CN217696830U

CN217696830U - Detachable navigation tracer

Info

Publication number: CN217696830U
Application number: CN202221559715.7U
Authority: CN
Inventors: 李文钊; 张小兵; 彭聪
Original assignee: Tinavi Medical Technologies Co Ltd
Current assignee: Tinavi Medical Technologies Co Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-11-01
Anticipated expiration: 2032-06-21

Abstract

The utility model relates to an operation tracer technical field provides a detachable navigation tracer, include: a light reflecting section; the light reflecting seat is arranged on the light reflecting seat and comprises a connecting part; the base frame comprises a mounting hole and a limiting part arranged in the mounting hole; the reflection of light seat passes through connecting portion and spacing portion cooperation and can dismantle and inlay in the mounting hole to pass through the contact surface with the bed frame and extrude mutually and centering assembly. The utility model discloses with having and realizing dismantling the connection with the bed frame of reflection of light portion and tracer, and the secondary concatenation installation also can guarantee the advantage of repeated positioning accuracy.

Description

Detachable navigation tracer

Technical Field

The utility model relates to an operation navigation tool technical field, more specifically say, relate to a detachable navigation tracer.

Background

With the development of science and technology, robots are used in surgeries, such as orthopedic surgeries and the like, more and more robots are used for assisting in performing CT or X-ray scanning on patients in surgeries, bone substances of focus areas corresponding to the patients and surgical instruments are registered, and the positions of the patients and the surgical instruments are displayed in real time by using a visual recognition system, so that mechanical arms of the robots are used for controlling the surgical instruments to perform accurate drilling or osteotomy. The key to visual identification is to attach a tracer to the bone or surgical instrument to be captured by the visual lens.

The existing common tracer is a reflective structure tracer, infrared light or other rays are reflected by a reflective structure, and the infrared light or other rays are captured by a navigator to realize position identification. The existing tracer is usually designed in an integrated mode, the reflecting structure of the tracer and the base frame of the tracer are difficult to detach, or repeated positioning precision is difficult to guarantee after secondary splicing, so that the worn reflecting structure is inconvenient to replace, and the maintenance cost of the tracer is high.

Accordingly, there is a need for improvements and developments in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a detachable navigation tracer has and can realize dismantling the connection with the bed frame of reflection of light portion and tracer, and the secondary concatenation installation also can guarantee the advantage of repeated positioning accuracy.

In order to achieve the purpose, the utility model adopts the technical proposal that:

the utility model provides a detachable navigation tracer, include:

a light reflecting section;

the light reflecting seat is arranged on the light reflecting seat and comprises a connecting part;

the base frame comprises a mounting hole and a limiting part arranged in the mounting hole;

the reflection of light seat passes through connecting portion and spacing portion cooperation and can dismantle and inlay in the mounting hole to pass through the contact surface with the bed frame and extrude mutually and centering assembly.

In one embodiment, the base frame comprises a base frame body, the mounting hole is formed in the base frame body, and the limiting parts are distributed along the circumferential direction of the inner wall of the mounting hole;

the light reflecting seat comprises a light reflecting seat body, the outer wall of the light reflecting seat body is matched with the mounting hole, and the connecting parts are distributed along the circumferential direction of the outer wall of the light reflecting seat body;

the limiting part and the connecting part are mutually extruded and pressed to enable the reflecting base to be embedded in the mounting hole.

In one embodiment, the connecting portion comprises a clamping groove arranged on the outer wall of the reflector body, the clamping groove is arranged around the circumference of the reflector body, a plurality of guide notches are formed in the clamping groove, and the guide notches are communicated with the clamping groove and extend to the end face of the reflector body;

the limiting part comprises limiting bosses, and the limiting bosses are distributed along the circumferential direction of the inner wall of the mounting hole;

during the connection, spacing boss passes through the direction breach and rotatory entering joint groove, and the outer wall of spacing boss and the inner wall in joint groove support as the contact surface each other and lean on.

In one embodiment, the cross section of the clamping groove is in a V shape with a side opening, and the outline of the limiting boss is matched with the clamping groove.

In one embodiment, the outline of the reflector body is conical, and the inner outline of the mounting hole is correspondingly conical;

when the reflector base is connected, the outer wall of the reflector base body and the inner wall of the mounting hole are used as contact surfaces to be abutted against each other.

