CN116999095B - Locking mechanism of positioning element, surgical instrument and surgical system - Google Patents
Locking mechanism of positioning element, surgical instrument and surgical system Download PDFInfo
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- CN116999095B CN116999095B CN202210468092.0A CN202210468092A CN116999095B CN 116999095 B CN116999095 B CN 116999095B CN 202210468092 A CN202210468092 A CN 202210468092A CN 116999095 B CN116999095 B CN 116999095B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 71
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 210000003484 anatomy Anatomy 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims 3
- 238000001356 surgical procedure Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 14
- 238000005299 abrasion Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 230000000694 effects Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
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Abstract
本申请公开了一种定位元件的锁紧机构、定位元件、手术器械及手术系统。定位元件的锁紧机构包括本体和锁紧构件；本体上设有容纳部，容纳部用于容纳定位元件的至少一部分；锁紧构件包括锁紧开关、滑动组件和第一弹性件，锁紧开关与本体相接，滑动组件被构造为能沿轴向移动，第一弹性件设置于滑动组件与锁紧开关之间；锁紧开关被构造为具有可切换的锁紧状态和活动状态，锁紧状态下，锁紧开关推动第一弹性件使滑动组件的第二端移动至容纳部与定位元件相抵定位，活动状态下，滑动组件由容纳部中退出。本申请能够简化定位元件的锁紧操作、定位元件受到的锁紧力可以调节，促使定位元件有效锁紧。
The present application discloses a locking mechanism of a positioning element, a positioning element, a surgical instrument and a surgical system. The locking mechanism of the positioning element includes a body and a locking member; a housing portion is provided on the body, and the housing portion is used to accommodate at least a portion of the positioning element; the locking member includes a locking switch, a sliding assembly and a first elastic member, the locking switch is connected to the body, the sliding assembly is constructed to be able to move axially, and the first elastic member is arranged between the sliding assembly and the locking switch; the locking switch is constructed to have a switchable locking state and an active state, in the locking state, the locking switch pushes the first elastic member to move the second end of the sliding assembly to the housing portion to abut against the positioning element for positioning, and in the active state, the sliding assembly withdraws from the housing portion. The present application can simplify the locking operation of the positioning element, and the locking force applied to the positioning element can be adjusted, so as to effectively lock the positioning element.
Description
Technical Field
The application belongs to the technical field of medical instruments, and particularly relates to a locking mechanism of a positioning element, the positioning element, a surgical instrument and a surgical system.
Background
With the development of technology, positioning technology is increasingly widely applied in the medical instrument industry. In order to achieve a localization of a target object, it is often necessary to provide a localization element at the target object or at a reference location. The position of the positioning element is acquired, so that the target object or the position of the positioning element on the target object is determined.
However, the inventor of the present application found that the locking operation in the installation process of the positioning element in the related art is complex, and the locking force applied to the positioning element after the locking operation is completed cannot be adjusted, and if the locking force is too small, the installation loosening condition is easy to occur.
Disclosure of Invention
The embodiment of the application provides a locking mechanism of a positioning element, the positioning element, a surgical instrument and a surgical system, which can simplify the locking operation of the positioning element, can adjust the locking force applied to the positioning element and can promote the positioning element to be effectively locked.
In a first aspect, an embodiment of the present application provides a locking mechanism of a positioning element, where the locking mechanism of the positioning element includes a body and a locking member, the body is provided with an accommodating portion, the accommodating portion is used for accommodating at least a portion of the positioning element, the locking member includes a locking switch, a sliding assembly and a first elastic element, the locking switch is connected to the body, the sliding assembly is configured to be capable of moving along an axial direction, the first elastic element is disposed between the sliding assembly and the locking switch, the locking switch is configured to have a switchable locking state and an active state, in the locking state, the locking switch pushes the first elastic element to move a second end of the sliding assembly to the accommodating portion to abut against the positioning element for positioning, and in the active state, the sliding assembly is withdrawn from the accommodating portion.
According to some embodiments of the first aspect of the present application, when the locking switch is switched between the active state and the locked state, the first elastic member is deformed to apply the locking force of the fixed positioning element to the sliding assembly.
According to any of the foregoing embodiments of the first aspect of the present application, the slide assembly is configured to be adjustable in length.
According to any of the foregoing embodiments of the first aspect of the present application, the slide assembly includes a first member and a second member, the first member and the second member being engaged and the engagement length being adjustable.
