Handle of medical instrument, medical instrument and operation method of medical instrument

Abstract

The embodiment of the invention provides a handle of a medical instrument. The handle comprises a handheld part, a driving part and a plurality of transmission parts used for being in transmission connection with a plurality of moving parts at the far end of the medical instrument. The handheld part is in sliding fit with the driving part; and the driving part is connected with at least one of the plurality of transmission parts in a switchable manner.

Description

Handle of medical device, medical device and operating method of medical device

[0001] Cross-references

[0002] This application claims priority to Chinese application No. 202311236687.4 filed on September 22, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This specification relates to the field of medical devices, and in particular to a medical device handle, a medical device, and a method for operating the medical device. Background Art

[0004] Most medical devices used in endoscopic surgery are independent moving parts, and their movement can only be controlled by corresponding independent operating parts. That is, when there is an operating part on the handle, and the operating part can only control one moving part at the far end, if you want to control multiple moving parts at the far end, you need to add an operating part to one handle, or directly use multiple handles.

[0005] However, when operating multiple moving parts at the distal end through multiple operating components, the operator is required to operate with multiple hands, which brings inconvenience to clinical use. It not only increases the complexity and difficulty of the operation, but also causes coordination difficulties and operational errors, affecting the accuracy and safety of the operation.

[0006] Therefore, it is desired to provide a handle that can facilitate the manipulation of multiple moving parts and a medical device including such a handle.

[0007] Summary of the Invention

[0008] One of the embodiments of this specification provides a handle for a medical device, comprising: a hand-held portion, a driving portion, and a plurality of transmission portions for transmission connection with a plurality of moving parts at the distal end of the medical device; the hand-held portion slidingly cooperates with the driving portion; the driving portion is switchably connected to at least one of the plurality of transmission portions.

[0009] One of the embodiments of the present specification provides a medical device, comprising: a handle as described in any embodiment of the present specification; a conveying assembly, the proximal end of which is connected to the handle; and a plurality of moving parts, which are arranged at the distal end of the conveying assembly, each of the moving parts being in transmission connection with at least one of the plurality of transmission parts.

[0010] One of the embodiments of this specification provides an operating method for a medical device, which is applied to the medical device described in any embodiment of this application, and the method includes: controlling the driving part and multiple transmission parts of the handle to be in a preset position; driving the multiple transmission parts to rotate around a first direction until a target transmission part among the multiple transmission parts cooperates with the driving part; controlling the driving part to drive the target transmission part to slide along the first direction to control the moving part connected to the target transmission part to perform an action. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] This specification will be further described in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, like numbers represent like structures, wherein:

[0012] FIG1 is a schematic structural diagram of a handle according to some embodiments of the present specification;

[0013] FIG2 is an exploded view of a handle according to some embodiments of the present specification;

[0014] FIG3 is a schematic diagram of the AA' section in FIG1;

[0015] FIG4A is a cross-sectional view of the connection between the driving portion and the transmission portion according to some embodiments of the present specification;

[0016] FIG4B is an enlarged view of area B in FIG4A ;

[0017] FIG5 is a schematic structural diagram of a handle according to other embodiments of the present disclosure;

[0018] FIG6 is an exploded view of a handle according to some embodiments of the present specification;

[0019] FIG7 is a schematic structural diagram of a handheld portion according to some embodiments of this specification;

[0020] FIG8A is a schematic structural diagram of a rotating cap according to some embodiments of the present specification;

[0021] FIG8B is a cross-sectional view of FIG8A;

[0022] FIG9 is a cross-sectional view taken along line DD' shown in FIG5 ;

[0023] FIG10 is an enlarged view of portion E shown in FIG9 ;

[0024] FIG11 is an enlarged view of the E' portion shown in FIG9;

[0025] FIG12 is a schematic structural diagram of a handle according to yet other embodiments of the present disclosure;

[0026] FIG13 is an exploded view of a handle according to some embodiments of the present specification;

[0027] FIG14 is a schematic diagram showing the connection between the inner ring sleeve and the first positioning assembly and the second positioning assembly according to some embodiments of this specification;

[0028] FIG15 is a schematic structural diagram of a handheld portion according to yet other embodiments of the present disclosure;

[0029] FIG16 is a cross-sectional view taken along line GG' shown in FIG15;

[0030] FIG17A is an enlarged view of portion G1 in FIG16 ;

[0031] FIG17B is a schematic diagram of a first positioning assembly and a second positioning assembly according to yet other embodiments of the present specification;

[0032] FIG18 is a schematic structural diagram of a handheld portion and a driving portion according to some other embodiments of the present disclosure;

[0033] FIG19 is a cross-sectional view of the handle and the driving portion taken along line BB when the driving portion is located at a preset position according to some embodiments of the present specification;

[0034] FIG20 is an enlarged view of portion C in FIG19 ;

[0035] FIG21 is a cross-sectional view of the handle portion and the driving portion when the driving portion drives the transmission portion into the release space according to some embodiments of the present specification;

[0036] FIG22 is an enlarged view of portion D in FIG21;

[0037] FIG23 is a schematic structural diagram of a handle according to some other embodiments of the present specification;

[0038] FIG24 is a cross-sectional view of the handle AA shown in FIG23;

[0039] FIG25 is a schematic diagram of the connection between the rotating cap and the handheld portion according to some embodiments of this specification;

[0040] FIG26 is an enlarged view of portion H in FIG25 ;

[0041] FIG27 is a schematic structural diagram of a card slot according to some embodiments of this specification;

[0042] FIG28 is a schematic structural diagram of a card block according to some embodiments of this specification;

[0043] FIG29 is an exploded view of a handle according to some embodiments of the present specification;

[0044] FIG30 is a cross-sectional view of a support rod provided with a blocking portion according to some embodiments of this specification;

[0045] FIG31 is a schematic structural diagram of a support rod according to some embodiments of this specification;

[0046] FIG32 is a schematic structural diagram of a position-limiting portion and a resisting portion according to some embodiments of this specification;

[0047] FIG33 is a schematic structural diagram of a resisting portion in a released position according to some embodiments of this specification;

[0048] FIG34 is a schematic structural diagram of a handheld portion according to some embodiments of this specification;

[0049] 35A to 35D are schematic diagrams of the structure of the handle in the first position according to some embodiments of this specification;

[0050] 36A to 36D are schematic diagrams of the structure of the handle in the second position according to some embodiments of this specification;

[0051] 37A to 37D are schematic diagrams of the structure of the handle in the third position according to some embodiments of this specification;

[0052] FIG38 is an exploded view of a handle according to some embodiments of the present specification;

[0053] FIG39 is a schematic diagram of the engagement between the locking member and the handheld portion according to some embodiments of this specification;

[0054] FIG40 is a cross-sectional view of the engagement between the locking member and the handheld portion according to some embodiments of this specification;

[0055] FIG41 is a schematic diagram of a locking member separated from a handheld portion according to some embodiments of this specification;

[0056] FIG42A is a schematic diagram of a locking member in a locked state according to some embodiments of this specification;

[0057] FIG42B is a schematic diagram of a locking member in an open state according to some embodiments of this specification;

[0058] FIG43 is a schematic structural diagram of a medical device according to some embodiments of this specification;

[0059] FIG44 is a schematic structural diagram of a delivery assembly according to some embodiments of the present specification;

[0060] FIG45 is a schematic diagram of the structure of the activity change of FIG44;

[0061] FIG46 is a flowchart illustrating a method for operating a medical device according to some embodiments of this specification;

[0062] FIG47 is a schematic structural diagram of a medical device according to some embodiments of this specification;

[0063] FIG48 is a schematic structural diagram of a medical device during operation according to some embodiments of this specification;

[0064] FIG49 is a cross-sectional view of the medical device shown in FIG48 taken along line X1-X1′;

[0065] FIG50 is a partial enlarged view of the X11 portion in FIG49;

[0066] FIG51 is a schematic structural diagram of a medical device in another operation process according to some embodiments of this specification;

[0067] FIG52 is a cross-sectional view of the medical device shown in FIG51 taken along line X2-X2';

[0068] FIG53 is a partial enlarged view of portion X22 in FIG52;

[0069] FIG54 is a schematic structural diagram of a medical device in another operation process according to some embodiments of this specification;

[0070] FIG55 is a cross-sectional view of the medical device shown in FIG54 taken along line X3-X3';

[0071] FIG56 is a partial enlarged view of portion X33 in FIG55;

[0072] FIG57 is a schematic structural diagram of a medical device in another operation process according to some embodiments of this specification;

[0073] FIG58 is a cross-sectional view of the medical device shown in FIG57 taken along line X4-X4′;

[0074] Figure 59 is a partial enlarged view of the X44 part in Figure 58. DETAILED DESCRIPTION

[0075] To more clearly illustrate the technical solutions of the embodiments of this specification, the following briefly describes the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this specification. Those skilled in the art can apply this specification to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0076] As used in this specification and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not specifically refer to the singular and may also include the plural, unless the context clearly indicates an exception. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been explicitly identified, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements. The term "based on" means "at least in part based on." The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment."

[0077] In this specification, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this specification based on specific circumstances.

[0078] It should be understood that the terms "system," "device," "unit," and / or "module" used herein are a method for distinguishing different components, elements, parts, portions, or assemblies at different levels. However, if other terms can achieve the same purpose, the terms may be replaced by other expressions.

[0079] The terms "first," "second," and similar terms used in this specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, the terms "a" or "an" and similar terms do not denote a limitation on quantity, but rather denote the presence of at least one. Throughout this specification, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0080] Unless otherwise indicated, terms such as "front," "rear," "lower," and / or "upper" are used for ease of description only and are not intended to limit a method or apparatus to a specific location or spatial orientation. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list; a method or apparatus may also include other steps or elements.

[0081] Flowcharts are used throughout this specification to illustrate the operations performed by systems according to embodiments of this specification. It should be understood that preceding or following operations do not necessarily need to be performed in exact order. Instead, the steps may be processed in reverse order or simultaneously. Furthermore, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0082] In an embodiment of the present invention, a handle for a medical device is provided, comprising: a handheld portion, a driving portion, and multiple transmission portions for transmission connection with multiple moving parts at the distal end of the medical device. In some embodiments, the handheld portion and the driving portion are slidably engaged. An operator can manipulate the driving portion to slide the driving portion relative to the handheld portion. In some embodiments, the driving portion is switchably connected to at least one of the multiple transmission portions. In some embodiments, by sliding the driving portion to a specific position, the driving portion can be switched from connection with one of the multiple transmission portions to connection with another of the multiple transmission portions. In some embodiments, the multiple transmission portions are connected to multiple moving parts at the distal end of the medical device in a one-to-one correspondence. When the driving portion switches to connection with one of the multiple transmission portions, the driving portion can drive the moving parts connected to that transmission portion to move. In an embodiment of the present invention, by configuring the driving portion to switchably connect to at least one of the multiple transmission portions, the driving portion can switchably drive at least one of the multiple moving parts to move. This allows the operator to control the multiple moving parts by manipulating the handle, thereby increasing safety when manipulating the multiple moving parts and reducing operational errors.

[0083] Fig. 1 is a schematic diagram of the structure of a handle according to some embodiments of this specification. As shown in Fig. 1, the handle 100 includes a hand-held portion 1, a driving portion 2 and a transmission portion.

[0084] The medical device is used to perform diagnostic and treatment activities. The operator can control the medical device to perform diagnostic and treatment activities (such as clamping, electrocoagulation, cutting, sampling, etc.) by manipulating the handle 100.

[0085] The handheld portion 1 refers to the portion of the handle 100 that is intended for the operator to hold. In some embodiments, the drive portion 2 and the transmission portion can be relatively movably disposed on the handheld portion 1. In some embodiments, the handheld portion 1 can be a structure of any shape that is convenient for the operator to hold. In some embodiments, to facilitate the operator's grip on the handle 100, the handheld portion 1 includes a proximal finger ring 11, which is disposed at the proximal end of the handheld portion 1. The proximal finger ring 11 can be used for the operator to hold it with one hand. In some embodiments, to facilitate the operator's manipulation of the handle 100, the proximal finger ring 11 is rotatably mounted at the proximal end of the handheld portion 1. In other embodiments, the proximal finger ring 11 can also be fixed to the proximal end of the handheld portion 1. In some embodiments, the proximal finger ring 11 is detachably connected to the handheld portion 1. In some embodiments, to facilitate the connection of the handle 100 to other structures of the medical device (such as a sheath), the handheld portion 1 further includes a connector 12. In some embodiments, the connector 12 is detachably mounted at the distal end of the handheld portion 1. It should be noted that the “proximal end” mentioned in this specification refers to the end of the handle 100 close to the operator, and conversely, the “distal end” refers to the end of the handle 100 away from the operator.

[0086] The driving portion 2 is the portion that an operator controls to drive the moving components at the distal end of the medical device. In some embodiments, the driving portion 2 is connected to the handheld portion 1 in a sliding fit, and the driving portion 2 can slide relative to the handheld portion 1 in a first direction, wherein the first direction is the sliding direction of the sliding fit.

