A knob, sheath handle and guide sheath
Patent Information
- Application Number
- CN202522508562.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-26
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-26
AI Technical Summary
When medical staff hold the guide sheath, the direction of the finger movement may deviate laterally, causing slippage or misalignment between the button and the finger, which affects the comfort and reliability of operation.
Design a toggle switch with stops spaced apart along a first direction for placing a finger. When the finger slides out, the stops stop along the first direction to abut the finger, increasing the contact area between the toggle switch and the finger and the circumferential covering effect, thus preventing the finger from moving significantly.
It improves the contact stability between the toggle and the finger, reduces the pressure on the finger, enhances the comfort and reliability of operation, prevents the finger from slipping or deviating on the toggle, and optimizes the operating feel.
Smart Images
Figure CN224925424U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and in particular to a toggle switch, a sheath handle, and a guide sheath. Background Technology
[0002] As an important medical instrument in modern surgery, the guide sheath creates a passage in the body cavity to insert endoscopes and other instruments for diagnosis and treatment. The guide sheath can also create negative pressure suction to remove bodily fluids or stones. The guide sheath has a knob that controls the opening of the negative pressure port, thus altering the suction force.
[0003] However, when medical staff hold the guide sheath and turn the dial, the direction of the finger movement may shift laterally, causing the finger to slip or deviate from the dial. The unstable contact between the finger and the dial may cause the dial to jam or become abnormal during the turning process, ultimately reducing the comfort and reliability of the dial operation. Utility Model Content
[0004] The purpose of this application is to provide a toggle switch, a sheath handle, and a guide sheath to solve the aforementioned technical problems existing in the prior art.
[0005] In a first aspect, this application provides a toggle switch adapted to be movably mounted on a guide sheath to adjust the opening of a negative pressure adjustment hole in the guide sheath. The toggle switch has stop portions spaced apart along a first direction, the first direction being perpendicular to the toggle switch's turning direction. There is a placement position between two adjacent stop portions, the placement position being used to place a finger, and the stop portions being used to prevent the finger from sliding out of the placement position.
[0006] Secondly, this application provides a sheath handle, which includes a toggle switch and a sheath seat as described in the first aspect, with the toggle switch movably mounted on the sheath seat.
[0007] Thirdly, this application provides a guide sheath, which includes a sheath seat as described in the second aspect, and the guide sheath has a negative pressure adjustment hole, with the mounting part of the knob movably mounted in the negative pressure adjustment hole.
[0008] The technical solution adopted in this application achieves the following beneficial effects: The dial can be movably mounted on the sheath seat of the guide sheath. The dial has a placement position for accommodating the finger. The placement position is formed between two adjacent stop portions. If the finger slides out of the placement position, the stop portion can stop the finger in a first direction, preventing the stop portion from sliding out of the placement position. When a medical staff member can turn the dial, the finger will rotate slightly. The stop portion can continuously receive and transmit the driving force of the finger, thereby realizing the position switching of the dial to adjust the opening of the negative pressure adjustment hole of the guide sheath.
[0009] Compared to related technologies, the stop portion of this application can increase the contact area between the button and the finger, and provide a circumferential wrapping effect on the fingertip. Even in the event of lateral displacement of the finger, the stop portion can still limit other lateral movements of the finger, preventing large-scale misalignment. This allows the finger to apply driving force to the button more stably, avoiding slippage or deflection of the finger on the button, and improving the operating comfort and reliability for medical personnel.
[0010] Of course, as the contact area between the stop and the finger increases, the pressure on the finger decreases when the medical staff turns the button with the same force, avoiding severe discomfort to the finger due to excessive pressure, and further optimizing the operating feel of the medical staff. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a schematic diagram of the structure of a toggle switch shown in an exemplary embodiment of this application; Figure 2 This is a schematic diagram of the structure of the toggle switch and sheath seat shown in an exemplary embodiment of this application; Figure 3 This is a schematic diagram of the structure of the guide sheath shown in an exemplary embodiment of this application; Figure 4 This is a schematic diagram of the toggle switch from another perspective, illustrating an exemplary embodiment of this application; Figure 5 This is a schematic diagram of the structure of a toggle switch from another perspective, illustrating an exemplary embodiment of this application. Figure 6 This is a schematic diagram illustrating the structure of another toggle switch, as shown in an exemplary embodiment of this application; Figure 7 This is a schematic diagram illustrating the structure of the toggle switch and sheath seat, as shown in an exemplary embodiment of this application.