According to any of the foregoing embodiments of the first aspect of the present application, the first component is a guide sleeve, the second component is a jackscrew, and the guide sleeve is threaded with the jackscrew.
According to any one of the embodiments of the first aspect of the present application, the sliding assembly further includes a guide shaft, a first end of the guide shaft is connected to the locking switch, a second end of the guide shaft faces the direction in which the accommodating portion is located, a guide sleeve is slidably sleeved on the guide shaft, the first end of the guide sleeve abuts against a portion of the locking switch, and a jackscrew is detachably connected to the second end of the guide sleeve, and corresponds to the accommodating portion.
According to any of the foregoing embodiments of the first aspect of the present application, the first elastic member is a disc spring, and a washer is provided between the disc spring and the locking switch.
According to any one of the embodiments of the first aspect of the present application, the guide sleeve has a cylindrical structure, a first end of the guide sleeve has an end plate, a mounting hole through which the guide shaft passes is formed in the end plate, a second end of the guide sleeve is open, and the jackscrew is connected to the second end of the guide sleeve.
According to any of the foregoing embodiments of the first aspect of the present application, the second end of the guide shaft is provided with a first boss protruding in a radial direction thereof, and a diameter of the first boss is larger than a diameter of the mounting hole.
According to any one of the foregoing embodiments of the first aspect of the present application, the locking member further includes a second elastic element, the second elastic element is sleeved on the guide shaft, and the second elastic element is located between the end plate and the first boss.
According to any of the foregoing embodiments of the first aspect of the present application, the second elastic member is a wave spring.
According to any of the foregoing embodiments of the first aspect of the present application, the lock switch includes a mounting shaft and a cam handle, the mounting shaft being rotatably connected to the cam handle.
According to any one of the foregoing embodiments of the first aspect of the present application, the cam handle includes a cam portion having a flat surface formed on an outer peripheral surface thereof at a position most distant from the rotational axis thereof.
In a second aspect, the embodiment of the application provides a positioning element, wherein the positioning element is used for providing positioning information, and the positioning element is locked and positioned on the locking mechanism of the positioning element provided by any embodiment of the first aspect.
In a third aspect, embodiments of the present application provide a surgical instrument comprising a tracer portion comprising a plurality of locating elements as provided in the second aspect, and a functional portion having a predetermined positional relationship with the tracer portion, the functional portion being for intraoperative engagement with an anatomical structure.
In a fourth aspect, embodiments of the present application provide a surgical system comprising an implement portion for engaging a surgical tool and a positioning portion for positioning at the implement portion or the surgical tool to indicate an orientation, the positioning portion comprising a plurality of positioning elements as provided in the third aspect.
In the locking mechanism, the positioning element, the surgical instrument and the surgical system of the embodiment of the application, the locking mechanism of the positioning element can accommodate the positioning element by arranging the accommodating part on the body, and the locking mechanism of the positioning element can drive the sliding component to act by operating the locking switch when the positioning element is required to be positioned by arranging the locking component with the locking switch, the sliding component and the first elastic component on the body, the second end of the sliding component moves towards the direction close to the accommodating part until contacting with the positioning element and pressing the positioning element on the accommodating part, so that the positioning element is locked and positioned, and the locking force applied to the positioning element by the sliding component can be automatically and elastically adjusted through the first elastic piece, so that the locking degree of the positioning element can be adjusted, the positioning element is not easy to displace, and the positioning element is promoted to be effectively locked; meanwhile, in the locking mechanism of the positioning element, the surgical instrument and the surgical system, the locking mechanism of the positioning element has very simple structure, and is convenient for the disassembly and the installation of the positioning element.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are needed to be used in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.
FIG. 1 is a schematic perspective view of a locking mechanism of a positioning element according to some embodiments of the present application;
FIG. 2 is an exploded view of a locking member of a locking mechanism of a positioning element according to some embodiments of the application;
FIG. 3 is a schematic view of a locking mechanism of a positioning element according to some embodiments of the present application;
FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic view of a locking mechanism of a positioning element according to some embodiments of the present application;
FIG. 6 is a schematic cross-sectional view taken along line B-B of FIG. 5;
FIG. 7 is an exploded view of the guide shaft and the jackscrew of the slide assembly of the locking member of the locking mechanism of the positioning element of some embodiments of the present application;
FIG. 8 is a schematic view of a locking mechanism of a positioning element according to some embodiments of the present application with the positioning element disposed therein but unlocked;
FIG. 9 is a schematic view of a locking mechanism of a positioning element according to other embodiments of the present application with the positioning element disposed therein but unlocked;
FIG. 10 is a schematic diagram illustrating a locking mechanism of a positioning element according to some embodiments of the present application;
fig. 11 is a schematic cross-sectional view taken along line C-C of fig. 10.
