Magnetic resonance brain puncture positioning cap

Abstract

The utility model discloses a kind of magnetic resonance cranium and brain puncture positioning cap, including hemispherical cap body, the cap body includes wearing ring, semi-ring on the wearing ring and fixed band on the wearing ring, the semi-ring is semicircular and is vertically set on the plane of wearing ring, two ends of the semi-ring are symmetrically installed in the axial side of the wearing ring, and one end of the semi-ring is fixedly connected with the wearing ring, and the other end is movably connected between the wearing ring by a group of adjusting components, the end position of the semi-ring can be adjusted by the adjusting component to adjust the height of the cap body;Several groups of positioning mechanisms are movably installed on the semi-ring;The utility model can flexibly adjust the depth of cap body according to the head shape and size of patient by setting semi-ring that can be adjusted relative to wearing ring, to realize accurate adaptation to different head size, significantly improve the versatility and wearing stability of positioning cap.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, and in particular to a magnetic resonance brain puncture positioning cap. Background Technology

[0002] Magnetic resonance-guided craniotomy (MRI) is an important minimally invasive treatment widely used in the treatment of intracranial diseases such as cerebral hemorrhage. This technique has advantages such as minimal trauma, rapid recovery, and fewer complications. Especially in the treatment of cerebral hemorrhage, it can effectively remove hematomas and reduce damage to brain tissue. However, the success of the surgery depends on precise localization, and the MRI craniotomy localization cap is one of the key tools for achieving this goal.

[0003] A patent with publication number CN220833113U discloses a magnetic resonance imaging (MRI) craniotomy positioning cap. The cap body includes a first plastic rod, a mounting ring, a first locking device, and a second plastic rod. The second plastic rod can be moved via the first locking device, thereby adjusting the size of the hemispherical cage frame to accommodate different head sizes. However, the first plastic rod and the mounting ring are not adjustable, meaning the depth of the positioning cap is not adjustable, resulting in poor positioning performance. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a magnetic resonance brain puncture positioning cap that can adjust the depth of the positioning cap so that the positioning cap can fit the patient's head better and increase the accuracy of positioning.

[0005] To solve the above-mentioned technical problems, the present invention provides a magnetic resonance imaging (MRI) craniotomy positioning cap, comprising a hemispherical cap body. The cap body includes a wearing ring, a semi-ring disposed on the wearing ring, and a fixing strap disposed on the wearing ring. The semi-ring is semi-circular and perpendicular to the plane of the wearing ring. The two ends of the semi-ring are symmetrically mounted on one axial side of the wearing ring. One end of the semi-ring is fixedly connected to the wearing ring, and the other end is movably connected to the wearing ring through a set of adjustment components. The height of the cap body can be adjusted by adjusting the end position of the semi-ring through the adjustment components. Several sets of positioning mechanisms are movably mounted on the semi-ring.

[0006] Furthermore, the adjustment component includes a groove, which is formed at the position of the wear ring corresponding to the movable end of the half ring. The groove matches the half ring and passes through the wear ring axially. The movable end of the half ring extends into the groove and is slidably connected to the groove.

[0007] Furthermore, the adjustment assembly also includes a fixing member disposed between the through groove and the movable end of the semi-ring to fix the movable end of the semi-ring relative to the wearing ring.

[0008] Furthermore, the fixing component includes a lever, the wearing ring has a sliding groove communicating with the through groove, the sliding groove extends radially outward through the wearing ring, the lever is disposed in the sliding groove and can slide in the sliding groove along the circumference of the wearing ring, the movable end of the half ring has a plurality of insertion holes on the side facing the sliding groove, the plurality of insertion holes are evenly spaced along the circumference of the half ring, and the lever has a protruding insertion rod at the position corresponding to the plurality of insertion holes.

[0009] Furthermore, one side of the lever protrudes outside the slide groove, and an anti-slip rubber strip is provided on the side of the lever protruding from the slide groove.

[0010] Furthermore, the positioning mechanism includes a movable block and positioning rods symmetrically arranged on both sides of the movable block. The movable block is disposed on the semi-ring and can slide along the semi-ring. The positioning rod is arc-shaped, and one end of the positioning rod is connected to the lateral side of the movable block and can rotate relative to the movable block. The wearing ring has a slot on one side facing the semi-ring. The other end of the positioning rod extends into the slot and can slide relative to the slot. Each positioning rod is provided with a positioning element.

