CN221205707U - Brain stereotactic instrument locking mechanism - Google Patents
Brain stereotactic instrument locking mechanism Download PDFInfo
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- CN221205707U CN221205707U CN202322415645.9U CN202322415645U CN221205707U CN 221205707 U CN221205707 U CN 221205707U CN 202322415645 U CN202322415645 U CN 202322415645U CN 221205707 U CN221205707 U CN 221205707U
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- locking
- block
- locking mechanism
- circular arc
- brain stereotactic
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- 210000004556 brain Anatomy 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 230000009471 action Effects 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 239000000523 sample Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002672 stereotactic surgery Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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Abstract
The application belongs to the technical field of medical instruments, and relates to a locking mechanism of a brain stereotactic instrument. When the arc block needs to be opened, if the arc block is not locked, the locking rod is directly pulled, so that the arc block can be conveniently opened, and the fixing ring is easily separated from the connection with the connecting ring. If the circular arc block is locked, the locking screw is required to be rotated and loosened first, so that the first sliding block is reset under the action of the first spring, and then the locking rod is pulled to open the circular arc block. The locking mechanism of the brain stereotactic instrument has the advantages of convenient use and stable locking.
Description
Technical Field
The application belongs to the technical field of medical instruments, and particularly relates to a locking mechanism of a brain stereotactic instrument.
Background
Often during neurosurgery, a physician employs stereotactic guidance to reach the site where surgery is desired. Stereotactic surgery requires the use of a brain stereotactic instrument.
Chinese patent document CN 107106255A discloses a brain stereotactic apparatus comprising a semicircular arc portion and a head frame, wherein the head frame is for being fixed to the head of a patient by means of pins or screws, wherein the arc portion comprises a coupling member shaped as a ring for attaching and locking the arc portion to the head frame, wherein the head frame comprises a support member shaped as a ring for receiving a corresponding coupling member, wherein each coupling member comprises a pivotable clamp element which, when coupling the arc portion to the head frame, partially circumferentially surrounds the corresponding support member, and wherein the coupling member comprises a locking element for receiving a top end portion of the corresponding clamp element, and locking the corresponding coupling member to the corresponding support member. However, when the coupling component is locked on the supporting component in the brain stereotactic instrument, the locking is only performed by the locking knob, the structure is simpler, the coupling component is easy to fall off after the locking, and the connection is not stable enough.
Disclosure of utility model
The utility model aims to solve the technical problems that: in order to solve the defects in the prior art, the brain stereotactic instrument with the locking mechanism is provided with more stable locking connection.
The technical scheme adopted for solving the technical problems is as follows:
a brain stereotactic machine locking mechanism comprising:
The circular arc block is hinged on the circular ring;
The locking piece is fixed and is used for locking the circular arc piece on the ring, the locking piece includes: the locking device comprises an outer shell with an inner cavity, a first sliding block which is arranged in the outer shell and can slide, a locking screw which is arranged on the outer shell, a locking rod which is arranged on the first sliding block, a first spring which drives the first sliding block to reset, a second spring which drives the locking rod to reset, and a circular arc block which can be kept in a locking state after the locking rod resets, wherein the locking screw is screwed at the moment, so that the first sliding block can be locked to prevent the first sliding block from moving.
Preferably, the locking mechanism of the brain stereotactic instrument comprises a whole circular ring part and a semicircular ring part, wherein the semicircular ring part and the circular arc block can jointly form a circle, and the whole circular ring is formed when the circular arc block is locked.
Preferably, the locking mechanism of the brain stereotactic instrument of the present utility model, the end of the circular arc block is provided with a bump to be matched with a locking rod, and the locking rod extends below the bump to be abutted against the bump.
Preferably, the locking mechanism of the brain stereotactic instrument of the present utility model, said locking lever has a first inclined plane, said projection has a second inclined plane cooperating with said first inclined plane.