Reference numerals illustrate:
1. The body, 11, a first mounting part, 111, a containing hole, 1111, an inclined plane, 112, a containing part, 113, a second boss, 114, a connecting lug, 12, a second mounting part, 13, a connecting arm, 2, a locking member, 21, a locking switch, 211, a mounting shaft, 212, a cam handle, 2121, a handle part, 2122, a cam part, 21221, a plane, 22, a sliding component, 221, a guide shaft, 2211, a first boss, 222, a guide sleeve, 2221, an end plate, 2222, a mounting hole, 223, a jackscrew, 23, a first elastic piece, 24, a gasket, 25, a second elastic piece, 3 and a positioning element.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the particular embodiments described herein are meant to be illustrative of the application only and not limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises the element.
It should be understood that the term "and/or" as used herein is merely an association relationship describing the associated object, and means that there may be three relationships, e.g., a and/or B, and that there may be three cases where a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Accordingly, it is intended that the present application covers the modifications and variations of this application provided they come within the scope of the appended claims (the claims) and their equivalents. The embodiments provided by the embodiments of the present application may be combined with each other without contradiction.
As described above, the present inventors have found that the positioning element in the related art is not firmly installed, the positioning element is easily displaced relative to the structure for installation, resulting in lower positioning accuracy of the positioning element, and in order to solve the problem of lower positioning accuracy, the related art has made many improvements to the existing installation structure, and in this process, it has been found that although the installation firmness of the positioning element can be improved to some extent, new problems, such as complex structure and large size, are brought about, and the vibration-proof loosening structure is not provided, and the vibration-proof loosening performance can be improved only by means of increasing the pretightening force, which is achieved by using a wrench or by increasing the size of a handle, which is not suitable for some cases of compact space and inconvenient use of a wrench, and the requirements on machining and assembling accuracy are high, no abrasion compensation, resulting in too high machining cost and too short service life.
Therefore, in view of the above problems, embodiments of the present application provide a locking mechanism for a positioning element, a surgical instrument, and a surgical system, which can solve the technical problems of low positioning accuracy, complex structure, no vibration-proof loose structure, high processing and assembly accuracy, and no wear compensation in the related art.
The locking mechanism of the positioning element can accommodate the positioning element by arranging the accommodating part on the body, and can operate the locking switch to drive the sliding assembly to act when the positioning element is required to be positioned by arranging the locking component with the locking switch, the sliding assembly and the first elastic piece on the body, so that the second end of the sliding assembly moves towards the direction close to the accommodating part until contacting with the positioning element and pressing the sliding assembly on the accommodating part, the locking positioning of the positioning element is realized, the locking force of the sliding assembly on the positioning element can be automatically and elastically adjusted through the first elastic piece, the locking degree of the positioning element can be adjusted, the positioning element is not easy to displace, and the positioning element is enabled to be effectively locked, and meanwhile, the locking mechanism of the positioning element in the embodiment of the application has very simple structure and is convenient for the disassembly and the installation of the positioning element.
The following first describes a locking mechanism of a positioning element according to an embodiment of the present application.
As shown in fig. 1 to 11, the embodiment of the present application provides a locking mechanism of a positioning element, the locking mechanism of the positioning element comprises a body 1 and a locking member 2, the body 1 is provided with a containing part 112, the containing part 112 is used for containing at least one part of the positioning element 3, the locking member 2 comprises a locking switch 21, a sliding component 22 and a first elastic piece 23, the locking switch 21 is connected with the body 1, the sliding component 22 is configured to move circumferentially, in particular, a first end of the sliding component 22 is connected with the locking switch 21, a second end of the sliding component 22 is opposite to the containing part 112, the first elastic piece 23 is arranged between the sliding component 22 and the locking switch 21, the locking switch 21 is configured to have a switchable locking state and an active state, in the locking state, the locking switch 21 pushes the first elastic piece 23 to enable the second end of the sliding component 22 to move to the containing part 112 to be abutted against the positioning element 3, and in the active state, the sliding component 22 is withdrawn from the containing part 112.
