Segmented control multifunctional ratchet structure and clip applier provided with the same
By using a segmented control multi-functional ratchet structure and a position prompting mechanism, the problem of automatic opening of plastic tissue clips is solved, and clear prompts for clamping points are provided to ensure the accuracy and convenience of surgical operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HANGZHOU KANGJI MEDICAL INSTR
- Filing Date
- 2023-07-27
- Publication Date
- 2026-05-15
AI Technical Summary
In existing technologies, plastic tissue clips tend to automatically spring open when they are pushed out to the position of the clamping forceps, which makes surgical operations inconvenient and lacks clear clamping point indications, requiring medical staff to rely on their experience to make judgments.
Design a segmented control multi-functional ratchet structure. The clamping node is marked by the engagement or disengagement of the position indication mechanism with the first and second ends. The design of pawls with different spring force values and waist holes provides clear audible prompts to ensure accurate judgment of the clamping process.
This enables accurate identification of clamping points during surgical procedures, reduces repositioning resistance, and improves the convenience and reliability of the operation.
Smart Images
Figure CN116831686B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of medical device accessories technology, and particularly relates to a segmented control multifunctional ratchet structure and an applicator with the same structure. Background Technology
[0002] A tissue clip is a surgical instrument used to clamp tissue clips during surgical procedures. Tissue clips are typically made of metal, such as titanium clips, but can also be made of other materials, such as plastic clips. To clamp a tissue clip, the clip must first be pushed out of the clipper, and then the clip head is used to close the clip to achieve a hold. However, some tissue clips, such as those made of plastic, exhibit a significant automatic spring-back motion when pushed out to the clipper head, which can be inconvenient for medical personnel during surgical procedures.
[0003] To address this issue, the applicant previously proposed a step-by-step feeding technical solution, as detailed in Chinese Invention Patent No. 202111376475.7, which discloses a step-by-step feeding mechanism for a continuous-fire clamp. This invention uses a two-step clamping method to clamp the ligation clip, preventing it from automatically opening during ejection. One of the components that facilitates this step-by-step clamping is an irregularly shaped cam control mechanism. The applicant has disclosed a cam control mechanism for a continuous-fire clamp in Chinese Invention Patent No. 202111375725.5. While the cam control mechanism provided in this patent can facilitate the step-by-step clamping action, the applicant found in actual use that the entire two-step clamping process is very uniform, lacking a clear indication of the completion of the first and second clamping steps, requiring medical personnel to rely on their experience to determine the appropriate clamping points. Summary of the Invention
[0004] The purpose of this invention is to address the above-mentioned problems by providing a segmented control multi-functional ratchet structure that facilitates accurate judgment of the clamping process.
[0005] Another objective of this invention is to address the aforementioned problems by providing a clamp applicator equipped with a segmented control multi-functional ratchet structure that facilitates accurate judgment of the clamping process.
[0006] To achieve the above objectives, the present invention adopts the following technical solutions:
[0007] The segmented control multi-functional ratchet structure includes a ratchet body connected to a trigger. A position indication mechanism is provided on one side of the ratchet body. A first end and a second end are provided on the side of the ratchet body near the position indication mechanism. Rotating the trigger can cause the first end and the second end to press onto the position indication mechanism one after the other and disengage from the position indication mechanism one after the other.
[0008] In the above-mentioned segmented control multi-functional ratchet structure, the first end includes a plurality of sequentially arranged sawtooth structures.
[0009] In the above-mentioned segmented control multi-functional ratchet structure, the second end includes a first stepped surface and a second stepped surface extending outside the first stepped surface. The first stepped surface and the second stepped surface are connected by a limiting surface. Rotating the trigger can cause the side of the position indication mechanism to press against the first stepped surface and the second stepped surface in succession.
[0010] In the above-mentioned segmented control multi-functional ratchet structure, when the position indication mechanism is pressed against the second step surface, the end of the position indication mechanism is in contact with the limiting surface.
[0011] In the above-mentioned segmented control multi-functional ratchet structure, the ratchet body includes an upper plate and a lower plate stacked on top of each other. The upper plate and the lower plate are fixedly connected, and the lower plate is connected to the trigger. The second end is located at one end of the upper plate, and the first end is located at one end of the lower plate.