[0087] In some embodiments, the driving unit 2 can rotate relative to the handheld portion 1 about a first direction. In some embodiments, the driving unit 2 can first slide along the first direction, and then rotate relative to the handheld portion 1 about the first direction. In some embodiments, the first direction can be the axial direction of the handle 100 or a direction approximately to the axial direction. The axial direction of the handle 100 refers to the extending direction between the proximal end and the distal end of the handle 100. For ease of understanding, the following description will be described using the first direction as the axial direction as an example. In some embodiments, the driving unit 2 first slides along the axial direction of the handle 100, and then rotates along the circumferential direction of the handle 100. The circumferential direction of the handle 100 refers to the direction surrounding the axial direction of the handle 100. In some embodiments, when the driving unit 2 slides axially to a preset position, the driving unit 2 can rotate axially relative to the handheld portion 1. The preset position refers to a position where the driving unit 2 and the transmission unit can be switched and connected in the first direction.

[0088] In other embodiments, the driving portion 2 is restricted from rotating relative to the handheld portion 1 in a first direction, and when the driving portion 2 slides axially to a predetermined position, the transmission portion can move to connect with the driving portion 2. For more information on the driving portion 2 being restricted from rotating relative to the handheld portion 1 in the first direction, please refer to the following description.

[0089] The transmission part is used to connect the driving part 2 with the moving parts at the distal end of the medical device. In some embodiments, the handle 100 includes a plurality of transmission parts, and the plurality of transmission parts are arranged in a one-to-one correspondence with the plurality of moving parts, and the plurality of transmission parts are located at different positions on the handle 100. In some embodiments, when the driving part 2 slides to the corresponding position, it can be connected to the transmission part at the corresponding position through operation, thereby driving the moving parts connected to the transmission part at the corresponding position to move, and realizing the corresponding diagnosis and treatment behavior. In some embodiments, the driving part 2 has an operating state of driving the transmission part connected thereto to slide synchronously. When the driving part 2 is connected to the transmission part, the operator operates the driving part 2 to slide, which can drive the transmission part to move, and then control the movement of the specified moving parts, such as controlling the opening and closing of the moving parts to clamp tissues, sampling, etc.

[0090] In some embodiments, multiple transmission components are distributed along a first direction. In some embodiments, the drive unit 2 is rotatable relative to the handheld portion 1 about the first direction, while the multiple transmission components are restricted from rotating freely about the first direction. The drive unit 2 can rotate about the first direction at a predetermined position and can be switchably connected to one or more of the multiple transmission components to drive the movement of the moving components connected to the connected transmission components. In some embodiments, the drive unit 2 can rotate with the handheld portion 1 about the first direction. When the drive unit 2 rotates about the first direction to a position corresponding to any transmission component, it can connect with the corresponding transmission component. In some embodiments, the drive unit 2 can also slide with the handheld portion 1 in the first direction and rotate about the first direction. When the drive unit 2 slides along the first direction to a predetermined position, when the drive unit 2 rotates about the first direction relative to the handheld portion 1 to a position corresponding to any transmission component, it can connect with the corresponding transmission component. In some embodiments, while the drive unit 2 is rotatable relative to the handheld portion 1 about the first direction, the multiple transmission components are restricted from rotating about the first direction relative to the handle 100. For example, the multiple transmission components cannot rotate about the first direction relative to the handle 100.

[0091] In some embodiments, the positions of the multiple transmission components on the handheld portion 1 are adjustable. By adjusting the positions of the transmission components, any one or more of the transmission components can be docked with the drive component 2, which then drives the moving component through the transmission components. In some embodiments, the positions of the multiple transmission components are adjustable along a first direction. In this embodiment, the drive component 2 can slide with the handheld portion 1 in the first direction and is restricted from rotating relative to the handheld portion 1 in the first direction. For example, the drive component 2 cannot rotate relative to the handle 100 in the first direction. The drive component 2 slides along the first direction to a predetermined position, and the position of the transmission components along the first direction is adjusted to dock with the drive component 2. In this embodiment, the drive component 2 can also slide with the handheld portion 1 in the first direction and rotate with the handheld portion 1 in the first direction. The drive component 2 slides along the first direction to a predetermined position, rotates relative to the handheld portion 1 in the first direction, and / or the position of the transmission components along the first direction is adjusted to dock with the drive component 2. In some embodiments, the drive component 2 slides with the handheld portion 1 in the first direction, and the positions of the multiple transmission components along the first direction are adjustable. By adjusting the position of the transmission portion in a direction around the first direction, the driving portion 2 is manipulated to slide along the first direction to a predetermined position, so that the driving portion 2 is docked with the transmission portion, thereby driving the moving component connected to the transmission portion docked with the driving portion 2. In some embodiments, the driving portion 2 and the transmission portion are spaced apart in the first direction to prevent accidental connection between the driving portion 2 and the transmission portion, and the operation of the driving portion 2 and the transmission portion is separated, which can largely avoid operational errors.

[0092] In some embodiments, the handle 100 includes an adjustment portion, which cooperates with multiple transmission portions (such as sliding cooperation), and the adjustment portion drives at least one of the multiple transmission portions to be switchably connected to the drive portion 2. When it is necessary to move a specified moving part, the drive portion 2 is driven to slide to a preset position, and the adjustment portion is used to adjust the positions of different transmission portions so that the transmission portion connected to the moving part is connected to the drive portion 2. The operator then drives the drive portion 2 to slide along the first direction to drive the transmission portion to move, thereby controlling the movement of the specified moving part. When it is necessary to switch to control other moving parts, the drive portion 2 and the transmission portion connected thereto are driven to slide and return to the preset position, and the adjustment portion is then used to control the connection of other transmission portions to the drive portion 2.

[0093] In some embodiments, the adjusting portion rotates about a first direction to adjust the position of the transmission portion. In some embodiments, the adjusting portion is rotatably connected to the handheld portion 1, and the rotation axis of the rotatable connection is parallel to the first direction. The adjusting portion is connected to a plurality of transmission portions, and when the adjusting portion rotates relative to the handheld portion 1, it can drive the transmission portion to rotate, thereby switching the connection between one or more transmission portions and the driving portion 2. In some embodiments, the adjusting portion and the plurality of transmission portions are slidably matched along the first direction. After one or more transmission portions are connected to the driving portion 2, driven by the driving portion 2, the driving portion 2 and the transmission portion connected thereto slide toward the distal end or proximal end of the handle 100 together to cause the designated moving parts to move.

[0094] In some embodiments, the transmission unit includes a transmission rod and a traction rope (not shown). The transmission rod is disposed within the handle 1 and is connected to the moving component via the traction rope. The adjustment unit drives different transmission units to connect to the drive unit 2, which in turn drives different moving components by driving different traction ropes. In some embodiments, the drive unit 2 rotates along the circumference of the handle 1, and the positions of the multiple transmission units remain fixed. The drive unit 2 rotates to connect to the corresponding transmission unit. In this case, the position of the traction rope is not affected.

[0095] In some embodiments, the adjustment unit drives the transmission unit to rotate along the circumference of the handheld portion 1 to select a corresponding transmission unit for connection with the drive unit 2. In this case, the drive unit 2 can connect to different transmission units without rotating. When using the handle 100, the operator's finger controlling the drive unit 2 only needs to apply axial driving force to the drive unit 2 to operate the handle, while the operator can rotate the adjustment unit with the other hand. This reduces the difficulty of operating the handle and improves its controllability.

[0096] The following describes various embodiments of the handle 100 with reference to the accompanying drawings. It should be noted that the following embodiments are for illustrative purposes only and are not intended to limit the scope of this specification. Those skilled in the art may make modifications or adjustments based on the embodiments described herein, and such modifications or adjustments are within the scope of this specification.

[0097] Figure 2 is an exploded view of a handle according to some embodiments of the present invention. Figure 3 is a schematic diagram of the AA' section of Figure 1. Figure 4A is a cross-sectional view of the connection between the drive unit and the transmission unit according to some embodiments of the present invention. Figure 4B is an enlarged view of area B in Figure 4A.

[0098] In some embodiments, as shown in FIG2 , the handheld portion 1 includes a support shell 10, the support shell 10 encloses a mounting cavity 13, and a sliding guide groove 14 along a first direction is provided on the support shell 10. In some embodiments, the driving portion 2 is sleeved on the outside of the handheld portion 1, and the driving portion 2 can slide along the first direction of the handheld portion 1. In some embodiments, the driving portion 2 includes a sliding member 21, and the sliding member 21 can be detachably provided. As shown in FIG2 , the sliding member 21 is formed by splicing two parts that are arranged opposite to each other, so that the driving portion 2 can be installed on the handheld portion 1. The two detached parts of the sliding member 21 are spliced ​​to form an insertion channel, which is used to pass through the handheld portion 1 so that the driving portion 2 is sleeved on the outside of the handheld portion 1. In some embodiments, the sliding member 21 includes a sliding finger ring 211, and the operator's finger is inserted into the sliding finger ring 211 to control the driving portion 2. Specifically, the two separated parts of the sliding ring 211 are each provided with a snap-on slot 2111. The inner side of the snap-on slot 2111 is adapted to fit the outer side of the handheld portion 1, allowing the driving unit 2 to be locked onto the outer side of the handheld portion 1 through the snap-on slot 2111. The snap-on slots 2111 on the two separated parts of the sliding member 21 are spliced ​​together to form an insertion channel. In some embodiments, the sliding member 21 can also be provided as an integrally molded structure, with the insertion channel provided in the middle portion of the sliding member 21.

[0099] In some embodiments, referring to FIG3 , the driving unit 2 is mounted on the outside of the handheld unit 1 via a bayonet 2111, and a limiting structure 5 is provided between the driving unit 2 and the handheld unit 1 to limit the rotation of the driving unit 2. The limiting structure 5 includes a first mating surface 51 provided on the handheld unit 1 and a second mating surface 52 provided on the driving unit 2. The first mating surface 51 and the second mating surface 52 cooperate with each other to form an irregular curved surface, thereby limiting the rotation of the driving unit 2 about a first direction.

[0100] Figure 5 is a schematic diagram of the structure of a handle according to other embodiments of this specification. Figure 6 is an exploded view of a handle according to some embodiments of this specification. Figure 7 is a schematic diagram of the structure of a handheld portion according to some embodiments of this specification. Figure 8A is a schematic diagram of the structure of a rotating cap according to some embodiments of this specification. Figure 8B is a cross-sectional view of Figure 8A.

[0101] The difference between the handle 100 shown in FIG. 5-FIG . 6 and the handle 100 shown in FIG. 2-FIG . 4B is that the sliding member 21 includes an annular ring 212 .

[0102] In some embodiments, referring to Figures 5-6 , to facilitate installation, the annular ring 212 is configured as a split structure, allowing the annular ring 212 to be detachably mounted on the handheld portion 1. A groove (not shown in Figures 5-6 ) included in the driving portion 2 is provided on the annular ring 212. In some embodiments, to facilitate the operator's manual movement of the annular ring 212, blocks or rings may be provided at the proximal and distal ends of the annular ring 212 to form a groove for the operator to grasp.

[0103] In some embodiments, referring to Figures 2 to 6, the adjusting portion 3 is rotatably mounted in the mounting cavity 13, and the adjusting portion 3 rotates around its rotation axis, which is the axis of the adjusting portion 3 itself, and is parallel to the first direction. When the driving portion 2 and the transmission portion 4 are both located at preset positions in the first direction, the operator or the operating device can driveably switch the transmission portion 4 connected to the driving portion 2 by rotating the adjusting portion 3. In some embodiments, the adjusting portion 3 includes a support rod 30, which is rotatably mounted in the mounting cavity 13, and the rotation axis refers to the central axis of the support rod 30 itself. In some embodiments, a plurality of sliding grooves 31 are provided on the support rod 30 along the first direction, and the sliding grooves 31 are arranged one-to-one with the transmission portion 4, and each of the plurality of transmission portions 4 is slidably engaged with the adjusting portion 3 through a sliding groove 31.

[0104] In some embodiments, multiple sliding grooves 31 extend through the distal end of the support rod 30, allowing the transmission portion 4 to pass through the support rod 30 and connect to the moving component. In some embodiments, the sliding grooves 31 are stepped to prevent the transmission portion 4 from disengaging from the sliding grooves 31 along the radial direction of the support rod 30. The radial direction of the support rod 30 refers to the direction perpendicular to the center of the cross-section of the support rod 30 pointing outward from the support rod 30.

[0105] In some embodiments, the adjustment portion 3 includes a rotation drive assembly 32, which is configured to drive the support rod 30 to rotate about a rotation axis when subjected to an external force. In some embodiments, the rotation drive assembly 32 is connected to the proximal end or distal end of the support rod 30. Of course, in other embodiments, the rotation drive assembly 32 may also be located midway between the proximal end and the distal end of the support rod 30. In some embodiments, the rotation drive assembly 32 is located at the proximal end of the handheld portion 1 to facilitate operation by the operator.

[0106] In some embodiments, referring to Figures 2-4B , the rotation drive assembly 32 includes a toggle member. The toggle member includes a toggle lever 321. The handle 1 includes a toggle lever guide slot 15 located on the handle 1. One end of the toggle lever 321 is fixedly connected to the support rod 30, while the other end extends through the toggle lever guide slot 15 and out of the handle 1. An operator can manipulate the end of the toggle lever 321 located outside the handle 1 to rotate the support rod 30, thereby rotating the adjustment portion 3 within the mounting cavity 13. In some embodiments, the toggle lever guide slot 15 is arranged along a first direction, enabling the support rod 30 to rotate about the rotation axis.

[0107] In some embodiments, to prevent the lever 321 from rotating randomly and to enable it to move to a designated position, the lever guide slot 15 includes one or more positioning notches 151. These notches 151 are disposed within the lever guide slot 15. The lever 321 moves along the lever guide slot 15, driving the transmission unit 4 to rotate about the rotation axis. When the lever 321 engages with one of the positioning notches 151, the drive unit 2 is connected to one of the multiple transmission units 4. In some embodiments, the positioning notches 151 can be either raised or recessed. Raised structures protrude from the wall of the lever guide slot 15, while recessed structures are recessed relative to the wall of the lever guide slot 15. Both structures can be used to locate the position of the lever 321.

