[0054] The continuous ligation clamp further comprises:

[0055] The fixed lock head 4 is arranged on the left side above the swing arm inner cavity 62, and a fixed inclined surface 41 is also provided on the right side of the fixed lock head 4, which is inclined from the upper right to the lower left;

[0056] The sliding unlocker 3 includes a spring insertion hole 31 disposed laterally above the swing arm base 61, a lower through hole 32 disposed on the left side of the lower end of the spring insertion hole 31, an unlocking compression spring 33 disposed in the right half of the spring insertion hole 31, a spring stopper 34 slidably disposed in the left half of the spring insertion hole 31, a sliding clamp 35 disposed below the spring stopper 34 and extending through the lower through hole 32, and an unlocking slope 36 disposed on the left side of the sliding clamp 35 and inclined from the upper left to the lower right.

[0057] The spring-loaded lock 2 includes a spring-loaded longitudinal cavity 21 provided in the telescopic base 51, a spring-loaded opening 22 provided on the left side of the upper end of the spring-loaded longitudinal cavity 21, a bottom insert 23 provided at the lower end of the spring-loaded longitudinal cavity 21, a lock compression spring 24 provided at the bottom of the inner cavity of the bottom insert 23, a lock slider 25 slidably provided in the spring-loaded longitudinal cavity 21, a lock body 26 provided at the upper end of the lock slider 25 and passing through the spring-loaded opening 22, a lock inclined surface 27 inclined from the upper right to the lower left provided on the left side of the lock body 26, a guide socket 28 formed at the lower end of the lock slider 25 and sleeved on the outer edge of the bottom insert 23, a spring core rod 29 provided at the lower end of the lock slider 25 and inserted into the inner cavity of the bottom insert 23, and the spring core rod 29 abuts against the top of the lock compression spring 24;

[0058] The resistance adjusting device 1 includes a rotation-stopping side hole 11 provided on the right side above the spring insertion hole 31, a narrow-diameter through hole 12 provided on the right side of the spring insertion hole 31, a rotating core shaft 13 rotatably provided in the narrow-diameter through hole 12, a rotating terminal 14 provided on the right side of the rotating core shaft 13, a rotating inner disk 15 provided on the left side of the rotating core shaft 13, an externally threaded rod 16 provided on the left side of the rotating inner disk 15, an internally threaded barrel 17 screwed on the externally threaded rod 16, and a rotation-stopping plug 18 provided above the internally threaded barrel 17 and passing through the rotation-stopping side hole 11.

[0059] As a further implementation:

[0060] A swing arm notch 66 for accommodating a rotating terminal is formed above the right end surface of the fixed swing arm 6 .

[0061] As a further implementation:

[0062] The upper and lower ends of the end stopper 55 are flush with the upper and lower ends of the swing arm base 61 respectively;

[0063] The longitudinal dimension of the end stopper 55 is larger than the gap between the pair of arc-shaped contact plates 8;

[0064] The longitudinal dimension of the telescopic thin shaft 54 ​​is smaller than the gap between the pair of arc-shaped contact plates 8 .

[0065] As a further implementation:

[0066] A guide slope 81 sloping from the upper left to the lower right is provided at the lower edge of the arc-shaped touch panel 8 , and a locking groove 82 for locking the end stopper 55 is provided at the upper left side of the arc-shaped touch panel 8 .

[0067] As a further implementation:

[0068] The inner arc surface of the arc-shaped touch plate 8 is densely covered with micro-small teeth.

[0069] The sliding swing arm 5 of the continuous ligation clamp described in this case can cycle between a retracted locked state p, a fully bottomed state q, and a fully popped-out state r:

[0070] Retraction lock state p:

[0071] See the instructions attached Figure 8 、 9 , press the sliding swing arm 5 to make it slide to the left, overcoming the damping of the pop-up compression spring 64, until the fixed inclined surface 41 squeezes the lock body 26 to make it overcome the damping of the lock compression spring 24 and move downward, until the lock body 26 passes the fixed inclined surface 41 and is locked on the left side of the fixed lock 4;

[0072] Complete bottoming state q:

[0073] See the instructions attached Figure 10 , continue to press the sliding swing arm 5 to move it to the left, so that the spring lock head 2 passes over the sliding clamp body 35 and the unlocking slope 36, and the sliding swing arm 5 is directly inserted into the leftmost side of the fixed swing arm 62;