Preferably, in the brain stereotactic instrument locking mechanism of the present utility model, the front end of the locking screw is a conical surface, and the first sliding block is provided with a third inclined surface matched with the conical surface at the front end of the locking screw.
Preferably, the brain stereotactic instrument locking mechanism of the present utility model has a handle at one end of the locking rod to facilitate pulling the locking rod.
Preferably, the locking mechanism of the brain stereotactic instrument of the present utility model, said outer casing is fixed by a screw.
Preferably, the locking mechanism of the brain stereotactic instrument is characterized in that the first spring is a cylindrical spring sleeved on the sliding rod, and two ends of the first spring are respectively abutted against the inner wall of the outer shell and the first sliding block.
The beneficial effects of the utility model are as follows:
When the locking mechanism of the brain stereotactic instrument is used, the locking rod props against the circular arc block, so that the circular arc block is not opened, and the locking rod realizes self locking of the circular arc block under the action of the second spring. When the arc block needs to be opened, if the arc block is not locked, the locking rod is directly pulled, so that the arc block can be conveniently opened, and the fixing ring is easily separated from the connection with the connecting ring. If the circular arc block is locked, the locking screw is required to be rotated and loosened first, so that the first sliding block is reset under the action of the first spring, and then the locking rod is pulled to open the circular arc block. The locking mechanism of the brain stereotactic instrument has the advantages of convenient use and stable locking.
Drawings
The technical scheme of the application is further described below with reference to the accompanying drawings and examples.
FIG. 1 is a schematic perspective view of a brain stereotactic apparatus according to an embodiment of the present application;
FIG. 2 is a schematic perspective view of a support assembly according to an embodiment of the present application;
FIG. 3 is a schematic perspective view of a base assembly according to an embodiment of the present application;
FIG. 4 is a schematic perspective view of a ring, a circular arc block and a locking block according to an embodiment of the present application;
FIG. 5 is a schematic view showing the internal structure of a lock block according to an embodiment of the present application;
FIGS. 6 and 7 are schematic diagrams showing the relationship between the locking lever and the bump according to an embodiment of the present application;
Fig. 8 is a schematic structural view of a locking screw and a first sliding block according to an embodiment of the present application. The reference numerals in the figures are: 1. a base assembly;
2. A support assembly;
3. An arc-shaped frame;
4. A probe mounting assembly;
5. a locking mechanism;
11. a bottom frame;
13. a bottom horizontal mounting block; 14. a first horizontal slider; 15. a vertical slider;
17. a connecting ring;
21. A bracket;
22. A fixing ring;
23. a top rail;
24. A transverse groove;
221. a circular ring;
222. arc blocks;
223. a locking block;
2211. A full circular ring portion; 2212. a semicircular ring portion; 2220. a bump;
2221. A second inclined surface;
2231. An outer housing;
2232. A first slider;
2233. a locking lever;
2234. A second spring;
2235. a first spring;
2236. A locking screw;
2237. a first inclined surface;
2238. a front end;
2239. And a third inclined plane.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.
The technical scheme of the present application will be described in detail below with reference to the accompanying drawings in combination with embodiments.