[0108] In some embodiments, to facilitate operator manipulation of the lever 321 while also restraining the adjustment portion 3 and preventing the lever 321 from falling out of the lever guide slot 15, a toggle member 322 is connected to the end of the lever 321 located outside the lever guide slot 15. The edge of the toggle member 322 extends beyond the lever guide slot 15 and is restrained outside the lever guide slot 15, thereby preventing the lever 321 from falling out of the lever guide slot 15. In some embodiments, the toggle member 322 can be configured as a circular block or an arc-shaped block. In some embodiments, the side surface of the toggle member 322 is in contact with a partial wall surface of the handle portion 1.

[0109] In some embodiments, referring to Figures 5-8B , the rotation drive assembly 32 includes a rotation cap 324. In some embodiments, to enhance grip comfort for the operator and facilitate two-handed operation of the handle 100, the rotation drive assembly 32 is located at the distal end of the handle 100. The rotation drive assembly 32 is connected to the support rod 30 and rotatably coupled to the handheld portion 1 to drive the support rod 30 to rotate about its axis. In some embodiments, the rotation drive assembly 32 includes a rotation cap 324, as shown in Figures 8A and 8B . The rotation cap 324 is configured as an integrated annular structure and is sleeved on the distal end of the handheld portion 1 and rotatably coupled thereto. Specifically, as shown in Figures 6-7 , a lever guide slot 15 is provided at the distal end of the handheld portion 1. The lever 321 is fixedly mounted at the distal end of the support rod 30 and passes through the lever guide slot 15 to engage with a mating slot 3231 in the rotation cap 324, thereby enabling the rotation cap 324 to drive the support rod 30 to rotate. The stop protrusion 152 protruding from the lever guide groove 15 can form a stop groove 153 at the end of the lever guide groove 15 to limit the rotation stroke of the support rod 30 .

[0110] In some embodiments, a retaining groove 18 is provided at the distal end of the handheld portion 1, and a retaining ring 3232 is provided on the inner wall of the rotating cap 324. When the rotating cap 324 is inserted from the distal end of the handheld portion 1, the retaining ring 3232 snaps into the retaining groove 18 to form a rotational fit. To facilitate assembly, a mating groove 3231 is provided on the inner wall of the rotating cap 324. The mating groove 3231 extends from the proximal end to the distal end of the rotating cap 324, allowing the deflector rod 321 to slide directly into the mating groove 3231 during assembly of the rotating cap 324. It will be understood that the deflector rod 321, which is fixedly connected to the support rod 30, constitutes the radially outwardly protruding stopper of the support rod 30, and the mating groove 3231 constitutes the axially disposed groove of the rotating cap 324.

[0111] Figure 23 is a schematic diagram of the structure of a handle according to some other embodiments of this specification. In some embodiments, as shown in Figure 23, the rotation drive assembly 32 includes a rotation cap 324. The rotation cap 324 is rotationally connected to the handle portion 1 and slides with the adjustment portion 3 along the axial direction of the adjustment portion 3. By rotating the rotation cap 324, the transmission portion 4 connected to the drive portion 2 can be adjusted.

[0112] FIG. 24 is a cross-sectional view of the handle AA shown in FIG. 23 .

[0113] In some embodiments, to increase the comfort of the operator's hand holding, a rotating cap 324 is located at the distal end of the handle 100. The rotating cap 324 rotates around the axial direction of the handheld portion 1 and is connected to the support rod 30 to drive the support rod 30 to rotate around its rotation axis. In some embodiments, the rotating cap 324 is mounted on the outside of the distal end of the handheld portion 1 and rotates with the outer side of the handheld portion 1. In some embodiments, as shown in Figure 24, the support rod 30 of the adjustment portion 3 includes an axially arranged limit groove 311, which is arranged outward from the handheld portion 1. The rotating cap 324 includes a limit plate 3241 that protrudes radially inward along the support rod 30. The limit plate 3241 can at least partially extend into the limit groove 311 and slide with the limit groove 311 along a first direction. When the limit plate 3241 is engaged in the limit groove 311, the rotating cap 324 is rotated, and the support rod 30 also rotates, thereby switching the transmission portion 4 connected to the drive unit 2. In some embodiments, a plurality of limiting platforms 3241 and limiting grooves 311 may be provided correspondingly. It should be understood that the limiting platforms 3241 and limiting grooves 311 may be interchangeably provided. For example, the support rod 30 may include a radially outwardly protruding limiting platform, and the rotating cap may include an axially arranged groove, wherein the limiting platform at least partially extends into the groove and slidably engages with the groove.

[0114] Figure 25 is a schematic diagram of the connection between the rotating cap and the handle according to some embodiments of this specification. Figure 26 is an enlarged view of section H in Figure 25. Figure 27 is a schematic diagram of the structure of the card slot according to some embodiments of this specification. Figure 28 is a schematic diagram of the structure of the card block according to some embodiments of this specification.

[0115] In some embodiments, as shown in Figures 26-28, a gear structure for positioning the rotation angle of the adjustment portion 3 is provided between the rotating cap 324 of the adjustment portion 3 and the handheld portion 1. The gear structure includes a slot 3251 and a block 3252 that can engage with each other. The rotating cap 324 is provided with a plurality of slots 3251, and the handheld portion 1 is provided with a block 3252. The slots 3251 and the block 3252 are arranged close to each other, and the slots 3251 are opened toward the block 3252. In some embodiments, the slots 3251 are provided on the side where the rotating cap 324 and the handheld portion 1 are connected, and the block 3252 is provided on the side where the handheld portion 1 and the rotating cap 324 are connected. The slots 3251 are arranged along the radial direction of the rotating cap 324, and the block 3252 is arranged along the radial direction of the handheld portion 1 to comply with the rotation of the rotating cap 324. In some embodiments, the slot 3251 extends radially through the outer side of the rotating cap 324, and the block 3252 extends radially through the outer side of the handheld portion 1, so that the operator can observe the engagement between the slot 3251 and the block 3252. When the rotating cap 324 is rotated and the slot 3251 engages with the block 3252, the support rod 30 rotates to a designated position, at which point the drive unit 2 can connect with the corresponding transmission unit 4. It should be understood that the slots 3251 and the blocks 3252 can be interchanged. For example, a plurality of blocks 3252 can be provided on the rotating cap 324, while a slot 3251 can be provided on the handheld portion 1.

[0116] In some embodiments, the gear structure includes a plurality of gear marks, which are arranged on the outer wall of the rotating cap 324 and correspond one-to-one to different gears formed by the locking slot 3251 and the locking block 3252 .

[0117] In some embodiments, referring to Figures 2 and 6 , the transmission portion 4 is disposed within the sliding groove 31 and slidably engages with the sliding groove 31. In some embodiments, the transmission portion 4 includes a transmission member 40 disposed within the sliding groove 31 and slidably engages with the sliding groove 31. In some embodiments, the transmission portion 4 is connected to the driving portion 2 via a connecting member disposed therebetween.

[0118] In some embodiments, at least some of the transmission parts 4 among the multiple transmission parts 4 include a first connecting member, which is fixedly connected to the transmission member 40 (such as a transmission rod), and the first connecting member protrudes from the outer wall surface of the support rod 30. Specifically, the sliding groove 31 is an open groove, and the side of the sliding groove 31 is connected to the outer wall surface of the support rod 30, so that the first connecting member can protrude from the support rod 30. In some embodiments, the driving part 2 includes one or more second connecting members 22, which are slidably engaged with the handheld part 1 through the sliding guide groove 14, and the second connecting member 22 can be connected and engaged with the first connecting member located on the transmission part 4. When the first connecting member and the second connecting member 22 are both located at the preset position in the first direction, when the adjustment part 3 drives the transmission part 40 to rotate relative to the handheld part 1 about the rotation axis, at least one first connecting member is switched to engage with one or more second connecting members 22, so that at least one of the multiple transmission parts 4 is connected to the driving part 2.

[0119] In some embodiments, the first connector is a male connector and the second connector 22 is a female connector. Alternatively, the first connector is a female connector and the second connector 22 is a male connector, and the male connector and the female connector snap into place. In some embodiments, the male connector can be a protrusion and the female connector can be a groove, and the protrusion can snap into the groove.

[0120] Taking the example of a groove 221 as the second connecting member provided on the driving unit 2 and a protrusion 41 as the first connecting member provided on the transmission member 40, with reference to Figures 2 and 3, when the sliding member 21 is provided as a split component, the groove 221 can be provided on both components of the sliding member 21. The notches on the two components of the sliding member 21 are interconnected, allowing them to be assembled to form a complete groove 221. When the sliding member 21 is integrally formed, the groove 221 is formed on the inner wall of the sliding member 21. In some embodiments, the groove 221 has open ends 2211 (see Figure 10), which are provided at both ends of the groove 221 (i.e., the connecting recess) around the rotation axis. The open ends 2211 are open, allowing the protrusion 41 to rotate in and out of the groove 221 as the adjustment unit 3 rotates. In some embodiments, the groove 221 includes blocking surfaces 2212 (see Figure 10) provided along both sides of the rotation axis to limit the sliding of the transmission unit 4 relative to the driving unit 2. In some embodiments, the protrusion 41 is disposed at the proximal end of the transmission member 40, which allows the transmission member 40 to have a sufficiently long pushing distance within a certain size, thereby preventing the overall size of the transmission member 40 from being too long, which would increase the overall size of the handle, and also preventing the transmission member 40 from having a pushing distance that is too short, which would affect its driving effect on the moving parts. Of course, in other embodiments, the protrusion 41 may also be located in the middle or distal end of the transmission member 40.

[0121] In some embodiments, the handheld portion 1 includes a positioning portion 16, which is used to position the protrusion 41 at a preset position. Specifically, the positioning portion 16 can position the protrusion 41 that is not connected to the driving portion 2 at a preset position in the first direction. The preset position refers to the position where the protrusion 41 can be connected to the groove 221 in the first direction. In some embodiments, the positioning portion 16 is located in the mounting cavity 13, forming a boss extending inward. The positioning portion 16 has at least a notch corresponding to the sliding guide groove 14, and the protrusion 41 connected to the groove 221 can continue to slide in the sliding groove 31 along the first direction through the notch. It should be understood that the positioning portion 16 is not limited to forming an inwardly extending boss. For example, the positioning portion 16 may include a pipe provided in the mounting cavity 13 of the handheld portion 1, and the end face of the pipe can position the protrusion 41 at the preset position in the first direction. In some embodiments, notches corresponding to multiple sliding guide grooves 14 are provided on the positioning portion 16. In some embodiments, the positioning portion 16 is disposed on a distal side of the protrusion 41, and the positioning portion 16 is disposed toward the proximal end of the handle 100. When the distal end of the protrusion 41 abuts the positioning portion 16, the protrusion 41 is located in a preset position. In some embodiments, the positioning portion 16 is disposed on a proximal side of the protrusion 41. When the proximal end of the protrusion 41 abuts the positioning portion 16, the protrusion 41 is located in a preset position. Multiple protrusions 41 are disposed on the same plane perpendicular to the first direction. When the protrusions 41 are in the preset position, one side end surface of each of the multiple protrusions 41 abuts one side end surface of the positioning portion 16, so that all protrusions 41 are located on the same plane. The position of a protrusion 41 not connected to the drive unit 2 along the first direction is restricted to the preset position by the positioning portion 16. When the drive unit 2 reaches the preset position, when it is necessary to switch a different protrusion 41 to cooperate with the groove 221, the adjustment unit 3 can be used to rotate the protrusion 41.

[0122] In some embodiments, the handle 100 further includes an elastic return member, which is elastic. The number of elastic return members can be the same as the number of transmission parts, that is, one elastic return member is provided for each transmission part. When the elastic return member is in a natural state, the first connecting member (i.e., the protrusion 41) is located in a preset position. After the first connecting member leaves the preset position, the elastic return member provides a restoring force for the first connecting member to return to the preset position. The natural state refers to the state when the elastic return member is not deformed, or the state in which the elastic return member does not generate an elastic restoring force. In some embodiments, the elastic return member can be located on the distal side of the preset position, and the transmission part 4 moves toward the distal end or the proximal end, and the elastic return member generates a restoring force, and the restoring force is directed toward the preset position. In some embodiments, the elastic member can be located on the proximal side of the preset position, and the transmission part 4 moves toward the distal end or the proximal end, and the elastic return member generates a restoring force, and the restoring force is directed toward the preset position. In some embodiments, one end of the elastic return member is connected to the transmission part 4, and the other end is connected to the adjustment part 3, so as to provide an elastic restoring force to the transmission part 4. By providing the elastic return member, the first connecting member that is not connected to the second connecting member can always remain in the preset position.

[0123] In some embodiments, the elastic return member can also provide a restoring force to return the first connector, which is connected to the second connector, to a preset position. When the operator operates the driving unit 2 to leave the preset position and then releases the driving unit 2, the driving unit 2 and the transmission unit 4 can return to the preset position under the action of the elastic return member. For more information about the elastic return member, please refer to Figures 9-10 and related content.

[0124] Fig. 9 is a cross-sectional view taken along line DD' in Fig. 5. Fig. 10 is an enlarged view of the portion E in Fig. 9 .