[0011] Furthermore, the positioning element includes a first positioning block that is damped and slidably disposed on the corresponding positioning rod, the first positioning block having a horizontal extension rod, and a second positioning block slidably disposed on the extension rod.

[0012] Furthermore, the second positioning block has a through hole for the extension rod to pass through, and a limiting component is provided between the second positioning block and the extension rod at the position corresponding to the through hole to prevent the second positioning block from moving relative to the extension rod.

[0013] Furthermore, the limiting component includes a limiting block and a limiting hole. The second positioning block has a limiting groove that is perpendicular to and communicates with the through hole. The limiting block is slidably disposed in the limiting groove, and an elastic element is provided between the limiting block and the limiting groove. The limiting block can be retracted into the limiting groove or extended out of the limiting groove under the rebound force of the elastic element. The limiting hole is opened on the extension rod at a position corresponding to the limiting block.

[0014] Furthermore, the elastic element is a helical spring.

[0015] This novel magnetic resonance imaging (MRI) craniotomy positioning cap offers at least the following advantages: By incorporating an adjustable semi-ring relative to the wearing ring, the cap's depth can be flexibly adjusted according to the patient's head shape and size, achieving precise fit for different head sizes and significantly improving the cap's versatility and wearing stability. Simultaneously, the position of the positioning rod on the semi-ring, as well as the first and second positioning blocks on the rod, are adjustable, further optimizing the precise alignment of the positioning point and effectively solving the positioning deviation problem caused by size mismatch in traditional positioning caps. This design not only improves positioning accuracy and reduces surgical risks but also simplifies the procedure, making the surgery more efficient and reliable, significantly improving surgical outcomes and patient recovery quality, and possessing significant clinical application value. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the magnetic resonance brain puncture positioning cap of this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of an embodiment of the magnetic resonance brain puncture positioning cap of this utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of an embodiment of the magnetic resonance brain puncture positioning cap of this utility model. Figure 3 ;

[0020] Figure 4 for Figure 3 A partial structural diagram at point A in the middle;

[0021] Figure 5 This is a schematic diagram of the structure of the prying block in one embodiment of the magnetic resonance cranial puncture positioning cap of this utility model;

[0022] Figure 6 This is a schematic diagram of the positioning mechanism in one embodiment of the magnetic resonance cranial puncture positioning cap of this utility model;

[0023] Figure 7 This is a partial cross-sectional view of the positioning element in one embodiment of the magnetic resonance cranial puncture positioning cap of this utility model;

[0024] Figure 8 This is a cross-sectional view of the second positioning block in one embodiment of the magnetic resonance brain puncture positioning cap of this utility model.

[0025] The meanings of the labels in the attached diagram are as follows:

[0026] 1. Hat body, 11. Wearing ring, 12. Half ring, 13. Fixing strap, 2. Adjustment component, 21. Through groove, 22. Toggle block, 221. Groove, 222. Rubber block, 23. Slide groove, 24. Insertion hole, 25. Insertion rod, 26. Anti-slip rubber strip, 3. Positioning mechanism, 31. Moving block, 32. Positioning rod, 33. Slot, 34. Positioning component, 341. First positioning block, 342. Extension rod, 343. Second positioning block, 344. Through hole, 345. Limiting block, 346. Limiting hole, 347. Protruding edge, 348. Elastic component, 349. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Please refer to Figure 1 and Figure 2 The magnetic resonance imaging (MRI) craniotomy positioning cap of this invention includes a hemispherical cap body 1. The cap body 1 includes a wearing ring 11, a semi-ring 12 disposed on the wearing ring 11, and a fixing strap 13 disposed on the wearing ring 11. The wearing ring 11 is worn on the patient's head, the semi-ring 12 cooperates with the wearing ring 11 to form the hemispherical cap body 1, and the fixing strap 13 cooperates with the wearing ring 11 and the semi-ring 12 to fix the cap body 1 to the patient's head. An adjustment component 2 is provided between the semi-ring 12 and the wearing ring 11 to allow the depth of the cap body 1 to be adjustable, and several sets of positioning mechanisms 3 are also installed on the semi-ring 12.