Example 1
This embodiment provides a brain stereotactic apparatus with a locking mechanism, as shown in fig. 1-3, comprising:
The base assembly 1, the base assembly 1 comprises a bottom frame 11, the bottom frame 11 of at least two opposite sides is provided with a bottom horizontal installation block 13, a first horizontal sliding block 14 arranged on the bottom horizontal installation block 13 in a sliding manner, a vertical sliding block 15 arranged on the first horizontal sliding block 14 in a sliding manner, and a connecting ring 17 is arranged at the top of the vertical sliding block 15;
The support assembly 2, as shown in fig. 2, the support assembly 2 is U-shaped, including a top cross bar 23 and brackets 21 disposed at two ends of the top cross bar 23, the brackets 21 are provided with fixing rings 22 cooperating with the connecting rings 17, the support assembly 2 is integrally rotated by cooperating and adjusting the connecting rings 17 with the fixing rings 22, the fixing rings 22 include a circular ring 221, arc blocks 222 hinged on the circular ring 221, locking blocks 223 fixed on the circular ring 221 and used for locking the arc blocks 222, and the locking blocks 223, as shown in fig. 5, include: an outer case 2231 having an inner cavity, a first sliding block 2232 slidably disposed in the outer case 2231, a locking bar 2233 disposed on the first sliding block 2232, the first sliding block 2232 being returned by a first spring 2235, the locking bar 2233 being returned by a second spring 2234, the locking bar 2233 being returned, and then the arc block 222 being maintained in a locked state, and at this time, the locking screw 2236 being tightened to lock the first sliding block 2232 against movement of the first sliding block 2232, thereby securing the connecting ring 17 to the fixing ring 22;
The arc-shaped frame 3 is arranged on the top cross bar 23 and can horizontally slide along the top cross bar 23;
The probe installation assembly 4 is arranged on the arc-shaped frame 3 and used for installing a probe and comprises a second sliding block which is arranged on the arc-shaped frame 3 and can slide along the arc-shaped frame 3, and a strip sliding block which is arranged on the second sliding block and can slide along the vertical direction; it should be noted that the probe is mounted on the long slide block.
When the locking mechanism of the brain stereotactic instrument with the locking mechanism of the embodiment is used, the circular arc block 222 needs to be opened firstly, the fixed ring 22 is placed in the connecting ring 17, then the circular arc block 222 is closed, the circular arc block 222 is propped against the circular arc block 222 through the locking rod 2233, the circular arc block 222 is not opened, and simultaneously the locking rod 2233 realizes self locking of the circular arc block 222 under the action of the second spring 2234. When the circular arc block 222 needs to be opened, if the circular arc block 222 is not locked, the locking rod 2233 is directly pulled, so that the circular arc block 222 can be conveniently opened, and the fixing ring 22 is easily separated from the connection with the connecting ring 17. If the circular arc block 222 is locked, the locking screw 2236 needs to be rotated to release, so that the first sliding block 2232 is reset under the action of the first spring 2235, and then the locking rod 2233 is pulled to open the circular arc block 222. The locking mechanism of the brain stereotactic instrument has the advantages of convenient use and stable locking.
Further, as shown in fig. 4, the ring 221 includes a full ring portion 2211 and a half ring portion 2212, where the half ring portion 2212 can form a circle together with the circular arc block 222, and the circular arc block 222 is locked to form a full ring.
Further, as shown in fig. 6, the end of the arc block 222 is provided with a projection 2220 to cooperate with a locking rod 2233, and the locking rod 2233 extends below the projection 2220 and abuts against the projection 2220, so that the arc block 222 can be locked.
Further, as shown in fig. 7, the locking lever 2233 has a first inclined surface 2237, the projection 2220 has a second inclined surface 2221 that mates with the first inclined surface 2237, and the cooperation of the first inclined surface 2237 and the second inclined surface 2221 can provide a certain pre-tightening force to the circular arc block 222 while increasing the contact area.
Further, as shown in fig. 8, the front end 2238 of the locking screw 2236 has a tapered surface, and the first sliding block 2232 has a third tapered surface 2239 that mates with the tapered surface of the front end 2238 of the locking screw 2236. During tightening of the locking screw 2236, by virtue of the engagement of the tapered surface with the third angled surface 2239, a pulling force is applied to the first slider 2232, causing it to move the locking rod 2233 upward together, providing a continuous force to the locking rod 2233 against the locking arcuate block 222.
Further, the locking rod 2233 has a handle at one end to facilitate pulling to the locking rod 2233.
Further, the outer housing 2231 is fixed by screws to facilitate assembly.
Further, the bottom frame 11 is formed by mutually splicing four sides.
Further, the first spring 2235 is a cylindrical spring sleeved on the sliding rod, and two ends of the first spring 2235 respectively abut against the inner wall of the outer housing 2231 and the first sliding block 2232.
