A decompression window protection device after cranial craniectomy

Abstract

The present invention belongs to the technical field of medical devices, and discloses a decompression window protection device after cranial craniotomy, comprising a shell, a fixing belt fixedly connected to the bottom of the shell, a base fixedly installed at the bottom of the inner wall of the shell, an inner liner rotatably installed between the top of the base and the inner wall of the shell, an empty groove opened on the inner wall of the inner liner, and a clamping groove opened on the top of the inner liner. The device drives the static friction ring, the clamping block and the inner liner to rotate to a position where the empty groove just corresponds to the decompression window through a pull plate, and then releases the pull plate to reset the dynamic friction ring, the limit column and the clamping block under the action of spring 1, so that the static friction ring and the dynamic friction ring are re-contacted and generate friction force, and the inner liner after the rotation position is limited by the cooperation of the clamping block, and the design enables the position of the inner liner and the empty groove to be flexibly changed according to the position of the decompression window, thereby giving the device the function of buffering protection of the decompression window gap through the beginning of the empty groove.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a decompression window protection device after cranial craniotomy surgery. Background Art

[0002] Cranial craniectomy and compression surgery are used in various central nervous system diseases such as craniocerebral injury, cerebrovascular disease, brain tumors, etc., and have become a routine surgical method in neurosurgery. It can effectively reduce intracranial pressure and save patients' lives. In postoperative care, the dressing material in the craniectomy area is generally marked with a "no compression" logo to protect the decompression window from being damaged by hard objects. In the prior art, a full protective cover is generally provided to be worn on the patient's head, with a soft layer inside as a buffer, and a hard material on the outside to prevent rigid objects, but the soft layer inside is filled with solid matter, and it does not have a gap buffer zone between it and the decompression window. In addition, since the position of the decompression window will change according to the surgical situation and the patient's condition, the traditional protection device has long been no longer applicable. Therefore, based on the above-mentioned potential defects, the present invention designs a decompression window protection device after cranial craniectomy surgery that can synchronously adapt to the position of the decompression window. Summary of the invention

[0003] The object of the present invention is to provide a decompression window protection device after cranial craniotomy surgery to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: A decompression window protection device after cranial craniotomy surgery comprises a shell, a fixing belt is fixedly connected to the bottom of the shell, a base is fixedly installed on the bottom of the inner wall of the shell, an inner liner is rotatably installed between the top of the base and the inner wall of the shell, an empty groove is opened on the inner wall of the inner liner, a clamping slot is opened on the top of the inner liner, a fixing cylinder is fixedly installed on the top of the shell, a limiting column is movably sleeved on the top of the fixing cylinder, a pull plate is fixedly connected to one end of the limiting column, a clamping block is fixedly connected to the other end of the limiting column, the clamping block is adapted to be clamped in the clamping slot, a static friction ring is fixedly installed on the top of the inner wall of the shell, a limiting ring and a spring are movably sleeved on the outer surface of the limiting column, and a dynamic friction ring located below the spring is fixedly installed, the dynamic friction ring abuts against the static friction ring, and the contact surface between the static friction ring and the dynamic friction ring is a material with a high friction coefficient.

[0005] As a preferred solution of the present invention, placement grooves are provided on both the front and rear sides of the inner wall of the empty slot, a spring 2 is fixedly installed on one side of the inner wall of the placement groove, and multiple groups of fixing strips are fixedly installed on the other side of the inner wall of the placement groove. The inner wall of the placement groove is also movably connected with a movable plate, and an adapter plate is fixedly installed on the outer side of the movable plate. The adapter plate rotates around the axis of the outer shell along the inner wall of the empty slot.

[0006] As a preferred solution of the present invention, a side groove is provided on one side of the adapter plate, and the inner wall of the adapter plate is kept flush with the inner wall of the inner container.

[0007] As a preferred solution of the present invention, the outer surface of the card block is provided with multiple groups of protrusions, and is adapted to engage with the inner wall of the card slot, so that the card block can move up and down along the axis of the card slot and drive the card slot to rotate.

[0008] As a preferred solution of the present invention, an arc-shaped groove is provided on the outer surface of the pull plate, and a gap is left between the bottom of the pull plate and the top of the fixing tube.

[0009] As a preferred solution of the present invention, the limit ring is located at the top of the inner wall of the fixed cylinder, the two ends of the spring one are elastically connected to the limit ring and the dynamic friction ring respectively, the contact surfaces of the static friction ring and the dynamic friction ring are made of carbon fiber composite materials, and the extrusion force is generated by the spring one.

[0010] As a preferred solution of the present invention, a plurality of fixing grooves are provided on the outer side surface of the movable plate, the fixing strips are adapted to be snap-fitted into the fixing grooves, and the number of the fixing strips is the same as the number of the fixing grooves.