[0029] The wearing ring 11 is circular, and the fixing strap 13 includes two straps, which are symmetrically disposed at the lower end of the wearing ring 11. Figure 1 For example, both of the fixing straps 13 have a fixed end that is fixedly connected to the wearing ring 11, and the end of each of the two fixing straps 13 that is not connected to the wearing ring 11 is a movable end. The movable ends of the two fixing straps 13 are respectively provided with male and female Velcro fasteners (not shown in the figure), so that the movable ends of the two fixing straps 13 can be connected to each other to fix the cap body 1 to the patient's head.

[0030] The semi-circular semi-ring 12 is perpendicular to the plane containing the wearing loop 11. On the horizontal projection plane, the semi-ring 12 is arranged radially along the wearing loop 11; that is, both ends of the semi-ring 12 are symmetrically positioned on one axial side of the wearing loop 11. Specifically, one end of the semi-ring 12 is fixedly connected to the wearing loop 11, and the other end of the semi-ring 12 (i.e., the movable end of the semi-ring 12) is movably connected to the wearing loop 11 via a set of adjusting components 2. The height of the cap 1 can be adjusted by adjusting the end position of the semi-ring 12 through the adjusting components 2.

[0031] Please refer to Figure 3 , Figure 4 and Figure 5 The adjusting component 2 includes a slot 21 and a fixing member. The slot 21 is formed at the position of the wearing ring 11 corresponding to the movable end of the half-ring 12. The slot 21 matches the half-ring 12 and passes through the wearing ring 11 axially. The movable end of the half-ring 12 extends into the slot 21 and is slidably connected to the slot 21. The fixing member is located between the movable end of the half-ring 12 and the slot 21 and includes a lever 22. The wearing ring 11 has a sliding groove 23 that communicates with the slot 21. The sliding groove 23 is formed along the circumference of the wearing ring 11 and passes through the wearing ring 11 radially outward. One end of the sliding groove 23 communicates with the corresponding end of the slot 21 and partially overlaps with it, so that when the half-ring 12 is located in the slot 21, it is also partially located in the sliding groove 23. The lever 22 is disposed within the slide groove 23 and can slide with damping along the circumference of the wearing ring 11 within the slide groove 23. The movable end of the semi-ring 12 has several insertion holes 24 on the side facing the slide groove 23, and these insertion holes 24 are evenly spaced along the circumference of the semi-ring 12. The lever 22 has protruding insertion rods 25 corresponding to the positions of the insertion holes 24. When the lever 22 moves to the end of the slide groove 23 that communicates with the through groove 21, the insertion rods 25 can be inserted into the corresponding insertion holes 24, thereby fixing the relative position of the movable end of the semi-ring 12 and the wearing ring 11. Furthermore, one side of the lever 22 protrudes outside the slide groove 23, and the side of the lever 22 protruding from the slide groove 23 is provided with an anti-slip rubber strip 26. The anti-slip strips 26 are numerous, and each anti-slip strip 26 is vertically arranged. These anti-slip strips 26 are evenly spaced along the circumference of the wearing ring 11 on the outer peripheral wall of the lever 22. When the user flicks the lever 22 with their finger, the anti-slip strips 26 provide greater friction, making flicking easier. Furthermore, the lever 22 has grooves 221 on both its upper and lower surfaces, and each groove contains a rubber block 222 extending outward from the groove 221. The rubber block 222 increases the friction between the lever 22 and the sliding groove 23, making the lever 22 more stable.

[0032] Please refer to Figure 6The positioning mechanism 3 has several groups evenly spaced along the circumference of the semi-ring 12. Each group of the positioning mechanism 3 includes a moving block 31 and positioning rods 32 symmetrically arranged on both sides of the moving block 31. The moving block 31 is C-shaped, and the middle through-hole of the C-shape matches and is engaged with the semi-ring 12. The moving block 31 can slide with damping relative to the semi-ring 12. The positioning rod 32 is arc-shaped, and one end of the positioning rod 32 is connected to the lateral side of the moving block 31 and can rotate relative to the moving block 31 around its own axis. The wearing ring 11 has a slot 33 on the side facing the semi-ring 12 (that is, the upper side of the wearing ring 11). The other end of the positioning rod 32 extends into the slot 33 and can slide relative to the slot 33. When the movable block 31 slides on the semi-ring 12 and its position changes, the height of the movable block 31 relative to the wearing ring 11 also changes. At this time, the end of the positioning rod 32 that extends into the slot 33 can slide up and down within the slot 33 to adapt to this height change. Several positioning rods 32, together with the semi-ring 12 and the wearing ring 11, form a hemispherical cage shape. Each positioning rod 32 is provided with a positioning element 34.