[0013] In the diagram: 1. Guide sheath; 100. Sheath handle; 110. Toggle switch; 111. Recess; 1111. First recess; 1112. Second recess; 1113. Placement space; 112. Mounting part; 113. Sealing part; 114. Placement position; 115. Stop; 120. Sheath seat; 121. Negative pressure adjustment hole; 1211. First area; 1212. Second area; 200. Insertion tube. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0015] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0016] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".
[0017] When healthcare workers hold the guidance sheath and turn the dial, the direction of finger movement may shift laterally, causing the fingers to slip or deviate relative to the dial. This is because, when holding the guidance sheath, the relative position of the hand or the precision of finger control prevents a single finger from driving the dial in a perfectly straight line. To explain further, current control habits involve using the thumb to turn the dial, while the palm and other fingers hold the guidance sheath. During thumb movement, the thumb rotates around the thumb's wrist joint. This causes the thumb's fingertip to move in an arc, rather than a straight line. Therefore, during thumb movement, the fingertip may shift laterally relative to the dial.
[0018] This application provides a toggle switch 110, please refer to... Figure 1 as well as Figure 2A dial 110 is movably mounted on the guide sheath 1 to adjust the opening of the negative pressure adjustment port 121 of the guide sheath 1. Exemplarily, the guide sheath 1 can be used in stone surgery, and can cooperate with an endoscope. A laser can break up the stones to form stone particles. The guide sheath 1 can be connected to a negative pressure source, allowing the stone particles to be aspirated out of the body to complete the stone surgery. Simultaneously, the guide sheath 1 has a negative pressure adjustment port 121 that extends through both the inside and outside of the guide sheath 1. The dial 110 adjusts the opening of the negative pressure adjustment port 121. When the negative pressure adjustment port 121 is open, the guide sheath 1 can draw in outside air to reduce the pressure exerted by the guide sheath 1 on the body's interior. When the negative pressure adjustment port 121 is closed by the dial 110, the negative pressure of the guide sheath 1 can be fully applied to the body's interior, allowing the guide sheath 1 to aspirate the body's interior at maximum suction efficiency to smoothly expel the stone particles.
[0019] For further details, please refer to Figure 3 The guide sheath 1 may include a sheath base 120 and an insertion tube 200. The insertion tube 200 can be inserted into the human body and form a channel for the insertion of structures such as endoscopes. The sheath base 120 can be held or operated by medical personnel, and a knob 110 is movably mounted on the sheath base 120 to change the negative pressure effect of the sheath base 120. As the negative pressure value inside the sheath base 120 changes, the negative pressure value inside the connected insertion tube 200 also changes, thus regulating the suction pressure of the guide sheath 1.
[0020] In this application, please refer to Figure 1 The toggle switch 110 has a first direction (e.g., Figure 1 (As shown in L1) Stop portions 115 are spaced apart. The number of stop portions 115 can be two, three... or even more, and is not limited. The first direction is perpendicular to the toggle direction of the dial 110. For example, the dial can be moved along a second direction (such as... Figure 1 (As shown in L2) The dial is moved in a first direction and a second direction perpendicular to each other. A placement position 114 is provided between two adjacent stops 115. The placement position 114 is used to place the finger, and the stops 115 are used to prevent the finger from sliding out of the placement position 114. The placement position 114 is formed between two adjacent stops 115. If the finger slides out of the placement position 114, the stops 115 can stop the finger along the first direction, preventing the stops 115 from sliding out of the placement position 114. When a medical staff member can turn the dial 110, the finger will rotate slightly. The stops 115 can continuously receive and transmit the driving force of the finger, thereby switching the position of the dial 110 to adjust the opening of the negative pressure adjustment hole 121 of the guide sheath 1.
[0021] It should be noted that, along the first direction, the stop portions 115 can be distributed on opposite sides of the placement position 114, and the stop portions 115 can prevent the finger from slipping out of the placement position 114. Figure 2 As shown, on opposite sides of each placement position 114, two stops 115 can be connected together to form a continuous constraint on the fingers on the placement position 114. Of course, in another embodiment, the two stops 115 distributed on opposite sides of the placement position 114 can be arranged relatively independently, and this is not a limitation.
[0022] The stop portion 115 of this application can increase the contact area between the dial 110 and the finger, and provide a circumferential wrapping effect on the fingertip. Even in the event of lateral displacement of the finger, the stop portion 115 can still limit the lateral movement of the finger, preventing large-scale misalignment. This allows the finger to apply driving force to the dial 110 more stably, avoiding slippage or deflection of the finger on the dial 110, and improving the operating comfort and reliability for medical personnel.