In one embodiment, the connection portion includes: the clamping elastic sheets are arranged at intervals around the circumference of the light reflecting seat body;

the limiting part comprises an inner clamping groove which is arranged around the circumference of the inner wall of the mounting hole;

when the light reflecting seat is connected, the clamping elastic sheet is embedded in the inner clamping groove through elastic deformation, and the outer wall of the light reflecting seat body is abutted against the inner wall of the mounting hole through the elastic force of the clamping elastic sheet.

In one embodiment, the limiting part comprises a butting groove arranged on the inner wall of the mounting hole, the butting groove is arranged around the circumference of the inner wall of the mounting hole, a plurality of inlet notches are formed in the butting groove, and the inlet notches are communicated with the butting groove and extend to the end face of the base frame body;

the connecting part comprises a plurality of rotary connecting bosses which are matched with the access notches and are distributed along the circumferential direction of the outer wall of the reflection seat body;

during connection, the rotary connection boss enters the butt joint groove in a rotating mode through the entering notch, and the inner wall of the butt joint groove is used for supporting the rotary connection boss so that the outer wall of the reflection seat body abuts against the inner wall of the mounting hole.

In one embodiment, the outer wall of the reflector body is provided with raised structures distributed at intervals.

In one embodiment, the reflector body is provided with an accommodating cavity, and the reflector is disposed in the accommodating cavity through the fixing portion. The fixing part comprises an elastic ring, the elastic ring is arranged between the inner wall of the accommodating cavity and the light reflecting part, the elastic ring comprises elastic unit pieces which are sequentially connected end to end, and the light reflecting part is positioned in the middle of the accommodating cavity through the extrusion of the elastic ring;

or,

the fixed part includes spacing retaining ring, and spacing retaining ring sets up in the mouth of a hole department of mounting hole, and when connecting, forms the screens and inlay card reflection of light portion between spacing retaining ring and the reflection of light seat body.

In one embodiment, the light reflecting portion includes: the upper hemisphere, the mounting platform and the lower hemisphere are connected in sequence; the upper hemisphere and the lower hemisphere are transparent, a light reflecting layer is arranged outside the lower hemisphere, and the light reflecting layer is used for reflecting light entering from the upper hemisphere out.

The utility model provides a pair of detachable navigation tracer's beneficial effect lies in at least: the connecting part on the reflecting seat is matched with the limiting part on the base frame to realize detachable connection; the contact surface between the reflection seat and the base frame is extruded to be limited, so that the reflection seat is located in the middle position of the mounting hole of the base frame, centering assembly is realized, and when the reflection seat is disassembled and assembled for multiple times, the position after secondary assembly can be ensured to be consistent with the position when leaving the factory, and the precision of repeated positioning is ensured. Can disinfect respectively after bed frame and reflection of light portion split when the disinfection, can directly change reflection of light portion and need not return the factory maintenance with whole navigation tracer when reflection of light portion wearing and tearing, effectively reduced the maintenance cost of navigation tracer, and can produce reflection of light portion and reflection of light seat as the consumptive material, under the service environment of difference, can only form the navigation tracer of different specifications through the reflection of light seat of taking the reflection of light portion more than changing, thereby the practicality is stronger.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a detachable navigation tracer according to an embodiment of the present invention;

fig. 2 is an exploded view of a detachable navigation tracer according to an embodiment of the present invention;

fig. 3 is an exploded view of a detachable navigation tracer according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a detachable navigation tracer according to a first embodiment of the present invention;

fig. 5 is an exploded view of a detachable navigation tracer according to a second embodiment of the present invention;

fig. 6 is a cross-sectional view of a detachable navigation tracer according to a second embodiment of the present invention;

fig. 7 is an exploded view of a detachable navigation tracer according to a third embodiment of the present invention;

fig. 8 is a cross-sectional view of a detachable navigation tracer according to a third embodiment of the present invention;

fig. 9 is an exploded view of a reflective seat and a reflective portion of a detachable navigation tracer according to a third embodiment of the present invention;

fig. 10 is a schematic structural diagram of an elastic ring of a detachable navigation tracer according to a third embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

100. a light reflecting section; 110. an upper hemisphere; 120. mounting a platform; 130. a lower hemisphere; 200. a light reflecting base; 210. a reflector body; 211. an accommodating cavity; 212. a raised structure; 220. a connecting portion; 221. clamping the elastic sheet; 222. screwing a boss; 223. a clamping groove; 224. a guide notch; 225. a boss portion; 230. a force application part; 300. a base frame; 310. a base frame body; 320. mounting holes; 330. a limiting part; 331. an inner clamping groove; 332. a butt joint groove; 333. entering the gap; 334. a limiting boss; 340. an identification block; 400. a fixed part; 410. an elastic ring; 411. an elastic unit piece; 420. a limiting retainer ring; 421. clamping; 500. a contact surface.