The locking switch 21 may be a toggle switch, a rotary switch, a mechanical switch or an electronic switch, the sliding assembly 22 is generally formed into a column structure, the sliding assembly 22 can move along the axial direction of the sliding assembly towards the direction approaching or separating from the accommodating portion 112 under the driving of the locking switch 21, and the second end of the sliding assembly 22 is used for applying a locking force to the positioning element 3 to achieve the locking positioning of the positioning element 3.
The locking mechanism of the positioning element provided in the embodiment of the present application, wherein, when the locking switch 21 is switched between the active state and the locking state, the first elastic member 23 deforms to apply the locking force of the fixed positioning element 3 to the sliding assembly 22, and simultaneously prevent the locking switch 21 from rigidly contacting the first end of the sliding assembly 22.
The locking force applied to the positioning element 3 can be adjusted through the elastic deformation state of the first elastic piece 23, so that the positioning element 3 is ensured to be effectively locked.
Embodiments of the present application provide a locking mechanism for a positioning element wherein the slide assembly 22 is configured to be adjustable in length. To accommodate positioning elements 3 having different dimensions, it is also understood that the locking forces to which the positioning element 3 is subjected can be adjusted from another aspect.
The embodiment of the present application provides a locking mechanism for a positioning element, wherein the sliding assembly 22 includes a first component and a second component, and the first component and the second component are engaged and the engagement length is adjustable, so as to realize the length adjustment of the sliding assembly 22.
Specifically, the first component is a guide sleeve 222, the second component is a jackscrew 223, the guide sleeve 222 is in threaded connection with the jackscrew 223, and the joint length between the guide sleeve 222 and the jackscrew 223 can be adjusted by adjusting the threaded connection depth of the guide sleeve and the jackscrew 223, so that the overall length of the sliding assembly 22 is adjusted.
As shown in fig. 2, the sliding assembly 22 of the locking mechanism of the positioning element according to the embodiment of the present application further includes a guide shaft 221, a first end of the guide shaft 221 is connected to the locking switch 21, a second end of the guide shaft 221 faces the direction of the accommodating portion 112, a guide sleeve 222 is slidably sleeved on the guide shaft 221, the first end of the guide sleeve 222 abuts against a portion of the locking switch 21, and a top wire 223 is detachably connected to the second end of the guide sleeve 222, and the top wire 223 corresponds to the accommodating portion 112.
Wherein, the guiding shaft 221 is arranged to provide guiding function for the moving direction of the guiding sleeve 222 and the jackscrew 223, so that the guiding sleeve 222 drives the jackscrew 223 to move towards the direction approaching or separating from the accommodating part 112; the first end of the guide shaft 221 is detachably connected with the locking switch 21 so as to facilitate the independent replacement of the components;
the first end of the guide sleeve 222 abuts against a part of the locking switch 21, and when the locking switch 21 is adjusted, the locking switch 21 can push the guide sleeve 222 to drive the jackscrew 223 to move along the guide shaft 221 towards the direction approaching to the accommodating part 112, so that locking and positioning of the positioning element 3 are achieved.
It should be noted that the guide shaft 221 is only an alternative way of the embodiment of the present application, and the moving direction of the guide sleeve 222 and the jackscrew 223 may be guided by other ways such as providing a guide hole in the body 1, which is not limited to this.
The first elastic piece 23 is sleeved on the guide shaft 221, the first elastic piece 23 is positioned between the first end of the guide sleeve 222 and the locking switch 21, the locking switch 21 is propped against the first elastic piece 23, the first elastic piece 23 is propped against the first end of the guide sleeve 222, when the locking switch 21 is adjusted, the locking switch 21 applies acting force on the first elastic piece 23 and transmits the acting force to the guide sleeve 222 through the first elastic piece 23, and the moving stroke of the guide sleeve 222 and the jackscrew 223 can be increased through the elastic deformation of the first elastic piece 23, so that the situation that the guide sleeve 222 and the locking switch 21 are locked due to rigid contact is avoided.
Specifically, the first elastic piece 23 is a disc spring, the volume of the disc spring is small, the disc spring can generate larger pretightening force due to small deformation, the structure of the locking member 2 can be more compact on the premise that the locking member 2 can provide enough pretightening force through the disc spring, a gasket 24 is arranged between the disc spring and the locking switch 21, and the gasket 24 can provide an abutting surface for the disc spring and the locking switch 21 so as to reduce abrasion of the disc spring and the locking switch 21.