[0023] Of course, with the increase in the contact area between the stop 115 and the finger, the pressure on the finger is reduced when the medical staff turns the button 110 with the same force, avoiding severe discomfort to the finger due to excessive pressure, and further optimizing the operating feel of the medical staff.
[0024] In this application, please refer to Figure 4 and Figure 5 The surface of the dial 110 is raised to form a recess 111, and the sides of the recess 111 are recessed to form a placement position 114. Stops 115 are portions of the recess 111 located on opposite sides of the placement position 114. When a medical worker's finger is placed on the placement position 114 on the surface of the dial 110, its periphery is surrounded by the stops 115 formed by the recess 111. It should be noted that the opposite ends of the recess 111 each have a first portion and a second portion, and the sides of the recess 111 are recessed. The first portion and the second portion are respectively located on opposite sides of the placement position 114, and the stops 115 can be at least one of the first portion and the second portion. In a first direction, the stops 115 can abut against the finger. The recess 111 can fit snugly against the medical worker's finger, preventing slippage between the finger and the dial 110 and improving the response speed of the dial 110. Preferably, the recessed direction of the recess 111 is parallel or collinear with the movement path of the toggle switch 110 relative to the sheath seat 120. Medical personnel apply force along the recessed direction, and the driving force of the finger is directly applied to the recess 111, causing it to abut against the fingertip, significantly reducing the probability of finger slippage during operation. This anti-slip effect is particularly noticeable in slippery scenarios such as with wet hands or wearing gloves. Furthermore, as force is applied, the recess 111 provides stronger coverage of the finger, preventing lateral misalignment and improving the user's operating feel.
[0025] In some other embodiments, the surface of the dial 110 is recessed downward to form a placement position 114. The stop portion 115 is a partial wall surrounding the placement position 114. When a medical staff member's finger is placed on the placement position 114 on the surface of the dial 110, the wall forming the placement position 114 can fully fit with the fingertip to increase the contact area between the dial 110 and the finger, thereby improving the finger's actuation effect.
[0026] In this application, as Figure 5 As shown, the recess 111 can be an arc-shaped structure. The opposite ends of the recess 111 curve towards the same side. For example, the extension path of the recess 111 can be an arc or a parabolic arc, etc., and is not limited thereto. Relatively speaking, the arc-shaped structure can better fit the contour of the finger. During the operation of the dial 110 by medical personnel, the recess 111 can conform to the outer contour of the finger to further increase the contact area between the recess 111 and the finger, thereby improving the operating feel.
[0027] In another case, the recess 111 can be a bent structure, with the opposite ends of the recess 111 bent toward the same side. The recess 111 has a first segment and a second segment connected together. The included angle between the first segment and the second segment is greater than 0° and less than 180°, such as 30°, 90° or 150°, etc., and is not limited.
[0028] In some other embodiments, the recess 111 may be composed of a combination of arcuate and bent structures to accommodate more complex situations, which will not be elaborated further here.
[0029] In this application, please refer to Figure 4 as well as Figure 5 The number of recesses 111 is not limited, such as two, three, etc. Multiple recesses 111 are spaced apart on the surface of the toggle 110 along its movement path. When the toggle 110 is moved by a finger, the multiple recesses 111 cover a larger area of the toggle 110, increasing the friction between the finger and the surface of the toggle 110 and preventing slippage. The multiple recesses 111 facilitate the transmission of force from the finger to the toggle 110, allowing the toggle 110 to follow the finger's movement along a predetermined path, preventing slippage that could lead to incomplete or misaligned movement, thus effectively improving the toggle's performance.