Detailed Description

In order to make the technical problem, technical solution and beneficial effects to be solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly disposed on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of technical features. The meaning of "plurality" is two or more unless explicitly defined otherwise.

This embodiment provides a detachable navigation tracer, cooperatees with the navigator for mark the operation position at the operation in-process, for the arm of robot provides the direction, and concrete structure is as follows:

as shown in fig. 1 and fig. 2, the detachable navigation tracer of the embodiment includes: a reflector 100, a reflector base 200, and a base frame 300. Reflecting portion 100 is fixed to be set up on reflecting seat 200, and reflecting portion 100 is arranged in carrying out the light reflection in the operation navigation, and the navigator passes through the ray that reflecting portion 100 reflects, and discernment reflecting portion 100 position that can be accurate to through the algorithm, reachs the position that the navigation tracer marked, realize the location of operation in-process. The reflector 200 serves as a support structure for the reflector 100, and the reflector 200 includes a connecting portion 220 connected to the base frame 300 via the connecting portion 220. The base frame 300 is a main support structure of the tracer, and includes a mounting hole 320 and a limiting portion 330 disposed in the mounting hole 320, and generally, a plurality of mounting holes 320 are disposed, as shown in fig. 2, 4, 6 and 8, the light reflecting seat 200 is detachably embedded in the mounting hole 320 by the connection portion 220 being engaged with the limiting portion 330, and is pressed against the base frame 300 by the contact surface 500 to be assembled in a centered manner. As shown in fig. 2, a plurality of light reflecting seats 200 are correspondingly disposed in the plurality of mounting holes 320, so that a plurality of light reflecting portions 100 are connected to one base frame 300, a plurality of detection points are realized by the plurality of light reflecting portions 100, and the positioning position marked by the whole navigation tracer is more accurate by multi-point positioning. The base frame 300 in this embodiment is made of a rigid material (e.g., a metal material), which has a strong carrying capacity and is not easily deformed. The reflector 200 is made of a deformable material (e.g., plastic material), and can be deformed when subjected to a certain degree of pressing force, and generates a corresponding elastic force.

The working principle of the detachable navigation tracer provided by the embodiment is as follows: the connecting portion 220 of the reflector 200 is matched with the limiting portion 330 of the base frame 300, so that when the reflector 200 is connected, the reflector 200 is disposed in the mounting hole 320, and the connecting portion 220 is in butt joint with the limiting portion 330, so that the reflector 200 is embedded in the mounting hole 320. When the reflector is disassembled, the connecting portion 220 is separated from the limiting portion, so that the reflector 200 is moved out of the mounting hole 320, and the disassembly is realized. And when connecting, carry out the extrusion spacing and make reflection of light seat 200 be located the intermediate position of the mounting hole 320 of bed frame 300 through the contact surface 500 between reflection of light seat 200 and the bed frame 300, realize the centering assembly, when carrying out dismouting many times like this, can both be located the intermediate position of the mounting hole 320 of bed frame 300 with reflection of light seat 200 at every turn through the centering assembly, guarantee that the position after the secondary assembly is unanimous with the position when leaving the factory, guaranteed the precision of repeated positioning. Through realizing demountable installation with reflection of light seat 200 and bed frame 300, can disinfect respectively after bed frame 300 and reflection of light portion 100 split when the disinfection, can directly change reflection of light portion 100 when reflection of light portion 100 wearing and tearing and need not return the factory maintenance with whole navigation tracer, the maintenance cost of navigation tracer has effectively been reduced, and can produce reflection of light portion 100 and reflection of light seat 200 as the consumptive material, under the service environment of difference, can only form the navigation tracer of different specifications through changing the reflection of light seat of taking reflection of light portion 100, thereby the practicality is stronger.