[0033] Please refer to Figure 7 The positioning member 34 includes a first positioning block 341 that is damped and slidably disposed on the corresponding positioning rod 32. A horizontal extension rod 342 is provided on one lateral side of the first positioning block 341, and a second positioning block 343 is provided on the extension rod 342. The second positioning block 343 is slidable along the length direction of the extension rod 342. Specifically, a through hole 344 is formed in the middle of the second positioning block 343 for the extension rod 342 to pass through, and the through hole 344 laterally penetrates the second positioning block 343. A limiting component is provided between the second positioning block 343 and the extension rod 342 at the position corresponding to the through hole 344 to prevent the second positioning block 343 from moving relative to the extension rod 342.

[0034] Please refer to Figure 8The limiting component includes a limiting block 345 and a limiting hole 346. A limiting groove 347, perpendicular to and communicating with the through hole 344, is formed in the second positioning block 343. The limiting block 345 is vertically slidably disposed within the limiting groove 347. The limiting block 345 includes a first portion matching the limiting groove 347 and a second portion located at the lower end of the first portion. The second portion is hemispherical. A protruding edge 348 is provided on the limiting groove 347 to prevent the first portion from extending out of the limiting groove 347. An elastic element 349 is provided between the first portion and the limiting groove 347. In the illustrated embodiment, the elastic element 349 is a helical spring. In other embodiments, the elastic element 349 can also be a spring sheet or other elastic element, as long as it can cause the limiting block 345 to elastically return to its original position. The outer diameter of the second portion is smaller than the size of the first portion, therefore it can extend out of the limiting groove 347. The limiting hole 346 is opened on the extension rod 342 at the position corresponding to the limiting block 345. There are several limiting holes 346, and the several limiting holes 346 are evenly spaced along the length direction of the extension rod 342.

[0035] It should be noted that both the semi-ring 12 and the positioning rod 32 have good toughness and are capable of deformation.

[0036] The working method of one embodiment of the magnetic resonance cranial puncture positioning cap of this utility model is as follows: In use, the wearing ring 11 can be worn on the patient's head first, and the semi-ring 12 can be adjusted according to the size of the patient's head. The specific steps are as follows: Slide the lever 22 so that it is located in the groove 23 away from the through groove 21. At this time, the insertion rod 25 is not located in the insertion hole 24, and the movable end of the semi-ring 12 can slide in the through groove 21. Move the movable end of the semi-ring 12 so that the semi-ring 12 and the wearing ring 11 form a depth that matches the patient's head. Then, move the lever 22 to move it closer to the through groove 21 so that the insertion rod 25 is inserted into the corresponding insertion hole 24. At this time, the movable end of the semi-ring 12 is fixed. The movable ends of the two fixing straps 13 are fixed by the male and female Velcro fasteners, and the cap body 1 is fixed to the patient's head.

[0037] The user can also adjust the position of the positioning rod 32 to place it in the desired position. During adjustment, the moving block 31 slides relative to the semi-ring 12, causing the positioning rod 32 to also shift. After the position of the positioning rod 32 is adjusted, the first positioning block 341 can be moved to a suitable position, and then the second positioning block 343 can be moved relative to the extension rod 342 to determine its position. When the second positioning block 343 is moved, the limiting block 345, originally engaged in one of the limiting holes 346, retracts into the limiting groove 347 and moves out of the original limiting hole 346 under the force of the side wall of the limiting groove 347. At this time, the elastic member 349 is in a compressed state. When the limiting block 345 aligns with another limiting hole 346, the limiting block 345 moves out of the limiting groove 347 and engages in the corresponding limiting hole 346 under the rebound force of the elastic member 349. Since the second positioning block 343 is the final positioning point used as a reference, the design of the limiting component makes the position of the second positioning block 343 relative to the extension rod 342 more stable and less prone to movement.