[0030] In one implementation, please refer to Figure 6The plurality of recesses 111 may include a first recess 1111 and a second recess 1112. The first recess 1111 and the second recess 1112 may have the same structure and size. For example, both the first recess 1111 and the second recess 1112 may be arc-shaped and mirror images of each other. The first recess 1111 and the second recess 1112 are recessed in a direction away from each other. For example, the surface of the first recess 1111 near the second recess 1112 is recessed along a first sub-direction, and the surface of the second recess 1112 near the first recess 1111 is recessed along a second sub-direction. Wherein, the first sub-direction is the direction of the first recess 1111 away from the second recess 1112, and the second sub-direction is the direction of the second recess 1112 away from the first recess 1111; the first sub-direction and the second sub-direction are opposite. Furthermore, the second direction can be the direction in which the dial 110 is turned; the first sub-direction can be the direction in which the dial 110 is turned upwards, and the second sub-direction can be the direction in which the dial 110 is turned downwards. The first recess 1111 and the second recess 1112 can simultaneously cover the finger. The opposite ends of the first recess 1111 and the second recess 1112 can both conform to the surface of the finger from both sides, increasing the contact area and friction between the finger and the recess 111, reducing slippage during turning, thereby improving the turning effect by bidirectionally surrounding the finger. In addition, the first recess 1111 and the second recess 1112 can perform bidirectional turning operations, that is, medical personnel can respectively contact or push the first recess 1111 and the second recess 1112 to drive the dial 110 to move in two directions, further reducing the probability of finger slippage during operation.
[0031] Please see Figure 6 The number of first recesses 1111 and second recesses 1112 is at least two, and the first recesses 1111 and second recesses 1112 are arranged sequentially in a direction away from each other. The sequential arrangement of multiple first recesses 1111 and multiple second recesses 1112 in a direction away from each other creates multiple spaced anti-slip contact points on the surface of the toggle 110. When a finger toggles the toggle 110, it can simultaneously contact multiple recesses 111, and the multiple protrusions collectively provide friction, avoiding slippage caused by insufficient force on a single protrusion. This makes the force transmission of the finger on the toggle 110 more stable, thereby improving the toggle effect.
[0032] Please see Figure 6A placement space 1113 is formed between the closest first recess 1111 and second recess 1112, and the placement space 1113 is suitable for placing a finger. For example, both the first recess 1111 and second recess 1112 are arc-shaped, and the placement space 1113 is cylindrical. The first recess 1111 and second recess 1112 can surround the outer periphery of the finger. The placement space 1113 provides a suitable accommodating position for the finger. After the finger is placed in this space, it is limited by the recesses 111 on both sides, preventing the finger from shifting relative to the dial 110 during operation, ensuring that the finger always maintains stable contact with the recesses 111, thereby better stabilizing the operation of the dial 110.
[0033] Preferably, please refer to Figure 6 The maximum distance d between adjacent first recesses 1111 and second recesses 1112 is 1cm-2cm, such as 1cm, 1.5cm, or 2cm, and is not limited. This distance d should not be set too large or too small, and is not limited. This distance d is adapted to the size of human fingers, ensuring that fingers can be smoothly placed in the placement space 1113. It will not cause the fingers to be unable to fit the knob 110 due to the space being too narrow, or the fingers to wobble in the space due to the gap between them being too wide, ensuring stable operation of the knob 110. It also avoids wasting the surface space of the knob 110, thus improving its utilization rate.
[0034] In this application, please refer to Figure 7 The dial 110 may include a connected mounting portion 112 and a closing portion 113. The mounting portion 112 is adapted to be movably mounted on the guide sheath 1, allowing the closing portion 113 to adjust the opening degree of the negative pressure regulating hole 121. For example, the mounting portion 112 and the hole wall surrounding the negative pressure regulating hole 121 are movably engaged; the mounting portion 112 is provided with a sliding groove, and the hole wall can be movably embedded in the sliding groove. This demonstrates that the mounting portion 112 provides a stable guide, ensuring that when the mounting portion 112 drives the closing portion 113 to adjust the opening degree of the negative pressure regulating hole 121, it can move along a preset trajectory, preventing the mounting portion 112 from deviating or jamming, and ensuring the accuracy of the closing portion 113 in adjusting the opening degree of the negative pressure regulating hole 121.
[0035] Please continue reading. Figure 7The closing portion 113 is offset relative to the central axis of the mounting portion 112. The closing portion 113 can cover and close the negative pressure regulating hole 121, so that the opening of the negative pressure regulating hole 121 is 0. Simultaneously, the mounting portion 112 can move within the negative pressure regulating hole 121. For example, the negative pressure regulating hole 121 can be a strip-shaped hole, and the mounting portion 112 can move along the extending direction of the negative pressure regulating hole 121. Compared to symmetrically arranged closing portions 113, when the closing portion 113 opens the negative pressure regulating hole 121, most of the offset closing portion 113 is radially offset from the negative pressure regulating hole 121, increasing the exposed area of the negative pressure regulating hole 121. With the same negative pressure regulating hole 121, the length of the closing portion 113 can be set smaller. While ensuring the function of closing the negative pressure regulating hole 121, the overall size of the closing portion 113 is reduced, thereby shortening the length of the closing portion 113.