The base frame 300 in this embodiment may take various forms, and a specific structure thereof is not described. The plurality of mounting holes 320 of the base frame 300 have the same basic structure, and the plurality of matched reflectors 200 have the same basic structure. In the present embodiment, the arrangement of the plurality of mounting holes 320 is not specifically described, and one mounting hole 320 and one corresponding reflector 200 are used for structural description. The base frame 300 is described in a flat state, the plurality of mounting holes 320 are distributed on a horizontal plane, and the base frame 300 is referred to as an upper side and an opposite side as a lower side, wherein the side on which the light reflecting portion 100 is disposed is referred to as an upper side.

As shown in fig. 1 and 2, the base frame 300 further includes a base frame body 310, the base frame body 310 is further provided with a connecting position of other supporting components, and a mark block 340 detachably disposed on the base frame body 310, the specification information of the navigation tracer can be marked by the mark block 340, and the mark block 340 is made of plastic with a specific color and is connected with the base frame body 310 by press-fitting. The mounting hole 320 is provided in the base body 310, and penetrates the base body 310 from the up-down direction. The reflector 200 includes a reflector body 210, and the outer wall of the reflector body 210 is disposed to match the mounting hole 320, so that the reflector 200 is connected to the mounting hole 320 in the vertical direction. The limiting portion 330 is circumferentially distributed along the inner wall of the mounting hole 320, the connecting portion 220 is circumferentially distributed along the outer wall of the reflector body 210, and the limiting portion 330 is in press fit with the connecting portion 220 to enable the reflector 200 to be embedded in the mounting hole 320. By circumferentially distributing the limiting part 330 and the connecting part 220, the stress when the limiting part and the connecting part are connected can be more uniform, and the connection process is more stable. By the uniform extrusion force around the center, the force applied to the contact surface 500 between the reflector 200 and the base frame 300 is more uniform, and the reflector 200 is located in the middle of the mounting hole 320 of the base frame 300, thereby realizing the centering assembly.

On the basis of the above structure, different embodiments are formed by different structures of the connecting portion 220 and the limiting portion 330, which specifically include the following:

example one

As shown in fig. 2, 3, and 4, in the present embodiment, the outer contour of the reflector body 210 is tapered, and the inner contour of the mounting hole 320 is correspondingly tapered, so that when the tapered reflector body 210 enters the mounting hole 320 from the bottom up, the tapered reflector body 210 can be automatically centered along the tapered inner wall of the mounting hole 320. When the reflector 200 is connected to the base frame 300, the outer wall of the reflector body 210 and the inner wall of the mounting hole 320 abut against each other as the contact surface 500. The conical outer wall of the reflection seat body 210 is extruded on the conical inner wall of the mounting hole 320, so that the center shaft of the reflection seat body 210 is overlapped with the center shaft of the mounting hole 320, and centering mounting is realized.

On the toper inner wall of mounting hole 320 was extruded for making anti-light seat body 210's toper outer wall, the structure of connecting portion 220 specifically included joint shell fragment 221, and joint shell fragment 221 is followed anti-light seat body 210's radial extension sets up, is provided with bellying 225 in anti-light seat body 210's lower part, the one end and the bellying 225 of joint shell fragment 221 are connected and the other end activity sets up, and it is gapped between the lower surface of joint shell fragment 221 and anti-light seat body 210, and a plurality of joint shell fragments 221 encircle anti-light seat body 210's circumference interval and set up. So that the outer end of the snap-in elastic piece 221 can be bent and deformed and generate a certain elastic force. The structure of the limiting portion 330 specifically includes an inner clamping groove 331, and the inner clamping groove 331 is disposed around the circumference of the inner wall of the mounting hole 320 of the base frame body 310. When the light reflecting base 200 is connected to the base chassis 300, the clamping elastic piece 221 is pressed into the mounting hole 320 through elastic deformation and is embedded in the inner clamping groove 331 after moving upward, and since the distance from the outermost end of the clamping elastic piece 221 to the center of the light reflecting base body 210 is greater than the radius of the mounting hole 320 and greater than the radius of the inner clamping groove 331 without deformation, the clamping elastic piece 221 is still in a pressing deformation state after being clamped in the inner clamping groove 331, and the elastic force generated by deformation enables the light reflecting base body 210 to stretch toward the inner wall of the mounting hole 320, so that the outer wall of the light reflecting base body 210 abuts against the inner wall of the mounting hole 320 through the elastic force of the clamping elastic piece 221. And the reflection seat 200 can be prevented from being withdrawn by the clamping spring piece 221 being clamped and embedded in the inner clamping groove 331.