As shown in fig. 2, in the locking mechanism of the positioning element provided by the embodiment of the application, the guide sleeve 222 is in a cylindrical structure, the first end of the guide sleeve 222 is provided with the end plate 2221, the end plate 2221 is provided with the mounting hole 2222 for the guide shaft 221 to pass through, the second end of the guide sleeve 222 is in an open state, the jackscrew 223 is connected to the second end of the guide sleeve 222 and seals the second end of the guide sleeve 222, the inner wall of the guide sleeve 222 is provided with internal threads, the outer circumferential surface of the jackscrew 223 is provided with external threads, and at least part of the external threads of the jackscrew 223 are screwed with the internal threads of the guide sleeve 222.
The guide sleeve 222 is coaxially assembled with the guide shaft 221 through the mounting hole 2222, the jackscrew 223 is in threaded connection with the guide sleeve 222, and the working stroke of the first elastic member 23 can be adjusted to obtain a desired locking force by adjusting the screwing depth of the jackscrew 223 at the second end of the guide sleeve 222. And need not be achieved with a high machining accuracy of the structure itself in order to obtain the desired pretension. In use, when the locking mechanism wears and the locking force is insufficient to lock the positioning element, the desired locking force can be achieved by adjusting the depth of the threaded portion of the jackscrew 223 into the second end of the guide sleeve 222.
As shown in fig. 2, 4, 6,8 and 11, in the locking mechanism of the positioning element provided by the embodiment of the application, the second end of the guide shaft 221 is radially provided with a first boss 2211 in a protruding manner, and the diameter of the first boss 2211 is larger than the diameter of the mounting hole 2222.
In the process that the guide sleeve 222 moves along the guide shaft 221 towards the direction close to the jackscrew 223, when the first boss 2211 is abutted against the end plate 2221, the guide sleeve 222 reaches the limit position and cannot move towards the direction where the jackscrew 223 is located, so that the connection state of the guide sleeve 222 and the guide shaft 221 can be maintained on the premise of ensuring the stroke of the guide sleeve 222, and the guide sleeve 222 is prevented from being separated from the guide shaft 221 under the unnecessary condition.
As shown in fig. 2, 4, 6-8 and 11, in the locking mechanism of the positioning element according to the embodiment of the application, the locking member 2 further includes a second elastic element 25, the second elastic element 25 is sleeved on the guide shaft 221, and the second elastic element 25 is located between the end plate 2221 and the first boss 2211.
The two ends of the second elastic member 25 are respectively abutted against the end plate 2221 and the first boss 2211, the guide sleeve 222 compresses the second elastic member 25 in the process of moving along the guide shaft 221 towards the direction close to the accommodating portion 112, the second elastic member 25 can provide restoring force for the guide sleeve 222, when the locking state is released, the guide sleeve 222 is pushed to drive the jackscrew 223 to move towards the direction far away from the accommodating portion 112 by the self restoring force of the second elastic member 25, and it is noted that when the shape of the second elastic member 25 is restored to the original state, the guide sleeve 222 and the jackscrew 223 can completely withdraw from the accommodating portion 112, so that the positioning element 3 is not blocked due to the fact that the guide sleeve 222 and the jackscrew 223 are still partially positioned in the accommodating portion 112 when the positioning element 3 is positioned in the accommodating portion 112 next time.
As shown in fig. 1, 3, 5 and 6, the locking mechanism of the positioning element according to the embodiment of the application includes a first mounting portion 11, where the first mounting portion 11 is open at two ends and hollow inside, two receiving holes 111 are formed on a side wall of the first mounting portion 11 near a second end of the first mounting portion, the two receiving holes 111 are disposed opposite to each other, the receiving holes 111 and an area between the receiving holes 111 of the first mounting portion 11 form the receiving portion 112, the second end of the guide shaft 221, the guide sleeve 222, the top wire 223 and the first elastic member 23 are disposed inside the first mounting portion 11 and between the receiving portion 112 and the first end of the first mounting portion 11, the first end of the guide shaft 221 is connected to the locking switch 21 inside the first mounting portion 11 or outside the first end of the first mounting portion 11, and the top wire 223 can extend to the receiving portion 112 to be positioned against the positioning element 3, so as to realize locking positioning of the positioning element 3.