[0012] In the above-mentioned segmented control multi-functional ratchet structure, the position prompting mechanism includes a first mounting rod and a second mounting rod, which are arranged parallel to each other. The position prompting mechanism also includes a first prompting component and a second prompting component, both of which are connected to the mounting rod. The first prompting component is located below the second prompting component. Rotating the trigger can press the first prompting component onto the first end and the second prompting component onto the second end.
[0013] In the above-mentioned segmented control multi-functional ratchet structure, the first prompting component includes a first tension spring, one end of the first tension spring is connected to the second mounting rod, and the other end is connected to the first pawl. The first pawl is sleeved on the first mounting rod and rotatably connected to the first mounting rod. The end of the first pawl away from the first tension spring cooperates with the first end.
[0014] The second prompting component includes a second tension spring, one end of which is connected to a second mounting rod and the other end of which is connected to a second pawl. The second pawl is sleeved on the first mounting rod and rotatably connected to the first mounting rod. The end of the second pawl away from the second tension spring engages with the second end.
[0015] In the above-mentioned segmented control multi-functional ratchet structure, the spring force of the second tension spring is greater than that of the first tension spring.
[0016] In the above-mentioned segmented control multi-functional ratchet structure, one end of the second pawl is provided with a waist hole, and one end of the second tension spring is hooked into the waist hole.
[0017] A clamp applicator includes a housing, with a trigger rotatably connected to the housing, characterized in that: the housing is further provided with the aforementioned segmented control multi-functional ratchet structure, one end of which is connected to a push rod for pushing the ligation clamp.
[0018] Compared with existing technologies, the advantages of this invention are:
[0019] 1. The present invention uses a prompting mechanism to indicate whether the clamping mechanism engages with or disengages from the first and second ends in sequence, thereby identifying important clamping points and facilitating accurate judgment of the clamping process by medical personnel during use.
[0020] 2. The present invention provides a waist hole at the second pawl, thereby reducing the stretching length required for the second tension spring during the reset process, thereby reducing the resistance generated and ensuring smooth reset. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the internal structure of the clamp applicator;
[0022] Figure 2 This is a schematic diagram of a ratchet structure;
[0023] In the figure: trigger 1, ratchet body 2, position indication mechanism 3, first end 4, second end 5, upper plate 21, lower plate 22, first mounting rod 31, second mounting rod 32, first indication component 33, second indication component 34, first step surface 51, second step surface 52, limiting surface 53, outer shell 100, push rod 200, first tension spring 331, first pawl 332, second tension spring 341, second pawl 342, waist hole 343. Detailed Implementation
[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0025] Example 1
[0026] This embodiment provides a segmented control multi-functional ratchet structure, combined with... Figure 1 and Figure 2 As shown, the ratchet body 2 is connected to the trigger 1. A position indication mechanism 3 is provided on one side of the ratchet body 2. A first end 4 and a second end 5 are provided on the side of the ratchet body 2 near the position indication mechanism 3. Rotating the trigger 1 can cause the first end 4 and the second end 5 to press onto the position indication mechanism 3 one after the other and disengage from the position indication mechanism 3 one after the other.
[0027] In this invention, the initial state is denoted as state a0. During use, rotating trigger 1 causes the ratchet body 2 to rotate synchronously, engaging the first end 4 with the position indicator mechanism 3. Continuing to rotate trigger 1 until the position indicator mechanism 3 engages with the second end 5 is denoted as state a1, corresponding to the completion of the first clamping step. The engagement of the position indicator mechanism 3 and the second end 5 produces a special prompt, such as a special sound. Continuing to rotate trigger 1 until the position indicator mechanism 3 disengages from the second end 5 is denoted as state a2, corresponding to the completion of the second clamping step. Therefore, this invention uses the sequential engagement or disengagement of the indicator mechanism 3 with the first end 4 and the second end 5 to mark important clamping points, facilitating accurate judgment of the clamping process by medical personnel during use.
[0028] The first end portion 4 includes a plurality of sequentially arranged serrated structures 41. The second end portion 5 includes a first stepped surface 51 and a second stepped surface 52 extending outside the first stepped surface 51. The first stepped surface 51 and the second stepped surface 52 are connected by a limiting surface 53. Rotating the trigger 1 causes the side of the position indication mechanism 3 to press successively onto the first stepped surface 51 and the second stepped surface 52. Figure 2 As shown, during the rotation of the trigger 1, the side of the position indication mechanism 3 first abuts against the first step surface 51. After rotating through an angle, the side of the position indication mechanism 3 disengages from the first step surface 51 and quickly presses down onto the second step surface 52, while emitting a relatively obvious knocking vibration sound, indicating that the clamp applicator is in state a1 at this time.