In this embodiment, the downward inner surface of the inner locking groove 331 may be disposed along the horizontal direction, or may be disposed obliquely downward (the downward inner surface of the locking groove 331 is inclined at an angle of 25 ° to the horizontal direction in this embodiment), and the opposite inner wall of the locking groove 331 is inclined (the angle between the opposite inner wall of the locking groove 331 is 65 ° in this embodiment), so that the inner locking groove 331 forms a side-opening V-shaped groove (fig. 4), when the locking elastic piece 221 is pressed into the mounting hole 320 by elastic deformation, the edge of the locking elastic piece 221 matches and presses the side V-shaped profile of the inner locking groove 331, so as to realize stable limit of the outer end edge of the locking elastic piece 221, and prevent the locking elastic piece 221 from easily separating from the inner locking groove 331.

In this embodiment, the connection portion 220 and the limiting portion 330 are connected or disconnected, so that the light-reflecting portion 100 can be reused.

Example two

As shown in fig. 2, 5 and 6, in the present embodiment, the outer contour of the reflector body 210 is tapered, and the inner contour of the mounting hole 320 is correspondingly tapered, so that the tapered reflector 200 can be automatically centered along the tapered inner wall of the mounting hole 320 when entering the mounting hole 320 from below to above. When the reflector 200 is connected to the base frame 300, the outer wall of the reflector body 210 and the inner wall of the mounting hole 320 abut against each other as the contact surface 500. The conical outer wall of the reflector body 210 is extruded on the conical inner wall of the mounting hole 320, so that the center axis of the reflector body 210 is superposed with the center axis of the mounting hole 320, and the centering mounting is realized.

In order to extrude the conical outer wall of the reflector body 210 to the conical inner wall of the mounting hole 320, the second form of the connecting portion 220 includes a screwing boss 222, the screwing boss 222 protrudes out of the outer wall of the reflector body 210, and a plurality of screwing bosses 222 are circumferentially spaced apart along the outer wall of the reflector body 210. The corresponding limiting portion 330 has a specific structure including an abutting groove 332 disposed on the inner wall of the mounting hole 320, the abutting groove 332 is circumferentially disposed around the inner wall of the mounting hole 320, the abutting groove 332 is provided with a plurality of entering notches 333, the entering notches 333 communicate with the abutting groove 332 and extend to the end surface of the base frame body 310, so that the entering notches 333 are connected to the abutting groove 332 and the outside thereof, and the plurality of screwing bosses 222 are disposed in a matching manner with the entering notches 333. When the reflector 200 is connected to the base frame 300, the screw boss 222 is rotated into the abutting groove 332 through the entering notch 333. The inner wall of the abutting groove 332 is used for supporting the screwing boss 222, a tight fit relation is formed between the lower surface of the inner wall of the abutting groove 332 and the lower surface of the screwing boss 222, when the screwing boss 222 rotates to enter the abutting groove 332, the lower surface of the abutting groove 332 and the lower surface of the screwing boss 222 form extrusion fit, so that the screwing boss 222 can be clamped in the abutting groove 332 and is not easy to loosen, and due to the extrusion force existing in the tight fit connection process of the abutting groove and the screwing boss 222, the rotating boss 222 is subjected to upward extrusion force, the rotating boss 222 tends to move upwards due to the fact that the mounting hole 320 is a conical inner wall, the reflecting seat body 210 is upwards propped in the mounting hole 320 through the extrusion force, and the outer wall of the reflecting seat body 210 is abutted against the inner wall of the mounting hole 320.

As shown in fig. 2 and 5, in addition, on the basis that the conical surface is adopted as the contact surface 500 in the first and second embodiments, the protruding structures 212 are arranged on the outer wall of the frustum-shaped reflection seat body 210 at intervals, and when the reflection seat body 210 is extruded with the inner wall of the installation hole 320, the protruding structures 212 are made of plastic material and are deformed after being extruded, so that the outer wall of the reflection seat body 210 can be attached to the inner wall of the installation hole 320 more closely, and the outer wall of the reflection seat body 210 is not easy to loosen. The raised structure may take many forms, such as a raised boss, raised dots, raised ribs, teeth, etc.