When the positioning element 3 is arranged in the accommodating part 112, the positioning element 3 sequentially penetrates through one accommodating hole 111, the region, located between the two accommodating holes 111, of the interior of the first mounting part 11 and the other accommodating hole 111, the positioning element 3 is approximately kept at a position to be locked and positioned through the two accommodating holes 111, and then the guide sleeve 222 drives the jackscrew 223 to press and lock the positioning element 3 by adjusting the locking switch 21;
The shapes of the two accommodating holes 111 can be matched with the cross-sectional shapes of the positioning element 3, so that the matching degree of the outer surface of the positioning element 3 and the hole walls of the two accommodating holes 111 is improved in the locking and positioning process, the stress uniformity of the contact positions of the positioning element 3 and the two accommodating holes 111 is ensured as much as possible, and the situation that the positioning element 3 is damaged due to uneven stress is reduced;
Or the inner walls of the two receiving holes 111 near the second end of the first mounting portion 11 are formed with V-shaped structures as shown in fig. 1 and 3, that is, two inclined planes 1111 are formed with gradually decreasing distance in the direction toward the second end near the first mounting portion 11, by providing the two inclined planes 1111, the positioning element 3 can be effectively prevented from rotating circumferentially, so that the jack 223 can lock and position the positioning element 3 without applying a great force.
The guide shaft 221 may be detachably connected to the lock switch 21, for example, by a screw connection, or may be fixedly connected, for example, by interference fit or welding.
As shown in fig. 9, in another embodiment of the locking mechanism of the positioning element, the second elastic member 25 may also be disposed between the second end of the guide sleeve 222 and the second boss 113.
Wherein, the second boss 113 is formed on the inner wall of the first mounting portion 11 in a protruding manner, the second boss 113 is located at one side of the accommodating portion 112 near the first end of the first mounting portion 11, and at least a portion of the jackscrew 223 can pass through the second boss 113 and extend to the accommodating portion 112.
That is, each part of the locking member 2 installed in the first installation portion 11 and the accommodating portion 112 are respectively located at two sides of the second boss 113, the second boss 113 can limit the guiding sleeve 222 to prevent the guiding sleeve 222 from entering the accommodating portion 112 to block the positioning element 3 from entering the accommodating portion 112, but it should be noted that the size of the through area in the middle of the second boss 113 should be ensured to allow the jackscrew 223 to pass through, so as to ensure that the jackscrew 223 can smoothly lock and position the positioning element 3 located in the accommodating portion 112.
The two ends of the second elastic member 25 are respectively abutted against the second end of the second guide sleeve 222 and the second boss 113, the guide sleeve 222 compresses the second elastic member 25 in the process of moving along the guide shaft 221 towards the direction close to the accommodating portion 112, the second elastic member 25 can provide restoring force for the guide sleeve 222, when the locking state is released, the guide sleeve 222 is pushed to drive the jackscrew 223 to move towards the direction far away from the accommodating portion 112 by the self restoring force of the second elastic member 25, and it is required to be noted that when the shape of the second elastic member 25 is restored to the original state, the jackscrew 223 can completely withdraw from the accommodating portion 112, so that the positioning element 3 is not blocked due to the fact that the jackscrew 223 is still partially positioned in the accommodating portion 112 when the positioning element 3 is placed in the accommodating portion 112 in the next locking and positioning process.
Alternatively, the second elastic member 25 is a bellows spring. The corrugated spring has smaller volume, and compared with the common spiral spring, the corrugated spring has larger elastic coefficient, so that the structure of the locking member 2 can be more compact, and the corrugated spring has the advantages of low manufacturing cost and convenience in installation.
As shown in fig. 1,2 and 4, the locking mechanism of the positioning element provided in the embodiment of the present application, the locking switch 21 includes a mounting shaft 211 and a cam handle 212, and the mounting shaft 211 is rotatably connected with the cam handle 212.
Wherein the cam handle 212 includes a handle portion 2121 and a cam portion 2122, and a plane is formed on an outer peripheral surface of the cam portion 2122 at a position having a largest distance from a rotational axis thereof;
Specifically, in order to provide the installation space for the guide shaft 221, two cam portions 2122 are provided, the two cam portions 2122 are parallel to each other, the two cam portions 2122 are rotatably sleeved with the installation shaft 211, the rotation axes of the two cam portions 2122 are coincident with the axis of the installation shaft 211, the handle portion 2121 is connected between the position on the outer peripheral surface of the two cam portions 2122, which is the smallest distance from the rotation axis thereof, and the position at the largest distance, the outer peripheral surface of the two cam portions 2122 are abutted against the first elastic member 23 directly or through the washer 24, both ends of the installation shaft 211 are rotatably abutted against the first installation portion 11, and the first end of the guide shaft 221 is abutted against the installation shaft 211 between the two cam portions 2122.