[0074] Fully popped state r:

[0075] Reference Manual Figure 11 、 12 After stopping pressing, the pop-up compression spring 64 drives the sliding swing arm 5 to pop out to the right, and the lock body 26 drives the spring stopper 34, the sliding clamping body 35, and the unlocking inclined surface 36 to overcome the damping of the spring stopper 33 and move to the right until it abuts against the fixed lock head 4 and is locked. The lock body 26 continues to move to the right with the sliding swing arm 5, and the unlocking inclined surface 36 squeezes the lock body 26 to overcome the damping of the lock spring 24 and move downward until the lock body 26 continuously passes the unlocking inclined surface 36 and the fixed inclined surface 41 and pops out completely.

[0076] It should be noted that the elastic force of the pop-up compression spring 64 is much greater than the elastic force of the lock head compression spring 24 , and the elastic force of the lock head compression spring 24 is much greater than the elastic force of the unlocking compression spring 33 .

[0077] The fixed swing arm 6 and the sliding swing arm 5 move as follows during the cycle of swinging with the wrench 93:

[0078] As the instruction manual Figure 2 As shown, the sliding swing arm 5 is in the retracted locking state p;

[0079] As the instruction manual Figure 3 As shown, pressing the wrench 93 backward drives the fixed swing arm 6 and the sliding swing arm 5 upward, and the guide inclined surface 81 squeezes the sliding swing arm 5 to make it continue to retract, reaching the completely bottomed state q;

[0080] Since the sliding swing arm 5 and the fixed swing arm 6 are rigidly connected at this time, and the end stop rod 55 of the sliding swing arm 5 abuts against the inner walls of the upper and lower arc-shaped touch plates 8 to generate stable damping, when the end stop rod 55 slides into the locking groove 82, the clicking sound and instantaneous jamming feeling generated can remind the user.

[0081] As the instruction manual Figure 4 、 5 As shown:

[0082] After the sliding swing arm 5 passes the arc-shaped touch plate 8, it loses the source of the squeezing force and pops out to reach the fully popped-out state r;

[0083] The telescopic thin shaft 54 ​​is smaller in the longitudinal direction than the end stopper 55, so that it can slide downward through the longitudinal gap between the pair of arc-shaped contact plates 8;

[0084] As the instruction manual Figure 6 、 7 As shown:

[0085] The fixed swing arm 6 and the sliding swing arm 5 continue to swing downward, and the sliding swing arm 5 is squeezed and retracted by the reset base plate 7;

[0086] The sliding swing arm 5 reaches the retracted state p.

Claims

1. A continuous ligation clip comprising at least a clip applicator tube (91) pre-installed with a ligation clip, a hand-held portion (92), and a wrench (93) hinged to the left side of the hand-held portion (92), characterized in that: The system further comprises a state feedback device (94), wherein the state feedback device (94) comprises: There are two arc-shaped touch panels (8), one arc-shaped touch panel (8) is provided at the upper end and the other at the lower end of the hand-held portion (92); A reset base plate (7) is provided in the handheld portion (92) and is located behind the arc-shaped touch plate (8); A fixed swing arm (6) is located on the right side of the wrench (93); A sliding swing arm (5) is slidably arranged in the fixed swing arm (6); When the fixed swing arm (6) moves forward with the wrench (93), the sliding swing arm (5) is squeezed by the arc-shaped touch plate (8) to achieve a completely bottomed state, and when the sliding swing arm (5) moves to the front extreme position, it reaches a completely popped-out state; When the fixed swing arm (6) moves backward along with the wrench (93), the sliding swing arm (5) passes through the gap between the pair of arc-shaped touch plates (8), and when the sliding swing arm (5) moves to the rear end, it is squeezed by the reset base plate (7) to achieve a retracted locking state; The fixed swing arm (6) comprises a swing arm base (61) in a rectangular shape, a swing arm inner cavity (62) provided on the right side of the swing arm base (61), a spring slot (63) provided on the lower edge of the swing arm inner cavity (62), a pop-up compression spring (64) provided in the spring slot (63), and a limiting plug (65) provided on the right side below the swing arm inner cavity (62); The sliding swing arm (5) comprises a telescopic base (51) slidably arranged in the inner cavity (62) of the swing arm, an accommodating notch (52) arranged on the left side above the telescopic base (51), a limiting slot (53) arranged on the right side of the lower end of the telescopic base (51) and cooperating with a limiting plug (65), a telescopic thin shaft (54) arranged on the right side of the telescopic thin shaft (51), an end stop rod (55) arranged on the right side of the telescopic thin shaft (54), and a spring baffle (56) arranged below the telescopic base (51) and inserted into the spring slot (63), wherein the spring baffle (56) is located on the right side of the pop-up compression spring (64).