EXAMPLE III

As shown in fig. 2, 7 and 8, the outer contour of the reflector body 210 may be a cone or a cylinder, and the inner contour of the mounting hole 320 is correspondingly set to be a cone or a cylinder. Since the machining of the taper dimensions is relatively difficult during the machining process. Therefore, in the present embodiment, the outer contour of the reflector body 210 is cylindrical, and the inner contour of the corresponding mounting hole 320 is also cylindrical. For easy to assemble, there will be very little clearance in reflecting light seat body 210 and the mounting hole 320 on the bed frame 300, and through the accurate clearance fit of the mounting hole 320 on reflecting light seat body 210 and the bed frame 300, the repeated positioning accuracy of the secondary assembly after more making things convenient for the dismouting is high to make the whole navigation tracer after many times of dismouting have good repeated positioning accuracy. Then the outer wall of the reflector body 210 and the inner wall of the mounting hole 320 do not act as a contact surface for the self-centering axis when connected.

As shown in fig. 2, fig. 7, and fig. 8, the contact surface 500 as the automatic centering axis in the embodiment is disposed on the connecting portion 220 and the limiting portion 330, the third structure of the connecting portion 220 specifically includes a clamping groove 223 disposed on the outer wall of the light reflecting seat body 210, the clamping groove 223 is disposed around the circumference of the light reflecting seat body 210, a plurality of guiding notches 224 are disposed on the clamping groove 223, the guiding notch 224 divides the circle of clamping groove 223 into a plurality of sections, the guiding notch 224 communicates with the clamping groove 223 and extends to the end surface of the light reflecting seat body 210, so that the guiding notch 224 connects the clamping groove 223 with the outside thereof. The limiting part 330 includes a limiting boss 334, the limiting bosses 334 are circumferentially distributed along the inner wall of the mounting hole 320, and the limiting bosses 334 are matched with the guide notches 224. Spacing boss 334 is rotatory to get into joint groove 223 through direction breach 224, the size of joint groove 223 will be a little less than the size of spacing boss 334, thereby make spacing boss 334 enter into joint groove 223 time, joint groove 223 can produce and warp, and a plurality of spacing bosses 334 are along circumference setting, so in-process in the joint groove 223 is being crowded into, every spacing boss 334 all extrudees anti-light seat body 210 towards the axis direction, thereby make anti-light seat body 210 through the extrusion of the spacing boss 334 of circumference and enter into the axis position of mounting hole 320. Therefore, the outer wall of the limiting boss 334 and the inner wall of the clamping groove 223 are used as contact surfaces to abut against each other, the inner wall of the clamping groove 223 on the light reflecting seat body 210 is extruded through the outer wall of the limiting boss 334, so that the center axis of the light reflecting seat body 210 and the center axis of the mounting hole 320 are overlapped, and centering mounting is realized.

As shown in fig. 8 and 9, the cross-sectional shape of the catching groove 223 is a side-opened "V" shape, and the outline of the position-limiting projection 334 is matched with the catching groove 223. For example, the limiting projection 334 may have a matching V-shape or a circular arc shape, which is tangent to the V-shaped inner wall of the locking groove 223. The upper and lower surface of the inner wall of joint groove 223 all inclines to set up, if the upper and lower surface of the outer wall of the spacing boss 334 that corresponds all inclines to set up, squeezes the in-process of joint groove 223 when spacing boss 334 extrudes, extrudes through the inclined plane to make the extrusion force more even, and extrude the in-process and have the thrust towards the axis, thereby make the center of the stable orientation mounting hole 320 of reflection of light seat body 210 ability remove.

As shown in fig. 7, further, a force application portion 230 is disposed on the lower surface of the reflector body 210, and when the reflector body 210 is connected, the force application portion 230 protrudes out of the lower surface of the mounting hole, so that the force application portion 230 is screwed to drive the reflector body 210 to rotate, and the limiting boss 334 is squeezed into the locking groove 223, especially to provide a clamping position for a tool, which facilitates the application of force, for example, the shape of the force application portion may be a hexagon matched with a standard wrench.

As shown in fig. 9, on the basis of all the above embodiments, the structure of the reflector 200 is specifically as follows:

the reflector body 210 has a receiving cavity 211, and the reflector 100 is disposed in the receiving cavity 211 through the fixing portion 400. The fixing portion 400 can fix the light-reflecting portion 100 in the accommodating cavity 211, so as to ensure that the center of the light-reflecting portion 100 is located on the central axis of the light-reflecting base body 210, thereby realizing more accurate positioning.