[0029] Preferably, when the position indication mechanism 3 is pressed against the second step surface 52, the end of the position indication mechanism 3 is in contact with the limiting surface 53. This makes the cooperation between the position indication mechanism 3 and the second end 5 more reliable, and the clamping device is relatively stable in state a1.
[0030] like Figure 2 As shown, the ratchet body 2 includes an upper plate 21 and a lower plate 22 stacked vertically. The upper plate 21 and the lower plate 22 are fixedly connected, and the lower plate 22 is connected to the trigger 1. The second end 5 is located at one end of the upper plate 21, and the first end 4 is located at one end of the lower plate 22. The staggered arrangement of the first end 4 and the second end 5 effectively avoids interference during use.
[0031] like Figure 2As shown, the position prompting mechanism 3 includes a first mounting rod 31 and a second mounting rod 32, which are arranged parallel to each other. The position prompting mechanism 3 also includes a first prompting component 33 and a second prompting component 34, which are both connected to the mounting rods 31 and 32. The first prompting component 33 is located below the second prompting component 34. Rotating the trigger 1 can press the first prompting component 33 onto the first end 4 and the second prompting component 34 onto the second end 5.
[0032] Specifically, the first prompting component 33 includes a first tension spring 331, one end of which is connected to the second mounting rod 32, and the other end is connected to the first pawl 332. The first pawl 332 is sleeved on the first mounting rod 31 and rotatably connected to the first mounting rod 31. The end of the first pawl 332 away from the first tension spring 331 cooperates with the first end 4. The second prompting component 34 includes a second tension spring 341, one end of which is connected to the second mounting rod 32, and the other end is connected to the second pawl 342. The second pawl 342 is sleeved on the first mounting rod 31 and rotatably connected to the first mounting rod 31. The end of the second pawl 342 away from the second tension spring 341 cooperates with the second end 5.
[0033] In use, the first pawl 332 first engages with the serrated structure on the first end 4. The serrated structure is dense and relatively uniform, and the spring force of the first tension spring 331 is relatively small. Therefore, the sound generated during the process from a0 to a1 is weakened. Until the side of the second pawl 342 first abuts against the first step surface 51, after rotating through an angle, the side of the position indicator mechanism 3 disengages from the first step surface 51 and quickly presses down onto the second step surface 52, reaching state a1, and at the same time, a more obvious knocking vibration sound is emitted. Continuing to turn the trigger 1, the second step surface 52 drives the second pawl 342 to rotate around the first mounting rod 31. After rotating to the limit position, the second step surface 52 and the second pawl 342 separate from each other, and the second tension spring 341 quickly retracts, producing a noticeable tension spring vibration warning sound, at which point state a2 is reached.
[0034] Preferably, the spring force of the second tension spring 341 is greater than that of the first tension spring 331. This way, when the second pawl 342 separates from the second end 5 at state a2, causing the second tension spring 341 to retract rapidly, a distinct spring vibration warning sound can be produced.
[0035] Preferably, one end of the second pawl 342 is provided with a waist hole 343, and one end of the second tension spring 341 is hooked into the waist hole 343. The present invention provides a waist hole 343 at the second pawl 342, thereby reducing the required elongation length of the second tension spring 341 during the reset process. Especially when the second tension spring 341 is a tension spring with a large spring force, it can effectively reduce the resistance generated by the second tension spring 341, ensuring smooth reset.
[0036] The working principle of this invention is as follows: Initially, in state a0, when in use, turning trigger 1 causes the upper plate 21 and lower plate 22 to rotate synchronously. This causes the first pawl 332 to engage with the serrated structure on the first end 4. The serrated structure is dense and relatively uniform, and the spring force of the first tension spring 331 is relatively small. Therefore, the sound generated during the transition from a0 to a1 is weakened. This continues until the side of the second pawl 342 first abuts against the first step surface 51. After rotating through an angle, the side of the position indicator mechanism 3 disengages from the first step surface 51 and quickly presses down onto the second step surface 52, reaching state a1, while simultaneously emitting a noticeable knocking vibration sound. Continuing to turn trigger 1, the second step surface 52 causes the second pawl 342 to rotate around the first mounting rod 31. After rotating to its limit position, the second step surface 52 separates from the second pawl 342, and the second tension spring 341 quickly retracts, producing a noticeable tension spring vibration sound, at which point state a2 is reached, and the clamping is complete. The trigger 1 is rotated in the opposite direction to the clamping process to achieve reset. Therefore, the present invention uses the indicator mechanism 3 to indicate the engagement or disengagement of the first end 4 and the second end 5 in sequence to mark the more important clamping points, so as to facilitate medical staff to accurately judge the clamping process during use.