The handle 2121 and the cam 2122 of the cam handle 212 are integrally formed, when the outer surface of the cam 2122 of the cam handle 212 is abutted against the first elastic member 23 at the position with the minimum distance from the rotation axis, the cam handle 212 can be regarded as an initial state of the cam handle 212, the positioning element 3 is not locked and positioned at the moment, when the positioning element 3 needs to be locked and positioned, the handle 2121 is pulled, the cam 2122 is gradually rotated to the position with the maximum distance from the axis on the outer surface of the cam 2122 and abutted against the first elastic member 23, the cam 2122 can be regarded as a locking state of the cam handle 212, in the process, the first elastic member 23 applies force to the first end of the guide sleeve 222, the guide sleeve 222 applies force to drive the jackscrew 223 to move towards the accommodating part 112, and the jackscrew 223 applies locking force to the positioning element 3 positioned at the accommodating part 112, so that the locking positioning of the positioning element 3 is realized;
It is generally set that the cam portion 2122 completes one-time locking positioning by rotating the cam portion 2122 with the first elastic member 23 in abutment with the position on the outer peripheral surface of the cam portion 2122 having the smallest distance from the rotational axis thereof and by rotating the cam portion 2122 with the first elastic member 23 in abutment with the position on the outer peripheral surface of the cam portion 2122 having the largest distance from the rotational axis thereof, wherein the stroke distance of the jack 223 in completing one-time locking positioning can be determined by adjusting the depth of screwing the jack 223 into the guide sleeve 222.
Alternatively, as shown in fig. 1 and 4, in the locking mechanism of the positioning element provided in the embodiment of the present application, the outer peripheral surfaces of the two cam portions 2122 are formed with flat surfaces 21221 at positions with the greatest distances from the rotation axis.
The flat surface 21221 is parallel to a tangential surface located at a position on the outer peripheral surface of the cam portion 2122 where the rotational axis is the largest, and the flat surface 21221 is provided so that when the cam portion 2122 is rotated to abut against the first elastic member 23 or the washer 24 or the end plate 2221 of the guide bush 222 at a position on the outer peripheral surface where the rotational axis is the largest, the position of the cam portion 2122 is maintained, and the cam portion 2122 is prevented from being rotated when an external force or the like is applied unnecessarily, and the locking effect of the positioning element 3 is not ensured.
According to the locking mechanism of the positioning element provided by the embodiment of the application, the mounting shaft 211 can be arranged in the first mounting part 11, and two ends of the mounting shaft 211 are respectively connected with opposite side walls of the first mounting part 11 in a rotating way;
or as shown in fig. 1 and 3, the first end of the first installation part 11 extends towards the direction away from the second end to form two opposite connection lugs 114, and two ends of the installation shaft 211 are respectively connected with the two connection lugs 114 in a rotating way, so that the installation of the installation shaft 211 is more convenient by arranging the connection lugs 114.
As shown in fig. 1, the locking mechanism of the positioning element provided in the embodiment of the present application, the body 1 further includes a second mounting portion 12, and the first mounting portion 11 is directly connected to the second mounting portion 12 or connected to the second mounting portion through a connecting arm 13. The second mounting portion 12 is used for realizing the mounting of the locking mechanism of the positioning element and other structures, and the length of the connecting arm 13, the connection angle and position between the connecting arm 13 and the first mounting portion 11, and the connection angle and position between the connecting wall and the second mounting portion 12 can be flexibly adjusted according to the actual requirements, which is not limited by the application.
Based on the locking mechanism of the positioning element provided by the embodiment, correspondingly, the application also provides the positioning element, wherein the positioning element is used for providing positioning information, and the positioning element is locked and positioned on the locking mechanism of the positioning element provided by the embodiment.
Based on the locking mechanism of the positioning element and the positioning element provided by the embodiments, correspondingly, the embodiment of the application provides a surgical instrument, which comprises a tracing part and a functional part, wherein the tracing part comprises a plurality of positioning elements provided by the embodiment, and the functional part and the tracing part have a preset position relationship and are used for being matched with an anatomical structure or other surgical instruments in operation.