[0125] In some embodiments, referring to FIG. 9 and FIG. 10 , the handle 100 further includes an elastic reset member 6 , one end of the elastic reset member 6 is connected to the transmission portion 4 , and the other end is connected to the adjustment portion 3 .

[0126] In some embodiments, the elastic return member 6 is configured as a spring, which is disposed around the transmission member 40 (e.g., sleeved around the outside of the transmission member 40) to provide a more uniform force on the transmission portion 4. The elastic return member 6 can conform to the wall surface of the sliding groove 31 to prevent radial force on the elastic return member 6, thereby ensuring the elastic recovery effect of the elastic return member 6. The distal end of the elastic return member 6 is fixedly connected to the distal wall surface of the sliding groove 31, and the proximal end of the elastic return member 6 is fixedly connected to the protrusion 41.

[0127] It should be noted that the elastic reset member 6 and the aforementioned positioning portion 16 can be set at one or the other, and either of them can position the first connecting member (e.g., the bump 41) at a preset position. The elastic reset member 6 and the aforementioned positioning portion 16 can also be set at the same time to make positioning more accurate. In some embodiments, when the elastic reset member 6 is in a natural state, the bump 41 is located at a preset position. In order to further improve the stability of the positioning of the bump 41, a positioning portion 16 that can abut against the bump 41 can be provided to facilitate positioning of the bump 41.

[0128] FIG. 11 is an enlarged view of the E' portion shown in FIG. 9 .

[0129] In some embodiments, referring to FIG11 , the adjusting portion 3 further includes a guide cavity 33 located at the distal end of the support rod 30, and the diameter of the guide cavity 33 gradually decreases from the proximal end to the distal end of the support rod 30 to form an arcuate conical surface 331 that guides the distal end of the transmission portion 4 to extend toward the central axis of the support rod 30, so that after the transmission portion 4 extends into the guide cavity 33, it can cooperate with the arcuate conical surface 331 and gradually move toward the center position of the guide cavity 33, so that the transmission portion 4 can extend from the outlet end (i.e., the port with a smaller diameter) of the guide cavity 33, thereby facilitating the transmission portion 4 to transmit force to the moving part to control the movement of the moving part.

[0130] In some embodiments, the handheld portion 1 includes an identification area (not shown in the figures). When the driving portion 2 moves to the identification area, the driving portion 2 and the first connecting member that cooperates with the driving portion 2 are located in a preset position. In some embodiments, the identification area can be provided on the surface of the handheld portion 1. The identification area has characteristics that are different from other areas on the surface of the handheld portion 1. For example, the identification area has a color, pattern, or structure (such as a raised structure, a recessed structure, or a concave-convex structure, etc.) that is different from other areas on the surface of the handheld portion 1, so as to prompt the operator to switch operations, that is, to prompt the operator to switch from operating the driving portion 2 to operating the adjustment portion 3, so as to achieve the switching of the first connecting member connected to the driving portion 2.

[0131] In some embodiments, an additional positioning assembly can be further provided to provide positioning for the driver unit 2 along the first direction, so that the driver unit 2 can accurately remain in a preset position during movement in the first direction, and the protrusion 41 connected to the driver unit 2 can also accurately remain in the preset position. In some embodiments, the handle 100 also includes a first positioning assembly, which can be used to position the driver unit 2 and the protrusion 41 connected to the driver unit 2 at the preset position. When the driver unit 2 drives the transmission unit 4 from the distal end to the preset position, the first positioning assembly provides a first resistance that hinders the driver unit 2 from further proximal movement, thereby confining the driver unit 2 and the protrusion 41 connected to the driver unit 2 in the preset position. It is understood that in some cases, when the external force acting on the driver unit 2 is sufficiently large (e.g., greater than the first resistance), the first positioning assembly will no longer be able to confine the driver unit 2 to the preset position, and the driver unit 2 will continue to move proximally beyond the preset position. For more information about the first positioning assembly, please refer to Figures 12-17A, Figures 18-22, Figures 29-34, and related content. In some embodiments, in order to prevent the driving part 2 from sliding and failing to find the preset position, one or more second connectors 22 can always cooperate with at least one first connector, so that the second connector 22 can smoothly stay in the preset position, thereby switching the required first connector to form a cooperation.

[0132] In some embodiments, referring to FIG. 2 , the driving portion 2 drives the transmission portion 4 to move toward the proximal end until the predetermined position is reached when the pulling resistance is felt.

[0133] In some embodiments, when the driving unit 2 drives the transmission unit 4 to move from the distal end to the preset position, the transmission unit 4 controls the moving part to perform a first action. In some embodiments, when the driving unit 2 drives the transmission unit 4 to move beyond the preset position to the proximal end, the transmission unit 4 controls the moving part to perform a second action. The first action is different from the second action. For example, the first action includes performing a surgical operation, and when the driving unit 2 drives the transmission unit 4 to move from the distal end to the preset position, the transmission unit 4 controls the moving part to perform a surgical operation, such as clamping, electrocoagulation, cutting, sampling, etc. The second action includes the disengagement of the moving part from the transmission unit 4, and when the driving unit 2 drives the transmission unit 4 to move beyond the preset position to the proximal end, the moving part is controlled to disengage from the transmission unit 4.

[0134] In some embodiments, a release space 17 is provided on the handheld portion 1 at the proximal end of the driving portion 2. The release space 17 may be continuous with the sliding guide groove 14 or may be a section of the sliding guide groove 14 along the first direction. The release space 17 is located on the proximal side of the preset position, so that the driving portion 2 can drive the transmission portion 4 to move toward the proximal end of the handle 100 and slide into the release space 17, allowing the transmission portion 4 to detach from the moving component connected thereto. It should be noted that in actual application scenarios, if there is no need for the moving component to detach from the transmission portion 4, the transmission portion 4 does not need to control the moving component to perform the second action. Therefore, in some embodiments, the handheld portion 1 may not have the release space 17.

[0135] Figure 12 is a schematic diagram of the structure of a handle according to some embodiments of this specification. Figure 13 is an exploded view of a handle according to some embodiments of this specification. Figure 14 is a schematic diagram of the connection between the inner ring sleeve and the first positioning assembly and the second positioning assembly according to some embodiments of this specification.

[0136] The handle 100 shown in Figures 12-13 differs from the handle 100 shown in Figures 2-4B in that the sliding member 21 includes a grip ring 213 and an inner ring 214. The sliding member 21 is used to drive the transmission unit 4. A first positioning assembly 23 is provided between the sliding member 21 and the grip portion 1 to position the open end 2211 of the driving unit 2 so that the open end 2211 is aligned with the protrusion 41 at a predetermined position. When the transmission unit 4 drives the moving parts, the first positioning assembly 23 is used to position the open end 2211 of the groove 221 so that it is aligned with the protrusion 41.

[0137] In some embodiments, referring to Figures 12 and 13, the sliding member 21 includes a hand-held ring 213 and an inner ring 214, wherein the inner ring 214 is disposed within the hand-held ring 213. The hand-held ring 213 is configured as an integral structure, and blocks or rings may be provided at the proximal and distal ends of the hand-held ring 213 to form a groove for handholding. The inner ring 214 is configured as a split structure so that the inner ring 214 can be detachably mounted on the handheld portion 1, and a groove 221 is provided on the inner ring 214. In some embodiments, the inner ring 214 is a split structure divided by a first plane, which is the plane on which the axis of the handle 100 lies. The groove 221 is formed by splicing two parts of the inner ring 214 located on either side of the first plane.

[0138] FIG15 is a schematic structural diagram of a handheld portion according to yet other embodiments of the present specification.

[0139] In some embodiments, as shown in Figures 14 and 15, the first positioning assembly 23 includes a first slot 231, a second slot 232, a first limiting surface 233, a first positioning rod 234, and a first limiting block 235. The first slot 231 and the second slot 232 are disposed on the handheld portion 1, with the first slot 231 located at the distal end of the handheld portion 1 and the second slot 232 located at the proximal end of the handheld portion 1. The first slot 231 and the second slot 232 are interconnected, and a first limiting surface 233 facing the distal end is disposed between the first slot 231 and the second slot 232. The first positioning rod 234 is disposed on the sliding member 21 of the driving portion 2 and can slide along the first slot 231 and the second slot 232. The first limiting block 235 is fixed to the distal end of the first positioning rod 234 and is slidably engaged with the first slot 231. When the first limiting block 235 moves toward the proximal end along the first sliding groove 231 and abuts against the first limiting surface 233 , the first limiting surface 233 provides a first resistance to hinder the driving part 2 from moving toward the proximal end, so as to position the driving part 2 at a preset position.

[0140] In some embodiments, the first limiting surface 233 can be provided by a plate or block disposed between the first chute 231 and the second chute 232. The plate or block is provided with a passage for the first positioning rod 234 to pass through, and the distal side of the plate or block forms the first limiting surface 233. In some embodiments, the first limiting surface 233 can also be provided by a stepped surface disposed between the first chute 231 and the second chute 232. In some embodiments, the width H1 of the first chute 231 is greater than the width H2 of the second chute 232, so that the first limiting surface 233 facing the first chute 231 is formed at the connection between the first chute 231 and the second chute 232. The width H3 of the first limit block 235 is not greater than the width H1 of the first slide groove 231, and the width H3 of the first limit block 235 is greater than the width H2 of the second slide groove 232, so that when the first limit block 235 is fixed to the distal end of the first positioning rod 234, the first limit block 235 can abut against the first limit surface 233, so that the sliding member 21 (the hand-held ring sleeve 213 and the inner ring sleeve 214) is located in a preset position, thereby positioning the position of the groove 221, so that the open end 2211 of the groove 221 can face the protrusion 41 when the first limit block 235 abuts against the first limit surface 233, so that different protrusions 41 can be driven into the groove 221 by the adjusting part 3.

[0141] In some embodiments, the first stopper 235 has a first stopper surface 233 that is pressed against the first stopper surface 233 to disengage the first positioning rod 234 from its broken state. When the driving force applied to the driving unit 2 is greater than the first resistance, the first stopper 235 deforms, breaks, or falls off, and the driving unit 2 drives the transmission unit 4 to move proximally beyond the preset position. Specifically, when it is necessary to disengage the transmission unit 4 from the moving component connected thereto, the sliding member 21 (hand-held ring 213 and inner ring 214) and the transmission unit 4 connected thereto can be moved toward the proximal end of the handle into the release space 17. At this time, the first stopper 235 first presses against the first stopper surface 233 and is subjected to a reaction force from the first stopper surface 233, thereby breaking and disengaging from the first positioning rod 234. This prevents the first stopper 235 from restricting the sliding member 21 (hand-held ring 213 and inner ring 214) and the transmission unit 4 connected thereto from moving toward the proximal end of the handle into the release space 17.

[0142] FIG. 17B is a schematic diagram of a first positioning component and a second positioning component according to some other embodiments of the present specification.

[0143] In some embodiments, since the first limit block 235 cannot be restored after deformation, breaking or falling off, it cannot be positioned again by the first positioning assembly 23, which is not conducive to repeated use. Therefore, in order to make the first positioning assembly 23 reusable, in other embodiments, referring to Figure 17B, the first positioning assembly 23 includes a first spring piece 2331 and a first positioning block 2332, and the first chute and the second chute can be connecting grooves of equal width and interconnected (the connecting groove is not shown in Figure 17B). Among them, the first spring piece 2331 is provided on the handheld portion 1 and extends into the connecting groove, and the first positioning block 2332 is provided on the driving portion (not shown in Figure 17B), and the first positioning block 2332 can slide within the connecting groove. In some embodiments, the first spring piece 2331 includes a fixed end and a free end, the fixed end of the first spring piece 2331 is connected to the handheld portion 1, the fixed end of the first spring piece 2331 is located on the proximal side of the preset position, and the free end of the first spring piece 2331 extends into the connecting groove towards the distal end. In some embodiments, the first positioning block 2332 is disposed on the sliding member of the driving unit 2. The first positioning block 2332 includes a proximal inclined surface, which is oriented toward the proximal end of the handheld unit 1 and is inclined toward the fixed end of the first elastic piece 2331. In some embodiments, the angle formed between the proximal inclined surface of the first positioning block 2332 and the inner side surface of the first elastic piece 2331 is an obtuse angle. The inner side surface of the first elastic piece 2331 is the surface of the first elastic piece 2331 that faces the fixed end. When the driving unit 2 moves toward the proximal end, the proximal inclined surface abuts the free end of the first elastic piece 2331, creating a large resistance, thereby positioning the driving unit at a preset position. When it is necessary to make the driving unit 2 continue to move toward the proximal end beyond the preset position, the first positioning block 2332 can be continued to be driven to press the free end of the first elastic piece 2331 toward the proximal end. The free end of the first elastic piece 2331 deflects along the proximal inclined surface toward the outside of the connecting groove. When the free end of the first elastic piece 2331 moves out of the connecting groove, the driving unit 2 can pass over the first elastic piece 2331 and move out of the preset position. In some embodiments, the first elastic piece 2331 is elastic. When the external force is removed, the first elastic piece 2331 can return to its natural state and re-enter the connecting groove. When the driving unit approaches the preset position toward the distal end, the first positioning block 2332 (for example, the surface of the first positioning block 2332 facing the distal end) can squeeze the first elastic piece 2331 to move out of the connecting groove, allowing the driving unit to pass over the first elastic piece 2331 and return to the preset position.

[0144] FIG18 is a schematic structural diagram of a handheld portion and a driving portion according to some other embodiments of the present specification.