[0037] Example 2
[0038] This embodiment provides an applicator, such as... Figure 1 As shown, it includes an outer shell 100, a trigger 1 rotatably connected to the outer shell 100, and the outer shell 100 is also provided with a segmented control multi-functional ratchet structure described in Embodiment 1. One end of the segmented control multi-functional ratchet structure is connected to a push rod 200 for pushing the ligation clip.
[0039] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.
[0040] Although this document frequently uses terms such as trigger 1, ratchet body 2, position indication mechanism 3, first end 4, second end 5, upper plate 21, lower plate 22, first mounting rod 31, second mounting rod 32, first indication component 33, second indication component 34, first step surface 51, second step surface 52, limiting surface 53, outer shell 100, push rod 200, first tension spring 331, first pawl 332, second tension spring 341, second pawl 342, and waist hole 343, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.
Claims
1. A segmented control multi-functional ratchet structure, comprising a ratchet body (2) connected to a trigger (1), characterized in that: The ratchet body (2) has a position prompting mechanism (3) on one side. The ratchet body (2) has a first end (4) and a second end (5) on the side close to the position prompting mechanism (3). Turning the trigger (1) can cause the first end (4) and the second end (5) to press on the position prompting mechanism (3) one after the other and then disengage from the position prompting mechanism (3) one after the other. The ratchet body (2) includes an upper plate (21) and a lower plate (22) stacked on top of each other. The upper plate (21) and the lower plate (22) are fixedly connected. The lower plate (22) is connected to the trigger (1). The second end (5) is located at one end of the upper plate (21), and the first end (4) is located at one end of the lower plate (22). The position prompting mechanism (3) includes a first mounting rod (31) and a second mounting rod (32), which are arranged parallel to each other. The position prompting mechanism (3) also includes a first prompting component (33) and a second prompting component (34), which are both connected to the first mounting rod (31). The first prompting component (33) is located below the second prompting component (34). Rotating the trigger (1) can press the first prompting component (33) onto the first end (4) and the second prompting component (34) onto the second end (5). The first prompting component (33) includes a first tension spring (331), one end of which is connected to the second mounting rod (32), and the other end is connected to the first pawl (332). The first pawl (332) is sleeved on the first mounting rod (31) and rotatably connected to the first mounting rod (31). The end of the first pawl (332) away from the first tension spring (331) cooperates with the first end (4). The second prompting component (34) includes a second tension spring (341), one end of which is connected to the second mounting rod (32), and the other end is connected to the second pawl (342). The second pawl (342) is sleeved on the first mounting rod (31) and rotatably connected to the first mounting rod (31). The end of the second pawl (342) away from the second tension spring (341) cooperates with the second end (5). The spring force of the second tension spring (341) is greater than that of the first tension spring (331).
2. The segmented control multi-functional ratchet structure as described in claim 1, characterized in that: The first end portion (4) includes several serrated structures arranged in sequence.
3. The segmented control multi-functional ratchet structure as described in claim 1, characterized in that: The second end (5) includes a first step surface (51) and a second step surface (52) extending outside the first step surface (51). The first step surface (51) and the second step surface (52) are connected by a limiting surface (53). Rotating the trigger (1) can cause the side of the position prompting mechanism (3) to press onto the first step surface (51) and the second step surface (52) in succession.
4. The segmented control multi-functional ratchet structure as described in claim 3, characterized in that: When the position indication mechanism (3) is pressed against the second step surface (52) from the side, the end of the position indication mechanism (3) is in contact with the limiting surface (53).
5. The segmented control multi-functional ratchet structure as described in claim 1, characterized in that: One end of the second pawl (342) is provided with a waist hole (343), and one end of the second tension spring (341) is hooked into the waist hole (343).
6. A clamping device, comprising a housing (100), wherein a trigger (1) is rotatably connected to the housing (100), characterized in that: The outer casing (100) is further provided with a segmented control multi-functional ratchet structure as described in any one of claims 1-5, one end of which is connected to a push rod (200) for pushing the ligation clip.