[0011] As a preferred solution of the present invention, the second spring is overall in a "U" shape and is engaged with the inner wall of the placement groove and abuts against the inner annular surface of the movable plate.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. The device is provided with a rotatable inner liner located on the inner wall of the outer shell, so that the empty slot can perfectly correspond to the decompression windows at different positions of different patients through the rotation of the inner liner, so that the inner liner has a gap buffer zone, and a fixed cylinder is installed on the top of the outer shell, and a limit ring, a spring 1, a static friction ring, a dynamic friction ring, a limit column and a card block are installed inside the fixed cylinder. Through the adapter card connection between the card block and the card slot, the limit column can move up and down along the axis of the fixed cylinder driven by the pull plate. When the pull plate and the limit column move up, they can drive the dynamic friction ring to move up and compress the spring 1, thereby generating The downward reset pressure disengages the dynamic friction ring and the static friction ring from contact, making it easier for the pull plate to drive the static friction ring, the clamping block and the inner liner to rotate to a position where the empty slot just corresponds to the pressure relief window. The pull plate is then released to reset the dynamic friction ring, the limit column and the clamping block under the action of spring 1, so that the static friction ring and the dynamic friction ring are re-contacted and generate friction. The inner liner is restricted in rotation by the cooperation of the clamping block, so that the position of the inner liner and the empty slot can be rotated and adjusted according to the position of the pressure relief window, thereby providing the device with the function of buffering protection for the pressure relief window gap through the opening of the empty slot.

[0014] 2. Then, the device is further provided with a placement groove on the basis of the inner wall of the empty groove, and a movable plate and an adapter plate are installed, so that the adapter plate can rotate around the axis of the shell and drive the movable plate to move toward the inner wall of the empty groove. The inner wall of the placement groove is provided with multiple sets of fixing strips, and the movable plate is squeezed by spring 2 located on the inner wall of the placement groove so that the outer side of spring 2 is close to the inner wall of the placement groove, and the fixing strip is inserted into the fixing groove in a relative motion manner to ensure that the movable plate can be restricted from moving after stopping at any position, and the position of the adapter plate on the inner wall of the empty groove is changed synchronously by adjusting the position of the movable plate on the inner wall of the placement groove, and cooperates with the empty groove to form a buffer area corresponding to the decompression window gap, thereby further improving the adaptability of the device.

[0015] 3. The present invention utilizes the slots provided on the inner wall of the liner to form a first-level gap buffer zone corresponding to the decompression window, utilizes the solid part of the liner around the slots to abut against the patient's head to support and protect the decompression window, and then utilizes the adapter plate in a movable position to dynamically abut against the patient's head so that the solid part located around the decompression window can be equidistant from the decompression window, which helps to balance the force on the skull and can also provide better gap buffer protection for the decompression window. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front perspective schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a bottom-up stereoscopic schematic diagram of the structure of the present invention;

[0018] Figure 3 It is a side cutaway schematic diagram of the structure of the present invention;

[0019] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at center A;

[0020] Figure 5 It is a schematic diagram of the separation of the structure of the present invention;

[0021] Figure 6 It is a top view cutaway schematic diagram of the inner container of the present invention;

[0022] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at B in the middle;

[0023] Figure 8 It is a schematic diagram of the separation of the fixing strip, the second spring, the movable plate and the adapter plate of the present invention.

[0024] In the figure: 1. outer shell; 2. fixing belt; 3. fixing cylinder; 4. base; 5. liner; 6. empty slot; 7. limiting column; 8. pull plate; 9. clamping block; 10. clamping slot; 11. static friction ring; 12. dynamic friction ring; 13. limiting ring; 14. spring one; 15. placement slot; 16. fixing strip; 17. spring two; 18. movable plate; 19. adapter plate; 20. side slot; 21. fixing slot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 8 As shown, an embodiment of the present invention provides a decompression window protection device after cranial craniotomy surgery, comprising a shell 1, a fixing belt 2 is fixedly connected to the bottom of the shell 1, a base 4 is fixedly installed on the bottom of the inner wall of the shell 1, an inner liner 5 is rotatably installed between the top of the base 4 and the inner wall of the shell 1, an empty groove 6 is provided on the inner wall of the inner liner 5, and a clamping groove 10 is provided on the top of the inner liner 5, a fixing cylinder 3 is fixedly installed on the top of the shell 1, a limiting column 7 is movably sleeved on the top of the fixing cylinder 3, a pull plate 8 is fixedly connected to one end of the limiting column 7, and a clamping block 9 is fixedly connected to the other end of the limiting column 7, and the clamping block 9 is adapted to be clamped in the clamping groove 10, a static friction ring 11 is fixedly installed on the top of the inner wall of the shell 1, a limiting ring 13 and a spring 14 are movably sleeved on the outer surface of the limiting column 7, and a dynamic friction ring 12 located below the spring 14 is fixedly installed, the dynamic friction ring 12 is abutted against the static friction ring 11, and the contact surface of the static friction ring 11 and the dynamic friction ring 12 is made of a material with a high friction coefficient;