[0145] The difference between the handheld portion and the driving portion shown in Figure 18 and the handheld portion and the driving portion shown in Figures 12 and 13 is that the sliding member 21 includes a handheld sleeve 215. The handheld sleeve 215 is sleeved outside the handheld portion 1 and is used to drive the transmission portion 4 to operate.

[0146] Figure 19 is a cross-sectional view of the handle and drive unit's BB when the drive unit is in a preset position. Figure 20 is an enlarged view of section C in Figure 19. Figure 21 is a cross-sectional view of the handle and drive unit's BB when the drive unit drives the transmission unit into the release space. Figure 22 is an enlarged view of section D in Figure 19. Figures 19 and 20 illustrate another embodiment of the first positioning assembly 23.

[0147] In some embodiments, as shown in Figures 18-20, the first positioning assembly 23 includes a spring piece 236, a stopper 2361, a first sliding section 237, a second sliding section 238, and a limiting step 239. The spring piece 236 is disposed on the handheld sleeve 215 of the driving unit 2. The spring piece 236 includes a connecting end connected to the handheld sleeve 215 and a free end separated from the handheld sleeve 215. The stopper 2361 is disposed on the free end of the spring piece 236. The first sliding section 237 and the second sliding section 238 are groove structures provided on the handheld portion 1 (in some embodiments, the first sliding section 237 is a groove structure provided on the handheld portion 1, and the second sliding section 238 is the outer wall surface of the handheld portion 1 itself). The first sliding section 237 is located at the distal end of the handheld portion 1, and the second sliding section 238 is located at the proximal end of the handheld portion 1. The first sliding section 237 and the second sliding section 238 are interconnected, and a distal-facing limiting step 239 is provided between the first sliding section 237 and the second sliding section 238. The stop portion 2361 is slidably connected to the first sliding section 237. When the stop portion 2361 moves toward the proximal end along the first sliding section 237 and abuts against the limiting step 239, the limiting step 239 provides a first resistance to the stop portion 2361 to hinder the movement of the driving unit 2 toward the proximal end, thereby positioning the driving unit 2 at a preset position.

[0148] In some embodiments, as shown in FIG18 , the connection end of the spring 236 can be located at the distal end of the spring 236 , with its free end located at the proximal end of the spring 236 . Alternatively, the connection end of the spring 236 can be located at the proximal end of the spring 236 , with its free end located at the distal end of the spring 236 , without limitation. In some embodiments, the radial dimension of the first sliding segment 237 (e.g., groove depth) is greater than the radial dimension of the second sliding segment 238 (e.g., groove depth or lack of groove structure), thereby forming a distal limiting step 239 at the junction of the first sliding segment 237 and the second sliding segment 238 . In some embodiments, the stopper 2361 is provided to protrude radially from the handheld portion 1 .

[0149] As shown in Figure 20, when the handheld sleeve 215 is slid, the stopper 2361 slides along the first sliding section 237 and contacts the limit step 239, the driving unit 2 reaches the preset position. At this time, the adjustment unit 3 can be operated to switch the remaining protrusions 41 to cooperate with the grooves 221, thereby driving different transmission units 4 to connect with different moving parts. In some embodiments, the spring piece 236 is elastic. The driving force applied by the handheld sleeve 215 causes the spring piece 236 that contacts the limit step 239 to deform, generating an elastic force. When the elastic force increases to a certain level, the stopper 2361 connected to the free end of the spring piece 236 can pass over the limit step 239 and continue to slide along the second sliding section 238 toward the proximal end. After the external force disappears, the spring piece 236 will return to its natural state, as shown in Figures 21 and 22. The hand-held sleeve 215 and the transmission unit 4 connected thereto can be moved toward the proximal end of the handle into the release space 17 to disconnect the transmission unit 4 from the moving parts connected thereto. In some embodiments, the surface where the stopper 2361 contacts the limiting step 239 can be an arc surface, and / or the limiting step 239 can be a circular transition, so that the stopper 2361 can smoothly pass over the limiting step 239 under the action of the elastic force.

[0150] When the hand-held sleeve 215 is moved distally again, the stopper 2361 slides distally along the second sliding section 238. Under the driving force applied by the driving unit 2, the stopper 2361 can smoothly cross the limit step 239 and reposition itself to the preset position. The first positioning assembly 23 shown in Figures 18-22 does not break or fall off during the process of positioning at the preset position and moving to the release space 17, and can be repeatedly positioned using the first positioning assembly 23.

[0151] Fig. 16 is a cross-sectional view taken along line GG' in Fig. 15. Fig. 17A is an enlarged view of a portion G1 in Fig. 16 .

[0152] In some embodiments, as shown in Figures 16 and 17, the handle 100 further includes a second positioning assembly 24. When the driving unit 2 drives the transmission unit 4 to move from the proximal end to the preset position, the second positioning assembly 24 provides a second resistance that prevents the driving unit 2 from continuing to move toward the distal end. In other words, the driving unit 2 drives the transmission unit 4 connected thereto to move toward the proximal end of the handle into the release space 17. The transmission unit 4 can be disengaged from the connected moving parts. At this time, the driving unit 2 slides toward the distal end again and can be positioned using the second positioning assembly 26 so that the open end 2211 of the groove 221 is in a preset position to switch with the unconnected protrusion 41. It should be noted that in the embodiments of the present application, not only the first positioning assembly 23 and the second positioning assembly 24 can be set at the same time, but in some embodiments, only the first positioning assembly 23 or only the second positioning assembly 24 can also be set. In other embodiments, the first positioning assembly 23 and / or the second positioning assembly 24 can also be used in combination with the elastic reset member 6 shown in Figures 9-10 to make positioning more accurate.

[0153] In some embodiments, the second positioning assembly 24 includes a third slot 241, a fourth slot 242, a second limiting surface 243, a second positioning rod 244, and a second limiting block 245. The third slot 241 and the fourth slot 242 are formed on the handheld portion 1, with the third slot 241 located at the distal end of the handheld portion 1 and the fourth slot 242 located at the proximal end of the handheld portion 1. The third slot 241 and the fourth slot 242 are interconnected. A radial depth D1 of the third slot 241 is less than a radial depth D2 of the fourth slot 242, and at least a portion of the fourth slot 242 is located proximal to the third slot 241. Alternatively, the proximal end of the third slot 241 is provided with the second limiting surface 243, or the distal end of the fourth slot 242 is provided with the second limiting surface 243. Referring to FIG14 , a second positioning rod 244 is disposed on the sliding member 21 of the driving unit 2. The proximal end of the second positioning rod 244 is connected to the driving unit 2. A second limiting block 245 is disposed at the distal end of the second positioning rod 244. The second positioning rod 244 can slide along the third and fourth sliding grooves 241 and 242. The second limiting block 245 is slidably engaged with the fourth sliding groove 242. When the second limiting block 245 moves distally along the fourth sliding groove 242 and abuts against the second limiting surface 243, the second limiting surface 243 provides a second resistance to hinder the distal movement of the driving unit 2, thereby positioning the driving unit 2 at a predetermined position.

[0154] In some embodiments, due to the radial depth difference between the third chute 241 and the fourth chute 242, and because at least a portion of the fourth chute 242 is located on the proximal side of the third chute 241, the distal end of the fourth chute 242 is connected to the proximal end of the third chute 241, and the second limiting surface 243 is formed on the proximal end surface of the third chute 241 or the distal end surface of the fourth chute 242. Here, taking the second limiting surface 243 formed on the distal end surface of the fourth chute 242 as an example, in some embodiments, a stopper 2431 extending toward the proximal end is formed on the second limiting surface 243 near the outer side of the third chute 241, so as to form a stopper groove 2432 between the second limiting surface 243 and the stopper 2431. When the second limiting block 245 abuts against the second limiting surface 243, the second limiting block 245 can be embedded in the stop groove 2432, limiting the sliding of the driving part 2 toward the distal end of the handheld part 1. At this time, the sliding member 21 (the handheld ring 213 and the inner ring 214) is at a preset position, thereby positioning the position of the groove 221, so that the open end 2211 of the groove 221 can face the protrusion 41 when the second limiting block 245 abuts against the second limiting surface 243, facilitating the rotation of different protrusions 41 into the groove 221 under the drive of the adjustment part 3. Since the first positioning assembly 23 cannot accurately locate the position of the groove 221 after the first limiting block 235 breaks and detaches from the first positioning rod 234, the second limiting block 245 can be used to abut against the second limiting surface 243 for positioning, so as to switch different protrusions 41 to cooperate with the groove 221, thereby driving different transmission parts 4 to detach from the moving parts connected thereto.

[0155] In some embodiments, the second positioning rod 244 is elastic. When the second limiting block 245 is located in the fourth chute 242, the second positioning rod 244 is in a natural state, that is, an unstretched state. When the second limiting block 245 is located in the third chute 241, the second positioning rod 244 has an elastic restoring force to return to the natural state. When the second limiting block 245 moves from the distal end to the proximal end, from the third chute 241 to the fourth chute 242, under the action of the elastic restoring force, the second positioning rod 244 drives the second limiting block 245 to be pulled back to the fourth chute 242, so that the sliding member 21 can be repositioned to the preset position under the second resistance provided by the second limiting surface 243 to hinder the movement of the driving unit 2 toward the distal end.

[0156] In some embodiments, the second stopper 245 has a second stopper surface 243 that is pressed against the second stopper surface 243 to release the second positioning rod 244 from being pulled apart. Specifically, when the driving force applied to the driving unit 2 is greater than the second resistance, the second stopper 245 deforms, breaks, or falls off, and the driving unit 2 drives the transmission unit 4 to move beyond the preset position toward the distal end.

[0157] Similar to the first positioning assembly 23, in some embodiments, since the second limiting block 245 cannot be restored after deformation, breaking or falling off, it cannot be positioned again by the second positioning assembly 24, which is not conducive to repeated use. Therefore, in order to make the second positioning assembly 24 reusable, in other embodiments, referring to Figure 17B, the second positioning assembly 24 includes a second spring (e.g., second spring 2333) and a second positioning block. In some embodiments, the second positioning block and the first positioning block 2332 can be the same positioning block. The second spring is provided on the handheld portion 1 and extends into the connecting groove, and the second positioning block is provided on the driving portion, and the second positioning block can slide in the connecting groove. In some embodiments, the second spring includes a fixed end and a free end, the fixed end of the second spring is connected to the handheld portion 1, the fixed end of the second spring is located at the distal end of the preset position, and the free end of the second spring extends into the connecting groove toward the proximal end. In some embodiments, the second positioning block includes a distal bevel, the distal bevel is toward the distal end of the handheld portion 1, and is inclined toward the fixed end of the second spring. In some embodiments, the angle formed between the distal inclined surface of the second positioning block and the inner surface of the second elastic sheet is an obtuse angle. The inner surface of the second elastic sheet is the surface of the second elastic sheet facing the fixed end. When the driving unit 2 moves proximally, the second positioning block (e.g., the surface of the second positioning block facing the distal end) can squeeze the second elastic sheet out of the connecting slot, allowing the driving unit 2 to pass over the second elastic sheet and reach the preset position. In some embodiments, the second elastic sheet is elastic. When the distal inclined surface abuts the free end of the second elastic sheet, the second elastic sheet can return to its natural state after the external force is removed. When the driving unit 2 moves distally from the proximal side of the preset position, the distal inclined surface abuts the free end of the second elastic sheet, creating a greater resistance force, thereby positioning the driving unit 2 in the preset position. Because the distal inclined surface of the second elastic sheet is inclined toward the distal end and toward the fixed end of the second elastic sheet, the free end of the second elastic sheet deflects along the distal inclined surface toward the outside of the connecting slot. When the free end of the second elastic sheet moves out of the connecting slot, the driving unit 2 can pass over the second elastic sheet and move out of the preset position.

[0158] It should be noted that in some embodiments, the first positioning assembly 23 and the second positioning assembly 24 can be provided simultaneously. In this case, as shown in FIG17B , the first positioning assembly 23 and the second positioning assembly 24 share a positioning block (a first positioning block or a second positioning block), the first spring clip and the second spring clip are provided on the proximal side and the distal side of the preset position, respectively, and the proximal inclined surface and the distal inclined surface are provided on the side of the positioning block facing the proximal end and the distal end, respectively. When the positioning block is located between the first spring clip and the second spring clip, the driving unit 2 is located at the preset position.

[0159] In other embodiments, the second positioning assembly 24 may also have a structure similar to the first positioning assembly 23 shown in Figure 18. Specifically, the second positioning assembly 24 includes a fourth spring piece, a second stopper, a third sliding segment, a fourth sliding segment, and a second limiting step (the spring piece 236 in the first positioning assembly 23 may also be referred to as the third spring piece, the stopper 2361 may also be referred to as the first stopper, and the limiting step 239 may also be referred to as the first limiting step). The fourth spring piece is disposed on the handheld sleeve of the driving unit 2. The fourth spring piece includes a connecting end connected to the handheld sleeve and a free end separated from the handheld sleeve. The second stopper is disposed at the free end of the fourth spring piece. The third and fourth sliding segments are disposed on the handheld portion 1, with the third sliding segment located at the proximal end of the handheld portion 1 and the fourth sliding segment located at the distal end of the handheld portion 1. The third and fourth sliding segments are interconnected, and a second limiting step toward the proximal end is disposed between the third and fourth sliding segments. The second stopper is slidably connected to the third sliding segment. When the second stop portion moves toward the distal end along the third sliding section and abuts against the second limiting step, the second limiting step provides the second stop portion with a second resistance to hinder the driving portion 2 from moving toward the distal end, so as to position the driving portion 2 at a preset position. Continuing to increase the external force to the driving portion 2 can cause the second stop portion to cross the second limiting step, and the driving portion 2 can continue to move toward the distal end. It should be noted that, in this embodiment, the second positioning component 24 can be provided simultaneously with the first positioning component 23 of any of the aforementioned embodiments. Taking the second positioning component 24 of this embodiment and the first positioning component shown in the aforementioned Figure 18 as an example, the third spring piece and the fourth spring piece can be provided simultaneously on the driving portion 2. For example, the third spring piece and the fourth spring piece can be distributed alternately along the circumference of the driving portion 2. The third sliding section and the first sliding section can be the same sliding section, and the first limiting step and the second limiting step are respectively located at the two ends of the third sliding section / the first sliding section (that is, the first limiting step is located at the proximal end and the second limiting step is located at the distal end).