2. The continuous hair ligation clamp according to claim 1, characterized in that: Also includes: A fixed lock head (4) is provided on the left side above the swing arm inner cavity (62), and a fixed inclined plane (41) is also provided on the right side of the fixed lock head (4) and tilted from the upper right to the lower left; The sliding unlocker (3) comprises a spring insertion hole (31) arranged above the swing arm base (61) in the transverse direction, a lower through hole (32) arranged on the left side of the lower end of the spring insertion hole (31), an unlocking compression spring (33) arranged on the right half of the spring insertion hole (31), a spring stopper (34) slidably arranged on the left half of the spring insertion hole (31), a sliding clamp (35) arranged below the spring stopper (34) and passing through the lower through hole (32), and an unlocking inclined surface (36) inclined from the upper left to the lower right and arranged on the left side of the sliding clamp (35); The spring lock (2) comprises a spring longitudinal cavity (21) provided in the telescopic base (51), a spring opening (22) provided on the left side of the upper end of the spring longitudinal cavity (21), a bottom insert (23) provided at the lower end of the spring longitudinal cavity (21), a lock compression spring (24) provided at the bottom of the inner cavity of the bottom insert (23), a lock slider (25) slidably provided in the spring longitudinal cavity (21), a spring opening (22) provided at the upper end of the lock slider (25) and passing through the spring opening A lock body (26) is provided at the opening (22), a lock inclined surface (27) is provided on the left side of the lock body (26) and is inclined from the upper right to the lower left, a guide plug hole (28) is formed at the lower end of the lock slider (25) and is sleeved with the outer edge of the bottom plug tube (23), and a spring core rod (29) is provided at the lower end of the lock slider (25) and inserted into the inner cavity of the bottom plug tube (23), and the spring core rod (29) is abutted against the top of the lock compression spring (24).

3. The continuous hair ligation clamp according to claim 2, characterized in that: Also includes: A resistance adjusting device (1) comprises a rotation-stopping side hole (11) provided on the right side above a spring insertion hole (31), a narrow diameter through hole (12) provided on the right side of the spring insertion hole (31), a rotating core shaft (13) rotatably provided in the narrow diameter through hole (12), a rotating terminal (14) provided on the right side of the rotating core shaft (13), a rotating inner disk (15) provided on the left side of the rotating core shaft (13), an externally threaded rod (16) provided on the left side of the rotating inner disk (15), an internally threaded barrel (17) screwed onto the externally threaded rod (16), and a rotation-stopping plug (18) provided above the internally threaded barrel (17) and passing through the rotation-stopping side hole (11).

4. The continuous hair ligation clamp according to claim 3, characterized in that: A swing arm notch (66) for accommodating a rotating terminal is formed above the right end surface of the fixed swing arm (6).

5. The continuous hair ligation clamp according to claim 4, characterized in that: The upper and lower ends of the end stopper (55) are flush with the upper and lower ends of the swing arm base (61) respectively; The longitudinal dimension of the end blocking rod (55) is larger than the gap between the pair of arc-shaped contact plates (8); The longitudinal dimension of the telescopic thin shaft (54) is smaller than the gap between the pair of arc-shaped touch plates (8).

6. The continuous hair ligation clamp according to claim 5, characterized in that: The lower edge of the arc-shaped touch plate (8) is provided with a guide slope (81) inclined from the upper left to the lower right, and the upper left side of the arc-shaped touch plate (8) is provided with a locking groove (82) for locking the end stop rod (55).

7. The continuous hair ligation clamp according to claim 6, characterized in that: The inner arc surface of the arc-shaped touch plate (8) is densely covered with micro-small teeth.

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