[0036] For preferred options, please refer to [link / reference]. Figure 7 The negative pressure adjustment port 121 may include a first region 1211 and a second region 1212, which are interconnected. When the knob 110 opens the negative pressure adjustment port 121, the sealing portion 113 is located within the second region 1212, and the first region 1211 is connected to the inside and outside of the sheath seat 120. When the knob 110 opens the negative pressure adjustment port 121, the sealing portion 113 moves into the first region 1211, and the first region 1211 is closed. The mounting portion 112 is located on the side of the sealing portion 113 closer to the first portion. During the process of closing the negative pressure adjustment port 121, the medical staff pushes the knob 110 with their fingers, which makes it easier for the force of the medical staff's fingers to be transmitted to the mounting portion 112, so that the knob 110 can be quickly turned to adjust the suction force of the guide sheath 1.
[0037] Preferably, the mounting portion 112 can be a rigid structure, such as polyvinyl chloride or medical-grade stainless steel, and there are no restrictions. A rigid mounting portion 112 can stably fit against the hole wall, avoiding excessive friction between them, thereby improving the smoothness of the toggle switch 110. The sealing portion 113 can be a soft structure, such as rubber or polypropylene, and there are no restrictions. A soft sealing portion 113 can conform to the sheath seat 120 to improve the sealing effect.
[0038] This application provides a sheath handle 100; please refer to the previous section. Figure 3 The sheath handle 100 includes a toggle switch 110 and a sheath seat 120 as described above, with the toggle switch 110 movably mounted on the sheath seat 120. This gives the sheath handle 100 the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here.
[0039] This application provides a guide sheath 1, please refer to... Figure 3The guide sheath 1 includes the sheath base 120 as described above, and the guide sheath 1 has a negative pressure adjustment hole 121. The mounting part 112 of the dial 110 is movably mounted in the negative pressure adjustment hole 121. In this way, the guide sheath 1 has the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here.
[0040] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0041] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.
Claims
1. A toggle switch, characterized in that, The dial is adapted to be movably mounted on the guide sheath to adjust the opening of the negative pressure adjustment hole of the guide sheath. The dial has stop portions spaced apart along a first direction, the first direction being perpendicular to the dial's turning direction. There is a placement position between two adjacent stop portions, the placement position being used to place a finger, and the stop portions being used to prevent the finger from sliding out of the placement position.
2. The toggle switch according to claim 1, characterized in that, The surface of the dial is raised to form a recess, and the sides of the recess are recessed to form the placement position. The stop portion is the part of the recess located on opposite sides of the placement position. Alternatively, the surface of the toggle switch is recessed downwards to form the placement position, and the stop is a portion of the wall surrounding the placement position.
3. The toggle switch according to claim 2, characterized in that, The number of recesses is multiple, and the multiple recesses are distributed at intervals on the surface of the toggle button along the moving path of the toggle button; And / or, the recess is an arc-shaped structure or a bent structure; And / or, the recessed direction of the recess is parallel or collinear with the moving path of the toggle switch.
4. The toggle switch according to claim 3, characterized in that, The plurality of recesses include a first recess and a second recess, wherein the first recess and the second recess are recessed in a direction away from each other.
5. The toggle switch according to claim 4, characterized in that, The number of the first recess and the second recess is at least two, and the first recess and the second recess are arranged sequentially in a direction away from each other.
6. The toggle switch according to claim 4 or 5, characterized in that, A placement space is formed between adjacent first and second recesses, the placement space being adapted to place a finger.
7. The toggle switch according to claim 6, characterized in that, The furthest distance between adjacent first and second recesses is 1cm-2cm.
8. The toggle switch according to claim 1, characterized in that, The dial includes a connected mounting portion and a closing portion. The mounting portion is adapted to be movably mounted on the guide sheath, so that the closing portion can adjust the opening of the negative pressure adjustment hole. The closing portion is offset relative to the central axis of the mounting portion.
9. A sheath handle, characterized in that, The sheath handle includes a knob and a sheath seat as described in any one of claims 1-8, the knob being movably mounted on the sheath seat.
10. A guiding sheath, characterized in that, The guide sheath includes the sheath base as described in claim 9, the guide sheath having a negative pressure adjustment hole, and the mounting part of the knob being movably mounted in the negative pressure adjustment hole.