Based on the locking mechanism of the positioning element, the positioning element and the surgical instrument provided by the embodiment, correspondingly, the embodiment of the application provides a surgical system, which comprises an execution part and a positioning part, wherein the execution part is used for being jointed with a surgical tool, the positioning part is used for being arranged on the execution part or the surgical tool to indicate the azimuth, and the positioning part comprises a plurality of positioning elements provided by the embodiment.
In the locking mechanism, the positioning element, the surgical instrument and the surgical system of the embodiment of the application, the locking mechanism of the positioning element can accommodate the positioning element by arranging the accommodating part on the body, and the locking mechanism of the positioning element can drive the sliding component to act by operating the locking switch when the positioning element is required to be positioned by arranging the locking component with the locking switch, the sliding component and the first elastic component on the body, the second end of the sliding component moves towards the direction close to the accommodating part until contacting with the positioning element and pressing the positioning element on the accommodating part, so that the positioning element is locked and positioned, and the locking force applied to the positioning element by the sliding component can be automatically and elastically adjusted through the first elastic piece, so that the locking degree of the positioning element can be adjusted, the positioning element is not easy to displace, and the positioning element is promoted to be effectively locked; meanwhile, in the locking mechanism of the positioning element, the surgical instrument and the surgical system, the locking mechanism of the positioning element has very simple structure, and is convenient for the disassembly and the installation of the positioning element.
In the locking mechanism, the positioning element, the surgical instrument and the surgical system of the positioning element, the locking mechanism of the positioning element uses the disc spring and the corrugated spring to work in a matched mode, firstly, the disc spring can increase the moving stroke of the jackscrew in the locking process, the situation that the cam handle cannot be sprung when the cam handle does not reach a target position due to rigid contact between all parts in the locking process without the disc spring is avoided, and in addition, the working stroke of the disc spring is adjusted by adjusting the screwing depth of the jackscrew and the guide sleeve, so that expected locking force is obtained, and higher machining precision is not needed. The locking force is applied through the disc spring, and after errors are generated by abrasion or processing, the error compensation and the abrasion compensation can be realized through the adjustment of the jackscrew and the guide sleeve.
In the locking mechanism, the positioning element, the surgical instrument and the surgical system of the positioning element, most parts in the locking member of the locking mechanism of the positioning element are arranged in the first installation part of the body, and the disc spring and the ripple spring occupy smaller space than the common spring, so that the locking mechanism has the advantages of simple and compact structure.
In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present application, and they should be included in the scope of the present application.
Claims (11)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210468092.0A CN116999095B (en) | 2022-04-29 | 2022-04-29 | Locking mechanism of positioning element, surgical instrument and surgical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210468092.0A CN116999095B (en) | 2022-04-29 | 2022-04-29 | Locking mechanism of positioning element, surgical instrument and surgical system |
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| CN116999095A CN116999095A (en) | 2023-11-07 |
| CN116999095B true CN116999095B (en) | 2025-02-18 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN217853084U (en) * | 2022-04-29 | 2022-11-22 | 北京和华瑞博医疗科技有限公司 | Locking mechanism of tracer, surgical instrument and surgical system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6106662B2 (en) * | 2011-05-17 | 2017-04-05 | ジンマー，インコーポレイティド | External fixed clamping system using a starting mechanism and stored spring energy |
| EP3031415B1 (en) * | 2014-12-10 | 2018-10-31 | Biedermann Technologies GmbH & Co. KG | Coupling assembly and polyaxial bone anchoring device comprising the same |
| CN106308940B (en) * | 2016-09-12 | 2018-11-02 | 苏州大学 | Quick-change mechanism and method for tail end tool of orthopedic surgery auxiliary robot |
| CN112847259B (en) * | 2019-11-26 | 2022-12-06 | 苏州宝时得电动工具有限公司 | Power tool and clamping device thereof |
| CN113950596B (en) * | 2020-09-10 | 2023-07-18 | 深圳市大疆创新科技有限公司 | Quick detach coupling assembling, handheld cloud platform and shooting equipment |
| CN213963687U (en) * | 2020-09-25 | 2021-08-17 | 武汉联影智融医疗科技有限公司 | Joint locking mechanism, headstock connection structure and operation navigation equipment |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN217853084U (en) * | 2022-04-29 | 2022-11-22 | 北京和华瑞博医疗科技有限公司 | Locking mechanism of tracer, surgical instrument and surgical system |
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