The top cross bar 23 is provided with a transverse groove 24, and the second horizontal sliding block of the probe mounting assembly 4 extends into the transverse groove 24 to be matched with the transverse groove 24. The arc-shaped frame 3 is arc-shaped, and the central angle of the arc is 100 degrees to 140 degrees, such as 100 degrees, 110 degrees, 120 degrees or 140 degrees. The arc-shaped frame 3 is not arranged to be semicircular, but the arc-shaped angle is reduced as much as possible under the condition of meeting the use, so that the weight of the arc-shaped frame 3 can be reduced, and deformation caused by overweight of the arc-shaped frame 3 is prevented. The bottom horizontal mounting blocks 13 and/or the vertical slide blocks 15 and/or the fixing rings 22 and/or the top cross bars 23 and/or the arc-shaped frame 3 are engraved with scale lines or form scale line protrusions.
With the above-described preferred embodiments according to the present application as a teaching, the worker skilled in the art could make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of claims.
Claims (8)
1. A brain stereotactic machine locking mechanism, comprising:
The circular arc block (222) is hinged on the circular ring (221);
A locking block (223) fixed on the circular ring (221) for locking the circular arc block (222), the locking block (223) comprising: an outer case (2231) having an inner cavity, a first sliding block (2232) provided in the outer case (2231) and capable of sliding, a locking screw (2236) provided on the outer case (2231), a locking lever (2233) provided on the first sliding block (2232), a first spring (2235) driving the first sliding block (2232) to return, a second spring (2234) driving the locking lever (2233) to return, and a circular arc block (222) can be kept in a locked state after the locking lever (2233) returns, and the locking screw (2236) can be tightened at this time to lock the first sliding block (2232) from moving.
2. The brain stereotactic machine locking mechanism of claim 1, wherein said ring (221) comprises a full ring portion (2211) and a half ring portion (2212), said half ring portion (2212) being capable of forming a circle with the circular arc piece (222), said full ring being formed when the circular arc piece (222) is locked.
3. The brain stereotactic machine locking mechanism according to claim 1, wherein the end of the circular arc block (222) is provided with a projection (2220) to cooperate with a locking rod (2233), and the locking rod (2233) extends below the projection (2220) to abut against the projection (2220).
4. A brain stereotactic machine locking mechanism as claimed in claim 3, wherein said locking bar (2233) has a first inclined surface (2237) and said projection (2220) has a second inclined surface (2221) thereon which mates with said first inclined surface (2237).
5. The brain stereotactic machine locking mechanism according to claim 1, wherein the front end (2238) of the locking screw (2236) is a conical surface, and a third inclined surface (2239) which is matched with the conical surface of the front end (2238) of the locking screw (2236) is arranged on the first sliding block (2232).
6. The brain stereotactic machine locking mechanism of claim 1, wherein one end of said locking bar (2233) is a handle to facilitate pulling to said locking bar (2233).
7. The brain stereotactic machine locking mechanism of claim 1, wherein said outer housing (2231) is fixed by screws.
8. The brain stereotactic machine locking mechanism according to claim 1, wherein the first spring (2235) is a cylindrical spring sleeved on the slide rod, and two ends of the first spring (2235) are respectively abutted against the inner wall of the outer shell (2231) and the first sliding block (2232).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322415645.9U CN221205707U (en) | 2023-09-05 | 2023-09-05 | Brain stereotactic instrument locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322415645.9U CN221205707U (en) | 2023-09-05 | 2023-09-05 | Brain stereotactic instrument locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221205707U true CN221205707U (en) | 2024-06-25 |
Family
ID=91567897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322415645.9U Active CN221205707U (en) | 2023-09-05 | 2023-09-05 | Brain stereotactic instrument locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221205707U (en) |
-
2023
- 2023-09-05 CN CN202322415645.9U patent/CN221205707U/en active Active
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