[0160] Fig. 29 is an exploded view of a handle according to some embodiments of the present disclosure. Fig. 29 shows another embodiment of the first positioning assembly 23.

[0161] The handle 100 shown in FIG29 differs from the handle 100 shown in FIG23-28 in that the first positioning assembly 23 includes a stopper 2310. The stopper 2310 is rotatable relative to the handheld portion 1 in a first direction, and the stopper 2310 switches between a stopper position and a release position. When the stopper 2310 is in the stopper position, the driving portion 2 slides along the first direction to a predetermined position and contacts the stopper 2310. When the stopper 2310 is in the release position, the movement of the driving portion 2 is not restricted by the stopper 2310. In some embodiments, the stopper 2310 at least partially protrudes from the outer surface of the adjustment portion 3. The stopper 2310 protrudes radially outward from the adjustment portion 3, allowing the stopper 2310 to switch to the sliding path of the driving portion 2 (i.e., the stopper position), thereby blocking the driving portion 2 (handheld sleeve 215) and positioning the driving portion 2 in the predetermined position. In some implementations, the resisting portion 2310 can be controlled by a separate rotation control unit. The resisting portion 2310 is connected to the rotation control unit, and the rotation control unit is operated to control the resisting portion 2310 to rotate independently of the adjustment portion 3. In some implementations, to facilitate operator control, the resisting portion 2310 is disposed on the adjustment portion 3 and connected to the support rod 30 of the adjustment portion 3. Rotation of the rotating cap 324 can cause the support rod 30 to rotate, and the resisting portion 2310 rotates with the rotation of the support rod 30 within the handheld portion 1, thereby switching between a resisting position and a released position.

[0162] FIG30 is a cross-sectional view of a support rod according to some embodiments of the present specification where a stop portion is provided; FIG31 is a schematic structural diagram of a support rod according to some embodiments of the present specification.

[0163] In some embodiments, as shown in Figures 30 and 31 , a stopper 2310 is provided protruding from the outer surface of the support rod 30. Specifically, the stopper 2310 is a fan-shaped protrusion disposed about the rotation axis of the support rod 30. The stopper 2310 extends radially outward from the support rod 30 to block the driving unit 2 from sliding along its path. In some embodiments, to cooperate with the stopper 2310, a limiter 2311 is provided on the inner side of the handheld sleeve 215 of the driving unit 2 near the support rod 30. The limiter 2311 extends and protrudes toward the support rod 30. In some embodiments, the limiter 2311 may be the proximal outer wall of the groove 221.

[0164] Figure 32 is a schematic structural diagram of the situation when the limiting portion and the resisting portion conflict with each other according to some embodiments of the present specification; Figure 33 is a schematic structural diagram of the situation when the resisting portion is in the released position according to some embodiments of the present specification.

[0165] As shown in FIG32 , the resisting portion 2310 rotates out from the mounting cavity 13 of the handheld portion 1 toward the sliding guide groove 14. At this time, the resisting portion 2310 is in the resisting position. The handheld sleeve 215 is pulled toward the proximal end. When the limiting portion 2311 of the handheld sleeve 215 contacts the resisting portion 2310, the handheld sleeve 215 reaches the preset position, and the transmission portion 4 connected to the driving portion 2 can be switched as needed. In some embodiments, a groove 221 that is connected to the transmission portion 4 is provided on the limiting portion 2311. The groove 221 extends through the limiting portion 2311 around the rotation axis of the support rod 30 to adjust the first connecting member of the transmission portion 4 to rotate into the groove 221 and connect with the driving portion 2.

[0166] As shown in Figure 33, when the hand-held sleeve 215 needs to be moved to the release space, the resisting part 2310 is rotated again so that the resisting part 2310 is rotated into the mounting cavity 13 of the hand-held part 1. At this time, the resisting part 2310 is in the release position, and the limiting part 2311 is not interfered with by the resisting part 2310. The hand-held sleeve 215 can continue to slide toward the proximal end and reach the release space.

[0167] FIG34 is a schematic structural diagram of a handheld portion according to some embodiments of the present specification.

[0168] In some embodiments, to allow the retaining portion 2310 to extend radially outward as far as possible toward the support rod 30, the radial dimension of the retaining portion 2310 should be as large as possible. To accommodate the radial dimension of the retaining portion 2310, a receiving portion 2312 is provided within the mounting cavity 13 of the handle 1. The receiving portion 2312 is a groove extending radially around the support rod 30. When the retaining portion 2310 is rotated into the receiving portion 2312 of the handle 1, the retaining portion 2310 is in the released position. In some embodiments, the angle α of the fan-shaped protrusion constituting the retaining portion 2310 is less than or equal to the circumferential angle of the receiving portion 2312. In some embodiments, the angle α of the fan-shaped protrusion can range from 170° to 180°. In some embodiments, the angle α of the fan-shaped protrusion can range from 175° to 180°. In some embodiments, the angle α of the fan-shaped protrusion can range from 177° to 179°. In some embodiments, the angle α of the fan-shaped protrusion can range from 178°.

[0169] 35A to 37D are schematic diagrams illustrating the process of gear switching of the handle 100 according to some embodiments of this specification. The gear switching process is the process of switching different transmission members 40 to be connected or disconnected with the driving unit 2.

[0170] In some embodiments, referring to Figures 35A to 35D, the hand-held sleeve 215 includes two grooves (groove 221-1 and groove 221-2), and the handle 100 is provided with two transmission members, each of which includes a first connecting member (first connecting member 41-1 and first connecting member 41-2). The handle 100 is in the first gear position. At this time, the first connecting member (such as the first connecting member 41-1) on one of the transmission members is located in the groove 221-1. At this time, when the hand-held sleeve 215 is pushed or pulled, the transmission member (such as the first connecting member 41-1) moves accordingly. When it is necessary to switch gears, the hand-held sleeve 215 is pulled toward the proximal end until the limit portion 2311 contacts the stop portion 2310. At this time, the hand-held sleeve 215 reaches the preset position, and the gear switch can be performed.

[0171] In some embodiments, referring to Figures 36A to 36D , when the handle 100 is switched to the second gear, the rotating cap 324 is rotated, the first connecting member 41-1 enters the handheld portion 1, and the first connecting member 41-2 on the other transmission member enters the groove 221-2. Similar to the case where the handle 100 is in the first gear, the handle 100 in the second gear can also drive the transmission member connected thereto to move by pushing or pulling the handheld sleeve 215.

[0172] In some embodiments, referring to Figures 37A to 37D, when it is necessary to release the moving parts connected to the transmission part, the rotating cap 324 can be rotated again to switch the handle 100 to the third gear. At this time, the blocking part 2310 is retracted into the hand-held part 1, the first connecting part 41-1 is located in the groove 221-2, and the first connecting part 41-2 is located in the groove 221-1. Pulling the hand-held sleeve 215 backward can achieve the synchronous release of multiple moving parts.

[0173] 38-42B illustrate yet another embodiment of the first positioning assembly 23 .

[0174] The difference between the handle 100 shown in FIG38 and the handle 100 shown in FIG23 to FIG28 is that the first positioning assembly 23 includes a locking member 2320. The locking member 2320 is detachably connected to the handheld portion 1.

[0175] As shown in Figures 39 and 40, when the retaining member 2320 is connected to the preset connection position of the handheld portion 1, the driving portion 2 slides along the first direction (e.g., from the distal end to the proximal end) to the preset position and contacts the retaining member 2320, and the retaining member 2320 positions the driving portion 2 at the preset position. In some embodiments, the handheld portion 1 is provided with a retaining groove 101 that engages with the retaining member 2320. In some embodiments, the size of the retaining groove 101 along the first direction can be the same as or similar to the size of the retaining member 2320 along the first direction. By setting the retaining groove 101 at the preset connection position, the retaining member 2320 can be directly connected to the preset connection position of the handheld portion 1 when it is engaged with the retaining groove 101. In some embodiments, the dimension of the engaging slot 101 along the first direction can be greater than the dimension of the retaining member 2320 along the first direction. After the retaining member 2320 is engaged with the engaging slot 101, it can slide along the engaging slot 101. When the retaining member 2320 slides to the proximal end of the engaging slot 101, the retaining member 2320 is connected to the preset connection position of the handheld portion 1. In some embodiments, the engaging slot 101 is a sliding guide slot 14, and the proximal end of the sliding guide slot 14 has a restriction portion. When the retaining member 2320 slides until it abuts against the restriction portion, the retaining member 2320 is connected to the preset connection position of the handheld portion 1.

[0176] As shown in Figure 41, when the connection between the retaining member 2320 and the handheld part 1 is released, the movement of the driving part 2 is not restricted by the retaining member 2320. Therefore, the operator can quickly remove the movement restriction of the driving part 2 by removing the retaining member 2320, which is simple to operate and easy to use.

[0177] As shown in Figures 42A and 42B, the locking member 2320 includes a locking portion 2324 and a disassembly portion 2323. The locking portion 2324 has a clamping state and an open state. When the locking portion 2324 is in the clamping state, the locking member 2320 is locked in the locking slot 101. When the locking portion 2324 is in the open state, the locking member 2320 can be removed from the locking slot 101. When the disassembly portion 2323 is subjected to force, it can drive the locking portion 2324 to move, thereby switching the locking portion 2324 between the clamping state and the open state.

[0178] In some embodiments, the locking member 2320 may include two locking arms 2322 disposed opposite each other, and an elastic connecting arm 2321 connecting the two locking arms 2322. The elastic connecting arm 2321 may be connected to the middle section of the two locking arms 2322. The portion (e.g., the end) of the locking arm 2322 located on one side of the elastic connecting arm 2321 constitutes the locking portion 2324, and the portion (e.g., the end) located on the other side of the elastic connecting arm 2321 constitutes the disassembly portion 2323. With this arrangement, the locking portion 2324 and the disassembly portion 2323 form a lever structure with the connection point between the elastic connecting arm 2321 and the locking arm 2322 as the fulcrum. By applying a disassembly force F to the disassembly portion 2323 to cause the disassembly portion 2323 to move relative to each other, the locking portion 2324 can be controlled to enter the open state.

[0179] It is understood that the structure of the retaining member 2320 shown in Figures 42A and 42B does not limit the retaining member 2320. In some alternative embodiments, the retaining member 2320 can also be designed as a clamp structure, with the clamp head of the clamp structure constituting the engaging portion and the clamp tail constituting the disassembly portion. In some embodiments, the clamp head and the clamp tail of the clamp structure are hingedly connected by a pivot, and an elastic member such as a torsion spring is provided at the clamp tail to maintain the clamping state.

[0180] FIG43 is a schematic structural diagram of a medical device according to some embodiments of the present specification.

[0181] As shown in FIG43 , the medical device 1000 includes an operating handle 100 as described in any of the above embodiments, and also includes a plurality of moving parts 200. The moving parts 200 are connected to the transmission parts 4 of the operating handle 100 in a one-to-one correspondence. The adjustment part 3 of the operating handle 100 drives different transmission parts 4 to connect to the driving part 2 of the operating handle to drive different moving parts 200 to move. In some embodiments, the medical device 1000 includes a conveying assembly 300, the proximal end of which is connected to the handle 100; the plurality of moving parts 200 are disposed at the distal end of the conveying assembly 30, and each moving part 200 is in transmission connection with at least one of the plurality of transmission parts 4. The conveying assembly 300 is used to connect and pull the moving parts 200. The conveying assembly 300 can also be used to provide the required substances (such as gas, liquid, etc.) for medical behavior or medical operation.

[0182] In some embodiments, the handle 100 includes an adjustment portion 3, which includes a rotating cap 324 (see Figures 23-28) and a support rod 30 that are connected to each other. The rotating cap 324 is rotatably connected to the distal end of the handheld portion 1. To simplify the structure of the medical device 1000, the rotating cap 324 can be extended to form a connection port for connecting to the delivery assembly 300.

[0183] Figure 44 is a schematic diagram of the structure of a conveying assembly according to some embodiments of the present disclosure. Figure 45 is a schematic diagram of the structure of the movable variation of Figure 44 .

[0184] In some embodiments, as shown in Figures 44 and 45, the delivery assembly 300 includes a sheath tube 310 and a cannula 320. A traction rope is disposed within the sheath tube 310, and the cannula 320 is disposed at the proximal end of the sheath tube 310. The sheath tube 310 is connected by the cannula 320 fixed to the sheath tube 310 and mating with a rotating cap 324. In some embodiments, the rotating cap 324 is a hollow structure having a distal opening. The proximal end of the sheath tube 310 extends into the distal opening of the rotating cap 324 through the cannula 320. The cannula 320 is disposed within the rotating cap 324. The proximal end of the cannula 320 is provided with a flange structure that can prevent the cannula 320 from escaping from the distal opening of the rotating cap 324.