As shown in fig. 8, 9 and 10, the fixing portion 400 in the embodiment includes various forms, wherein the first form is: the fixing portion 400 includes an elastic ring 410, the elastic ring 410 is disposed between the inner wall of the accommodating cavity 211 and the light reflecting portion 100, so that the outer wall of the elastic ring 410 abuts against the inner wall of the accommodating cavity 211, and the inner wall of the elastic ring 410 is connected to the light reflecting portion 100. When the reflector is disposed in the receiving cavity 211, the elastic ring 410 can push the center of the reflector 100 to reach the central axis of the reflector 200, so as to ensure that the reflector 100 and the reflector 200 can be installed in a centered manner, thereby further ensuring the repeated positioning accuracy after secondary installation.

The elastic ring 410 can adopt various structures, the elastic ring 410 in the embodiment includes elastic unit pieces 411 which are connected end to end in sequence, and the light reflecting part 100 is located in the middle of the accommodating cavity 211 through the extrusion of the elastic ring 410; the elastic unit is a bending elastic strip, such as a "V" -shaped strip, a "key" -shaped strip, a "square" -shaped strip, etc., as long as the elastic strip generates a thrust force towards the center of the elastic ring 410 after being deformed by squeezing, which meets the design requirements and achieves the corresponding technical effects.

The light reflecting portion 100 is fixed by the elastic ring 410, and needs to be fixed by bonding.

As shown in fig. 3, 4 and 6, the second form of the fixing portion 400 is: the fixing portion 400 includes a limit stop 420, the limit stop 420 is disposed at the opening of the mounting hole 320, and the inner diameter of the limit stop 420 is smaller than that of the mounting hole 320. When the light reflecting seat is connected, the limiting check ring 420 limits the position above the light reflecting part 100, and the light reflecting seat body 210 supports the position below the light reflecting part 100, so that a clamping position 421 is formed between the limiting check ring 420 and the light reflecting seat body 210, and the light reflecting part 100 is arranged in the clamping position 421 and is clamped and fixed. The light reflecting portion 100 is fixed by the limit retainer ring 420, and needs to be bonded and fixed. Thereby ensuring the stability of the connection of the light reflecting part 100 and preventing the light reflecting part 100 from easily moving on the light reflecting base 200.

As shown in fig. 3 and 9, in all the embodiments, the structure of the light reflecting part 100 specifically includes: the upper hemisphere 110, the mounting platform 120 and the lower hemisphere 130 are connected in sequence; the upper hemisphere 110 and the lower hemisphere 130 are both transparent, and a reflective layer is disposed outside the lower hemisphere 130, and the reflective layer is used for reflecting light entering from the upper hemisphere 110. The lower portion of the inner wall of the corresponding accommodating cavity 211 is configured as an arc surface and accommodates the lower hemisphere 130, the mounting platform 120 is embedded in the elastic ring 410 and limited, and the upper hemisphere 110 protrudes out of the light reflecting base 200.

The use of the navigation tracer in the embodiment comprises the following steps:

the first step, assembly reflection of light portion and reflection of light seat, the assembly needs to use glue to bond.

Secondly, before the operation, the assembled reflecting seat can be sterilized by using EO or hydrogen peroxide; the pedestals are sterilized using a thermal sterilization process.

And thirdly, after the operation, using a tool to disassemble the light reflecting seat with the light reflecting part, and cleaning and disinfecting for the next operation.

To sum up, the detachable navigation tracer provided by the embodiment of the utility model realizes detachable connection by matching the connecting part on the reflecting seat with the limiting part on the base frame; use detachable reflection of light seat and bed frame, realize the high accuracy cooperation, accomplish accurate navigation, guarantee moreover that the structure after the repeated assembly has higher repeated positioning accuracy, and it is firm just to stabilize. Can disinfect respectively after bed frame and reflection of light portion split when the disinfection, only need to unify bed frame and apparatus before the art and carry out the heat disinfection, assemble again to cold disinfection after having avoided carrying out the heat disinfection again, and practiced thrift the flow. Can directly change reflection of light portion when reflection of light portion wearing and tearing and need not return the factory maintenance with whole navigation tracer, effectively reduced navigation tracer's maintenance cost. And can produce as the consumptive material with reflection of light portion and reflection of light seat to and sell, can realize standardized production. Under the service environment of difference, can only form the navigation tracer of different specifications through changing the reflection of light seat of taking the reflection of light portion, need not change the bed frame, only need change on the bed frame the sign piece can, the practicality is stronger.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A detachable navigation tracer, comprising:

a light reflecting section;

the reflecting base is matched with the limiting part through the connecting part and is detachably embedded in the mounting hole, and the reflecting base and the base frame are extruded mutually through contact surfaces to be assembled in a centering mode.

2. The detachable navigation tracer of claim 1, wherein the base comprises a base body, the mounting hole is disposed on the base body, and the limiting portions are circumferentially distributed along an inner wall of the mounting hole;

the limiting part and the connecting part are in extrusion press fit, so that the reflecting seat is embedded in the mounting hole.

3. The detachable navigation tracer of claim 2, wherein the connecting portion comprises a locking groove disposed on an outer wall of the reflector body, the locking groove is disposed around a circumference of the reflector body, the locking groove is formed with a plurality of guiding notches, and the guiding notches are communicated with the locking groove and extend to an end surface of the reflector body;

during connection, spacing boss passes through direction breach and rotatory entering the joint groove, the outer wall of spacing boss and the inner wall in joint groove is as the contact surface supports each other and leans on.

4. The detachable navigation tracer of claim 3, wherein the cross-sectional shape of the snap-in groove is a laterally open "V" shape, and the contour of the limit boss matches the snap-in groove.

5. The detachable navigation tracer of claim 2, wherein the reflector body has a tapered outer contour, and the mounting hole has a tapered inner contour;

when the reflector base is connected, the outer wall of the reflector base body and the inner wall of the mounting hole are used as the contact surfaces to be abutted against each other.

6. The removable navigational tracer of claim 5, wherein the connection portion comprises: the clamping elastic sheets are arranged at intervals around the circumference of the reflecting seat body;

the spacing portion includes: the inner clamping groove is circumferentially arranged around the inner wall of the mounting hole;

when the light reflecting seat is connected, the clamping elastic sheet is embedded in the inner clamping groove through elastic deformation, and the outer wall of the light reflecting seat body is abutted against the inner wall of the mounting hole through the elasticity of the clamping elastic sheet.

7. The detachable navigation tracer of claim 5, wherein the limiting portion comprises an abutting groove disposed on an inner wall of the mounting hole, the abutting groove is disposed around a circumference of the inner wall of the mounting hole, the abutting groove is provided with a plurality of entry notches, and the entry notches communicate with the abutting groove and extend to an end surface of the base frame body;

the connecting part comprises a plurality of rotary connecting bosses which are matched with the inlet notches and are distributed along the circumferential direction of the outer wall of the reflecting seat body;

during connection, connect the boss soon through get into the breach and rotatory the entering butt groove, the inner wall in butt groove is used for supporting connect the boss soon, so that the outer wall of reflection of light seat body with the inner wall counterbalance of mounting hole is leaned on.

8. The detachable navigation tracer of claim 5, wherein the outer wall of the reflector body is provided with raised structures distributed at intervals.

9. The detachable navigation tracer of claim 2, wherein the reflector body is provided with an accommodating cavity, and the reflector is disposed in the accommodating cavity through the fixing portion; the fixing part comprises an elastic ring, the elastic ring is arranged between the inner wall of the accommodating cavity and the light reflecting part, the elastic ring comprises elastic unit elements which are sequentially connected end to end, and the light reflecting part is positioned in the middle of the accommodating cavity through extrusion of the elastic ring;

or,

the fixed part comprises a limiting check ring, the limiting check ring is arranged at the orifice of the mounting hole, and when the fixing part is connected with the mounting hole, a clamping position is formed between the limiting check ring and the light reflecting seat body and is clamped and embedded with the light reflecting part.

10. The removable navigational tracer of any of claims 1-9, wherein the light reflector comprises: the upper hemisphere, the mounting platform and the lower hemisphere are connected in sequence; the upper hemisphere and the lower hemisphere are both transparent, a reflective layer is arranged outside the lower hemisphere, and the reflective layer is used for reflecting light entering from the upper hemisphere out.