[0038] Compared with existing technologies, this novel magnetic resonance brain puncture positioning cap features an adjustable semi-ring relative to the wearing ring. This allows for flexible adjustment of the cap's depth according to the patient's head shape and size, achieving precise fit for different head sizes and significantly improving the cap's versatility and wearing stability. Furthermore, the position of the positioning rod on the semi-ring, as well as the first and second positioning blocks on the rod, are adjustable, further optimizing the precise alignment of the positioning point and effectively solving the positioning deviation problem caused by size mismatch in traditional positioning caps. This design not only improves positioning accuracy and reduces surgical risks but also simplifies the operation process, making the surgical procedure more efficient and reliable, significantly improving surgical outcomes and patient recovery quality, and possessing significant clinical application value.

Claims

1. A magnetic resonance imaging (MRI) cranial puncture positioning cap, comprising a hemispherical cap body, characterized in that: The hat body includes a wearing loop, a semi-ring disposed on the wearing loop, and a fixing strap disposed on the wearing loop. The semi-ring is semi-circular and perpendicular to the plane where the wearing loop is located. The two ends of the semi-ring are symmetrically mounted on one side of the axial direction of the wearing loop. One end of the semi-ring is fixedly connected to the wearing loop, and the other end is movably connected to the wearing loop through a set of adjustment components. The height of the hat body can be adjusted by adjusting the end position of the semi-ring through the adjustment components. Several sets of positioning mechanisms are movable on the semi-ring.

2. The magnetic resonance brain puncture positioning cap as described in claim 1, characterized in that: The adjustment component includes a slot, which is formed at the position of the wear ring corresponding to the movable end of the half ring. The slot matches the half ring and passes through the wear ring axially. The movable end of the half ring extends into the slot and is slidably connected to the slot.

3. The magnetic resonance cranial puncture positioning cap as described in claim 2, characterized in that: The adjustment assembly also includes a fixing member disposed between the through groove and the movable end of the semi-ring to fix the movable end of the semi-ring relative to the wearing ring.

4. The magnetic resonance cranial puncture positioning cap as described in claim 3, characterized in that: The fastener includes a lever, and the wear ring has a groove communicating with the through groove. The groove extends radially outward through the wear ring. The lever is disposed in the groove and can slide in the groove along the circumference of the wear ring. The movable end of the half ring has a plurality of insertion holes on one side facing the groove. The plurality of insertion holes are evenly spaced along the circumference of the half ring. The lever has a protruding insertion rod at the position corresponding to the plurality of insertion holes.

5. The magnetic resonance brain puncture positioning cap as described in claim 4, characterized in that: One side of the lever protrudes outside the slide groove, and an anti-slip rubber strip is provided on the side of the lever protruding from the slide groove.

6. The magnetic resonance brain puncture positioning cap as described in claim 1, characterized in that: The positioning mechanism includes a movable block and positioning rods symmetrically arranged on both sides of the movable block. The movable block is disposed on the semi-ring and can slide along the semi-ring. The positioning rod is arc-shaped. One end of the positioning rod is connected to the lateral side of the movable block and can rotate relative to the movable block. The wearing ring has a slot on one side facing the semi-ring. The other end of the positioning rod extends into the slot and can slide relative to the slot. Each positioning rod is provided with a positioning element.

7. The magnetic resonance brain puncture positioning cap as described in claim 6, characterized in that: The positioning element includes a first positioning block that is damped and slidably disposed on the corresponding positioning rod, the first positioning block having a horizontal extension rod, and a second positioning block slidably disposed on the extension rod.

8. The magnetic resonance brain puncture positioning cap as described in claim 7, characterized in that: The second positioning block has a through hole for the extension rod to pass through, and a limiting component is provided between the second positioning block and the extension rod at the position corresponding to the through hole to prevent the second positioning block from moving relative to the extension rod.

9. The magnetic resonance brain puncture positioning cap as described in claim 8, characterized in that: The limiting component includes a limiting block and a limiting hole. The second positioning block has a limiting groove that is perpendicular to and communicates with the through hole. The limiting block is slidably disposed in the limiting groove, and an elastic element is provided between the limiting block and the limiting groove. The limiting block can be retracted into the limiting groove or extended out of the limiting groove under the rebound force of the elastic element. The limiting hole is opened on the extension rod at a position corresponding to the limiting block.

10. The magnetic resonance brain puncture positioning cap as described in claim 9, characterized in that: The elastic element is a helical spring.

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