[0185] When the medical device 1000 enters a natural human cavity along with the endoscope, it bends with the endoscope due to the various curvatures of the natural cavity. When the delivery assembly 300 bends, the traction rope inside it also bends. Because the traction rope is a columnar structure with a certain thickness, when it bends, the traction rope has an extrusion side with a smaller bend radius and a tension side directed along the bend radius from the extrusion side. Within the sheath 310, the traction rope deviates toward the tension side. Because one end of the traction rope connected to the moving component 200 is fixed, the traction rope near the handle 100 will retract into the sheath 310. This phenomenon is known as "idle travel." To compensate for this "idle travel," i.e., the length of the traction rope retracted into the sheath 310, in some embodiments, the sheath 310 further includes a retaining ring 311 and an elastic member 312. The retaining ring 311 is disposed outside the rotating cap 324, and the elastic member 312 is disposed between the retaining ring 311 and the rotating cap 324. In some embodiments, the limiting ring 311 is fixed to the outer wall of the sheath 310, the elastic member 312 is sleeved on the outside of the sheath 310, the distal end of the elastic member 312 is connected or in contact with the limiting ring 311, and the proximal end of the elastic member 312 is connected or in contact with the rotating cap 324; a reserved space is reserved in the rotating cap 324 for the sheath 310 and the sleeve 320 to move toward the proximal end. As shown in Figure 44, when the medical device 1000 enters the human body with an endoscope and an "idle stroke" occurs, since the medical device 1000 has a traction rope and is in the non-release position (the transmission part connected to the drive part is not in the release space), the traction rope is always fixed in the handheld part 1. As shown in Figure 45, the elastic part 312 is compressed by the compression force generated by the idle stroke. At this time, the sheath 310 moves to the reserved space in the rotating cap 324 under the drive of the compression force. The stroke of its movement is the compression amount of the elastic part 312, which is equivalent to the sheath 310 shortening its own length under the action of the limit ring 311 and the elastic part 312 to compensate for the idle stroke.

[0186] FIG46 is a flowchart illustrating a method for operating a medical device according to some embodiments of this specification.

[0187] As shown in FIG46 , an embodiment of this specification provides a medical device operating method 380 , which is applied to the medical device 1000 shown in FIG43 . The operating method 380 includes:

[0188] Step 381: The driving part and the plurality of transmission parts of the control handle are in preset positions.

[0189] In some embodiments, the driving portion of the operating handle 100 slides along a first direction, and the driving portion is positioned in a preset position by a first positioning assembly (such as a first positioning assembly 23). In some embodiments, referring to Figures 14 and 15, the driving portion 2 slides along the first direction, driving the first limit block 235 to move toward the proximal end along the first slide groove 231. When the first limit block 235 abuts against the first limit surface 233, the first limit surface 233 provides a first resistance that hinders the movement of the driving portion 2 toward the proximal end, thereby positioning the driving portion 2 in the preset position. In some embodiments, referring to Figures 18-20, the driving portion 2 slides along the first direction, driving the stop portion 2361 to move toward the proximal end along the first sliding section 237. When the stop portion 2361 abuts against the limit step 239, the limit step 239 provides a first resistance that hinders the movement of the driving portion 2 toward the proximal end for the stop portion 2361, thereby positioning the driving portion 2 in the preset position. In some embodiments, with reference to Figure 29, the driving unit 2 is pulled toward the proximal end, and when the limiting portion 2311 of the driving unit 2 conflicts with the resisting portion 2310, the driving unit 2 reaches the preset position. In other embodiments, with reference to Figures 9 and 10, the driving unit 2 can be made to reach the preset position by utilizing the elastic reset member 6. Specifically, the external force of the driving unit 2 is removed so that the driving unit 2 and the transmission unit 4 engaged therewith return to the preset position under the action of the resilience of the elastic reset member 6. In some embodiments, with reference to Figure 2, the driving unit 2 drives the transmission unit 4 to move toward the proximal end and reaches the preset position until the resistance to pulling is felt. In some embodiments, as shown in Figures 39 and 40, when the retaining member 2320 is connected to the preset connection position of the handheld portion 1, the driving unit 2 slides along the first direction (such as sliding from the distal end to the proximal end) to the preset position and contacts the retaining member 2320, and the retaining member 2320 positions the driving unit 2 at the preset position.

[0190] Step 382 : driving the plurality of transmission parts to rotate in a first direction until a target transmission part among the plurality of transmission parts cooperates with the driving part.

[0191] In some embodiments, the adjusting portion is rotated to drive the multiple transmission components to rotate about a first direction. In some embodiments, referring to Figures 6 and 23, the support rod 30 is rotated by rotating the rotating cap 324, and the transmission component 4 disposed on the support rod 30 rotates accordingly. In some embodiments, the support rod 30 is rotated until the first connecting member provided on the target transmission component mates with the second connecting member 22 on the driving component 2. In some embodiments, the support rod 30 is rotated until the protrusion 41 provided on the target transmission component engages with the groove 221 on the driving component 2.

[0192] Step 383 : Control the driving unit to drive the target transmission unit to slide along the first direction to control the moving component connected to the target transmission unit to perform an action.

[0193] In some embodiments, the driving part is driven toward the distal or proximal end of the operating handle so that the driving part drives the target transmission part to slide synchronously along the first direction to drive the moving part connected to the target transmission part to perform an action (such as opening and closing or sliding).

[0194] In some embodiments, the driving unit is controlled to move from the distal end to the preset position to drive the moving component to perform the first action. In some embodiments, the preset position may be the initial position of the driving unit. During use of the medical device, the driving unit may be at the distal end of the operating handle. The driving unit is controlled to return from the distal end to the preset position. The driving unit can drive the transmission unit to control the moving component to perform the first action, such as a diagnostic or treatment operation, such as clamping, electrocoagulation, cutting, etc. In some embodiments, after the corresponding moving component has completed movement, the driving unit drives the transmission unit to synchronously slide to the preset position. Referring to step 381, the driving unit and multiple transmission units are positioned at the preset position.

[0195] In some embodiments, after the driving unit and the plurality of transmission units are repositioned at the preset positions, steps 382 and 383 may be repeated, or the driving unit may be controlled to move proximally beyond the preset position to drive the moving component to perform a second action.

[0196] In some embodiments, the driving unit drives the transmission unit to slide to the release space, and the moving part can be driven to perform a second action, for example, the moving part is disengaged from the connected transmission unit. In some embodiments, referring to Figures 13-15, a driving force greater than the first resistance is applied to the driving unit 2, the first limit block 235 is deformed, broken or detached, and the driving unit 2 drives the transmission unit 4 to move past the preset position toward the proximal end to the release space 17. In some embodiments, referring to Figures 20-22, a driving force is applied to the driving unit 2, so that the spring piece 236 that contacts the limit step 239 is deformed and generates an elastic force. When the elastic force increases to a certain extent, the stop portion 2361 connected to the free end of the spring piece 236 can pass the limit step 239 and continue to slide toward the proximal end along the second sliding section 238. In some embodiments, referring to Figures 32-33, the resisting portion 2310 is rotated so that the resisting portion 2310 is in the released position, the limiting portion 2311 is not interfered with by the resisting portion 2310, and the driving portion 2 can continue to slide toward the proximal end to reach the release space (such as the release space 17). In some embodiments, referring to Figures 41-42B, by applying a disassembly force F to the disassembly portion 2323 of the retaining member 2320 to cause the disassembly portion 2323 to move relative to each other, the engaging portion 2324 of the retaining member 2320 is controlled to enter the open state, and the retaining member 2320 can be removed from the handheld portion 1. The movement of the driving portion 2 is no longer restricted by the retaining member 2320, and the driving portion 2 can continue to slide toward the proximal end to reach the release space (such as the release space 17).

[0197] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

[0198] Some embodiments of the present application also provide another method for operating a medical device 1000. In some embodiments, referring to FIG47 , the medical device 1000 includes the handle 100 of any of the aforementioned embodiments and multiple moving components 200. The moving components 200 are connected to the transmission portion 4 of the operating handle in a one-to-one correspondence. The adjustment portion 3 of the operating handle drives different transmission portions 4 to connect to the driving portion 2 of the operating handle, thereby driving different moving components 200.

[0199] Furthermore, the transmission part 4 includes a transmission rod 40 and a soft traction rope, wherein the transmission rod 40 is connected to the moving part 200 through the soft traction rope, so that when the transmission rod 40 moves toward the proximal end of the operating handle to the release space 17, the soft traction rope can break, thereby disconnecting the transmission rod 40 and the moving part connected thereto. Of course, in other embodiments, the soft traction rope can also be made using a connecting block that is easy to break.

[0200] In some embodiments, referring to Figures 48-59, a method of operating the medical device 1000 includes:

[0201] The driving part 2 and the transmission part 4 of the operating handle are both in an initial state of the initial position, wherein the initial position is the preset position.

[0202] In the initial position, the drive adjustment part 3 drives the different transmission parts 4 to be connected to the drive part 2 .

[0203] The driving part 2 drives the transmission part 4 connected thereto to slide, thereby driving the moving component 200 connected to the transmission part 4 to move.

[0204] The method may further include: utilizing the driving part 2 to drive different transmission parts 4 connected thereto to slide to the release space 17 located on the handheld part 1 , so that the transmission parts 4 are separated from the moving parts 200 connected thereto.

[0205] Specifically, when the driving unit 2 and the transmission unit 4 are used to drive the moving component 200 to move, the operation specifically includes:

[0206] Sub-step 1.1: Initialize the operating handle's driving portion 2 and transmission portion 4 in their initial positions. At this point, the first stopper 235 abuts against the first stopper surface 233, the protrusion 41 aligns with the groove 221, and the second stopper 245 is located within the third slot 241 (see Figures 48 to 50).

[0207] Sub-step 1.2: Rotate the adjusting portion 3 so that one of the protrusions 41 is engaged with the groove 221 .

[0208] Sub-step 1.3: Drive the driving unit 2 so that it causes the transmission unit 4 to slide synchronously, thereby driving the moving component 200 connected to the transmission unit 4 to move (e.g., open or close or slide). During this process, the first limit block 235 moves along the first slide groove 231, and the second limit block 245 moves along the third slide groove 241 (see Figures 51 to 53).

[0209] Sub-step 1.4: After the corresponding moving part 200 finishes moving, the driving part 2 is driven toward the proximal end of the operating handle so that the driving part 2 drives the transmission part 4 to slide synchronously until the first limit block 235 abuts against the first limit surface 233 and stops after encountering resistance. At this time, the driving part 2 and the transmission part 4 of the operating handle are both in the starting state of the initial position.

[0210] Sub-step 1.5: Repeat sub-steps 1.2 to 1.4 above.

[0211] Furthermore, when the driving part 2 drives the transmission part 4 to slide to the release space 17 so that the transmission part 4 is separated from the moving component 200 connected thereto, the operation specifically includes:

[0212] Sub-step 2.1: Set the operating handle's driving portion 2 and transmission portion 4 to their initial positions. At this point, the first stopper 235 abuts against the first stopper surface 233, the protrusion 41 aligns with the groove 221, and the second stopper 245 is located within the third slot 241 (see Figures 48 to 50).

[0213] Sub-step 2.2: Rotate the adjusting portion 3 so that one of the protrusions 41 is engaged with the groove 221 .

[0214] Sub-step 2.3: Drive the driving part 2 toward the proximal end of the operating handle until the first limit block 235 is broken.

[0215] Sub-step 2.4: Continue to drive the driving unit 2 and the transmission unit 4 toward the proximal end to the release space 17 and continue to move proximally until the transmission unit 4 is separated from the connected moving component 200. During this process, the first positioning rod 234 moves along the second sliding groove 232, and the second limiting block 245 falls into the fourth sliding groove 242 and moves along the fourth sliding groove 242 (see Figures 54 to 56).

[0216] Sub-step 2.5: Drive the driving part 2 toward the far end of the operating handle so that the driving part 2 drives the transmission part 4 to slide synchronously until the second limit block 245 is against the second limit surface 243 and stops after encountering resistance. At this time, the driving part 2 and the transmission part 4 of the operating handle are both in the starting state of the initial position, see Figures 57 to 59.

[0217] Sub-step 2.6: Repeat the above steps Sub-step 2.2, Sub-step 2.4, and Sub-step 2.5.

[0218] There are many ways to bring the driving portion 2 and the transmission portion 4 of the operating handle into the initial position. In addition to the first chute 231, the second chute 232, the first limiting surface 233, the first positioning rod 234, the first limiting block 235, the third chute 241, the fourth chute 242, the second limiting surface 243, the second positioning rod 244, and the second limiting block 245 in this embodiment, in other embodiments, an elastic return member 6 may be used. The operation steps specifically include: releasing the driving portion 2 so that the driving portion 2 and the transmission portion 4 engaged therewith return to the initial position under the action of the elastic return member 6. In other embodiments, the driving portion 2 and the transmission portion 4 of the operating handle can also be returned to the initial position by using a retaining member 2320. The specific steps include: moving the driving portion 2 distally to the distal end of the preset connection position of the engaging slot 101, connecting the retaining member 2320 to the preset connection position, and then moving the driving portion 2 until it abuts against the retaining member 2320. In other embodiments, the resisting portion 2310 returns the driving portion 2 and the transmission portion 4 of the operating handle to their initial positions. Specifically, the steps for this include moving the driving portion 2 distally to the distal end of the resisting portion 2310, rotating the resisting portion 2310 so that the resisting portion 2310 is in the resisting position, and then moving the driving portion 2 until it abuts against the resisting portion 2310. In other embodiments, the driving portion 2 and the transmission portion 4 of the operating handle can also be returned to their initial positions using the limiting step 239 and the spring 236. Specifically, the steps for this include moving the driving portion 2 distally until the resisting portion 2310 of the spring 236 passes over the limiting step 239 and falls into the first sliding section 237, and then abutting the resisting portion 2310 against the limiting step 239. In some embodiments, the driving portion 2 drives the transmission portion 4 to move proximally until it reaches its initial position when it encounters a pulling resistance.

[0219] It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects that may be produced may be any one or a combination of the above, or any other possible beneficial effects.

[0220] The basic concepts have been described above. It will be apparent to those skilled in the art that the detailed disclosure above is merely illustrative and does not limit the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are suggested in the present application and remain within the spirit and scope of the exemplary embodiments of the present application.

[0221] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0222] In addition, unless expressly stated in the claims, the order of the processing elements and sequences described in this application, the use of alphanumeric characters, or the use of other names are not intended to limit the order of the processes and methods of this application. Although the above disclosure discusses some of the invention embodiments currently considered useful through various examples, it should be understood that such details are only for illustrative purposes, and the attached claims are not limited to the disclosed embodiments. On the contrary, the claims are intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the embodiments of this application. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0223] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0224] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0225] Each patent, patent application, patent application disclosure, and other materials, such as articles, books, specifications, publications, documents, etc., cited in this application is hereby incorporated by reference in its entirety. This includes application history documents that are inconsistent with or conflict with the content of this application, as well as documents (currently or subsequently attached to this application) that limit the broadest scope of the claims of this application. It should be noted that if the descriptions, definitions, and / or use of terms in the accompanying materials of this application are inconsistent or conflicting with the content of this application, the descriptions, definitions, and / or use of terms in this application shall prevail.

[0226] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other variations may also fall within the scope of this application. Therefore, by way of example and not limitation, alternative configurations of the embodiments of this application may be considered consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly introduced and described in this application.

Claims

1. A handle for a medical device, comprising: A handheld part, a driving part, and multiple transmission parts for transmission connection with multiple moving parts at the distal end of the medical device; The hand-held part is slidably matched with the driving part; The driving part is switchably connected to at least one of the plurality of transmission parts.

2. The handle according to claim 1, wherein: The handle further comprises an adjusting portion, and the adjusting portion cooperates with the plurality of transmission portions to drive at least one of the plurality of transmission portions to be switchably connected to the driving portion.

3. The handle according to claim 2, wherein: The adjusting part is rotatably connected to the hand-held part, and the rotation axis of the rotatable connection is parallel to a first direction, which is the sliding direction of the sliding fit; the adjusting part is slidably fitted with the multiple transmission parts along the first direction.

4. The handle according to claim 3, wherein: At least some of the multiple transmission parts include a first connecting member, and the driving part includes one or more second connecting members. When the adjusting part rotates around the rotation axis relative to the hand-held part, at least one of the multiple first connecting members can be switchably matched with the second connecting member, so that at least one of the multiple transmission parts is connected to the driving part.

5. The handle according to claim 4, wherein: The first connecting member is a connecting protrusion, and the second connecting member is a connecting concave; or, the first connecting member is a connecting concave, and the second connecting member is a connecting protrusion.

6. The handle according to claim 4, wherein: The handheld part includes a supporting shell, a sliding guide groove along a first direction is provided on the supporting shell, and the second connecting member is slidably matched with the handheld part through the sliding guide groove; the supporting shell encloses an installation cavity, and the adjusting part is arranged in the installation cavity.

7. The handle according to claim 4, wherein: When the driving part and the first connecting member are both located at preset positions in the first direction, the adjusting part can be driven to switch the transmission part connected to the driving part.

8. The handle according to claim 7, wherein: When the driving part drives the transmission part to move from the distal end to the preset position, the transmission part controls the moving part to perform a first action; and / or, when the driving part drives the transmission part to move beyond the preset position to the proximal end, the transmission part controls the moving part to perform a second action.

9. The handle according to claim 8, wherein: The hand-held part includes a supporting shell, a sliding guide groove is provided on the supporting shell along a first direction, and the second connecting member is slidingly matched with the hand-held part through the sliding guide groove; the supporting shell encloses an installation cavity, and the adjustment part is arranged in the installation cavity; the sliding guide groove includes a release space, and when the driving part drives the transmission part to move toward the proximal end beyond the preset position, the driving part enters the release space.

10. The handle according to claim 7, wherein: The handheld part includes a positioning part, which is arranged at a side of a distal end of the first connecting member, and when the distal end of the first connecting member abuts against the positioning part, the first connecting member is located at the preset position, wherein the first connecting member abutting against the positioning part is separated from the driving part; And / or, the hand-held part includes a positioning part, and the positioning part is arranged on the proximal side of the first connecting member. When the proximal end of the first connecting member abuts against the positioning part, the first connecting member is located at the preset position, wherein the first connecting member abutting against the positioning part is disengaged from the driving part.

11. The handle according to claim 10, wherein: The hand-held part includes a supporting shell, a sliding guide groove along a first direction is provided on the supporting shell, and the second connecting member slides with the hand-held part through the sliding guide groove; the supporting shell encloses an installation cavity, and the adjusting part is arranged in the installation cavity; the positioning part is a boss arranged in the installation cavity, and the boss has at least a notch corresponding to the sliding guide groove.

12. The handle according to claim 7 or 10, wherein: The handheld part includes a marking area, and when the driving part moves to the marking area, the driving part and a first connecting member matched with the driving part are located at the preset position.

13. The handle according to any one of claims 7 to 12, wherein: Each of the multiple transmission parts includes an elastic return member. When the elastic return member is in a natural state, the first connecting member is located at the preset position. After the first connecting member leaves the preset position, the elastic return member provides a restoring force for the first connecting member to return to the preset position.

14. The handle according to any one of claims 7 to 13, wherein: The handle further comprises a first positioning assembly. When the driving part drives the transmission part to move from the distal end to the preset position, the first positioning assembly provides a first resistance to prevent the driving part from continuing to move toward the proximal end.

15. The handle according to claim 14, wherein: The first positioning component comprises: A first sliding section and a second sliding section are provided on the handheld portion, wherein a limiting step toward a distal end is provided between the first sliding section and the second sliding section; A spring sheet and a stopper are arranged on the driving part, wherein the spring sheet comprises a connecting end connected to the driving part and a free end separated from the driving part, wherein one of the connecting end and the free end is located at the distal end, and the other of the connecting end and the free end is located at the proximal end, and the stopper is arranged at the free end; The driving portion is located at the preset position, and the limiting step and the stopping portion provide a first resistance that hinders the driving portion from moving toward the proximal end.

16. The handle according to claim 14, wherein: The first positioning component comprises: A first slide groove and a second slide groove are arranged on the handheld portion, wherein a first limiting surface facing the distal end is arranged between the first slide groove and the second slide groove; A first positioning rod is arranged on the driving part, and a first limiting block is arranged on the first positioning rod. When the first limiting block abuts against the first limiting surface, the driving part is located at the preset position, and the first limiting surface provides a first resistance to hinder the driving part from moving toward the proximal end.

17. The handle of claim 14, wherein the first positioning assembly comprises: A resisting portion rotatable about a first direction relative to the hand-held portion, the resisting portion switching between a resisting position and a releasing position by rotating; When the resisting portion is located at the resisting position, the driving portion slides along the first direction to a preset position and contacts the resisting portion; When the blocking portion is located at the releasing position, the movement of the driving portion is not restricted by the blocking portion.

18. The handle according to claim 17, wherein the blocking portion at least partially protrudes from an outer surface of the adjusting portion.

19. The handle according to claim 17, wherein the blocking portion is connected to the adjusting portion, and when the adjusting portion rotates, the adjusting portion drives the blocking portion to rotate synchronously; or, The blocking portion is connected to a rotation control portion, and the rotation control portion controls the blocking portion to rotate independently of the adjusting portion. 20 . The handle according to claim 17 , wherein the hand-held portion is provided with a receiving portion, and when the blocking portion is located at the release position, the blocking portion is placed in the receiving portion.

21. The handle of claim 14, wherein: The first positioning component comprises: A locking member detachably connected to the handheld portion; When the locking member is connected to the preset connection position of the handheld part, the driving part slides along the first direction to the preset position and contacts the locking member; When the connection between the locking member and the hand-held part is released, the movement of the driving part is not restricted by the locking member.

22. The handle of claim 21, wherein: The clamping member includes a clamping portion and a disassembling portion. The clamping portion includes a clamping state and an open state. The movement of the disassembling portion drives the clamping portion to switch between the clamping state and the open state.

23. The handle of claim 22, wherein: The locking member includes two locking arms and an elastic connecting arm arranged opposite to each other, the elastic connecting arm connects the two locking arms, the portion of the locking arm located on one side of the elastic connecting arm constitutes the disassembly portion, and the portion of the locking arm located on the other side of the elastic connecting arm constitutes the engaging portion.

24. A handle according to any one of claims 7 to 14, wherein: The handle further comprises a second positioning assembly. When the driving part drives the transmission part to move from the proximal end to the preset position, the second positioning assembly provides a second resistance to prevent the driving part from continuing to move toward the distal end.

25. The handle of claim 24, wherein: The second positioning component comprises: A third slide groove and a fourth slide groove are arranged on the handheld portion, wherein the radial depth of the third slide groove is smaller than the radial depth of the fourth slide groove, and at least a portion of the fourth slide groove is located on a proximal side of the third slide groove; a second limiting surface is arranged at the proximal end of the third slide groove, or a second limiting surface is arranged at the distal end of the fourth slide groove; A second positioning rod is arranged on the driving part, and a second limiting block is arranged on the second positioning rod. When the second limiting block abuts against the second limiting surface, the driving part is located at the preset position, and the second limiting surface provides a second resistance to hinder the driving part from moving toward the distal end.

26. The handle of claim 25, wherein: The second positioning rod is elastic. When the second limiting block is located in the fourth sliding groove, the second positioning rod is in a natural state. When the second limiting block is located in the third sliding groove, the second positioning rod has an elastic restoring force to restore to the natural state.

27. A handle according to any one of claims 3 to 26, wherein: The adjusting part includes a rotation driving assembly and a support rod. The rotation driving assembly is configured to drive the support rod to rotate when subjected to an external force. A plurality of sliding grooves are provided on the support rod along the first direction. Each of the plurality of transmission parts is slidably matched with the adjusting part through a sliding groove.

28. The handle of claim 27, wherein: The rotation drive assembly comprises a rotation cap, the rotation cap is rotationally connected to the hand-held part, and the rotation cap is slidably matched with the support rod along the axial direction of the support rod.

29. The handle of claim 28, wherein: The support rod comprises a groove arranged along the axial direction, and the rotating cap comprises a limit platform protruding radially inward, wherein the limit platform at least partially extends into the groove and slidably cooperates with the groove; or, The support rod comprises a limiting platform protruding radially outward, the rotating cap comprises a groove arranged along the axial direction, and the limiting platform at least partially extends into the groove and slidably cooperates with the groove.

30. The handle according to claim 29, wherein a gear structure for positioning the rotation angle of the adjusting part is provided between the adjusting part and the hand-held part, and the gear structure comprises a card slot and a card block that can be engaged.

31. The handle of claim 27, wherein: The rotation driving assembly comprises a shifting rod, the hand-held part comprises a shifting rod guide groove, and the shifting rod passes through the shifting rod guide groove and extends out of the outside of the hand-held part.

32. A medical device comprising: A handle as claimed in any one of claims 1 to 31; A delivery assembly, the proximal end of which is connected to the handle; A plurality of moving parts are arranged at the distal end of the conveying assembly, and each of the moving parts is in driving connection with at least one of the plurality of driving parts.

33. The medical device according to claim 32, wherein: The handle comprises an adjusting portion, the adjusting portion comprises a rotating cap and a supporting rod connected to each other, the rotating cap is rotatably connected to the distal end of the handheld portion; The delivery assembly comprises a sheath tube and a cannula, wherein the cannula is arranged at the proximal end of the sheath tube; The rotating cap is a hollow structure with a distal opening, the proximal end of the sheath tube extends into the rotating cap through the distal opening of the rotating cap, the sleeve is arranged inside the hollow structure, and the distal opening limits the displacement of the sleeve toward the distal end.

34. The medical device according to claim 33, wherein: The sheath tube further comprises a limiting ring and an elastic member, wherein the limiting ring is arranged outside the rotating cap, and the elastic member is arranged between the limiting ring and the rotating cap.

35. A method for operating a medical device, applied to the medical device according to any one of claims 32 to 34, the method comprising: The driving part and the multiple transmission parts of the control handle are in preset positions; driving the plurality of transmission parts to rotate around a first direction until a target transmission part among the plurality of transmission parts cooperates with the driving part; The driving part is controlled to drive the target transmission part to slide along the first direction to control the moving part connected to the target transmission part to perform an action.

36. The method of claim 35, wherein: The method further comprises: Controlling the driving part to move from the distal end to the preset position to drive the moving component to perform a first action; or / and, The driving portion is controlled to move toward the proximal end beyond the preset position to drive the moving component to perform a second action.

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