[0027] The device is provided with a rotatable inner liner 5 located on the inner wall of the outer shell 1, so that the empty groove 6 can perfectly correspond to the decompression windows at different positions of different patients through the rotation of the inner liner 5, so that the inner liner 5 has a gap buffer zone, and a fixed cylinder 3 is installed on the top of the outer shell 1, and a limit ring 13, a spring 14, a static friction ring 11, a dynamic friction ring 12, a limit column 7 and a clamping block 9 are installed inside the fixed cylinder 3. Through the adaptive clamping connection between the clamping block 9 and the clamping groove 10, the limit column 7 can move up and down along the axis of the fixed cylinder 3 under the drive of the pull plate 8. When the pull plate 8 and the limit column 7 move up, they can drive the dynamic friction ring 12 to move up and compress the spring 14, thereby producing The pull plate 8 is then released to reset the dynamic friction ring 12, the limiting column 7 and the block 9 under the action of the spring 14, so that the static friction ring 11 and the dynamic friction ring 12 are re-contacted and generate friction force, and the inner liner 5 after the rotation position is limited by the cooperation of the block 9, so that the position of the inner liner 5 and the empty slot 6 can be rotated and adjusted according to the position of the decompression window, thereby providing the function of buffering protection of the decompression window gap through the opening of the empty slot 6.

[0028] Among them, both the front and rear sides of the inner wall of the empty slot 6 are provided with a placement slot 15, one side of the inner wall of the placement slot 15 is fixedly installed with a spring 2 17, and the other side of the inner wall of the placement slot 15 is fixedly installed with multiple sets of fixing strips 16, and the inner wall of the placement slot 15 is also movably connected with a movable plate 18, and an adapter plate 19 is fixedly installed on the outer side of the movable plate 18, and the adapter plate 19 rotates around the axis of the shell 1 along the inner wall of the empty slot 6;

[0029] Then, the device is further provided with a placement groove 15 on the basis of the inner wall of the empty groove 6, and a movable plate 18 and an adapter plate 19 are installed, so that the adapter plate 19 can rotate around the axis of the shell 1 and drive the movable plate 18 to move toward the inner wall of the empty groove 6. The inner wall of the placement groove 15 is provided with multiple groups of fixing strips 16, and the movable plate 18 is squeezed by the spring 2 17 located on the inner wall of the placement groove 15, so that the outer side of the spring 2 17 is close to the inner wall of the placement groove 15, and the fixing strip 16 is inserted into the fixing groove 21 in a relative movement manner to ensure that the movable plate 18 can be restricted from moving after stopping at any position. By adjusting the position of the movable plate 18 on the inner wall of the placement groove 15, the position of the adapter plate 19 on the inner wall of the empty groove 6 is changed synchronously, and cooperates with the empty groove 6 to form a buffer area corresponding to the decompression window gap, thereby further improving the adaptability of the device.

[0030] The present invention utilizes the slot 6 opened on the inner wall of the liner 5 to form a first-level gap buffer zone corresponding to the decompression window, and utilizes the solid part of the liner 5 around the slot 6 to abut against the patient's head to support and protect the decompression window. Then, the adapter plate 19 in a movable position is used to dynamically abut against the patient's head, so that the solid part located around the decompression window can be equidistant from the decompression window, which helps to balance the force on the skull and can also provide better gap buffer protection for the decompression window.

[0031] A side groove 20 is provided on one side of the adapter plate 19, and the inner wall of the adapter plate 19 is kept flush with the inner wall of the inner container 5;

[0032] The user can insert his finger into the side groove 20 and drive the adapter plate 19 and the movable plate 18 to move toward the side close to the spring 2 17, so that the movable plate 18 is out of contact with the inner wall of the placement groove 15, thereby making the fixing bar 16 out of the inside of the fixing groove 21. At this time, the movable plate 18 can move to adjust the position of the adapter plate 19 on the inner wall of the empty groove 6, and change the gap buffer area formed in the inner cavity of the empty groove 6.

[0033] The outer surface of the card block 9 is provided with a plurality of groups of convex points, and is adapted to be engaged with the inner wall of the card slot 10, so that the card block 9 can move up and down along the axis of the card slot 10, and drive the card slot 10 to rotate at the same time;

[0034] The convex point of the block 9 and the inner wall of the slot 10 are adapted to fit each other. This design enables the block 9 to move up and down along the inner wall of the slot 10 driven by the limiting column 7 and the pull plate 8. At the same time, the limiting column 7 can also drive the block 9 and the slot 10 to drive the inner liner 5 to rotate. The movements of the two do not interfere with each other. The elastic force of the spring 14 is used to compress the static friction ring 11 and the dynamic friction ring 12, and generate friction to limit the rotation of the inner liner 5 and the limiting column 7.

[0035] The outer surface of the pull plate 8 is provided with an arc-shaped groove, and a gap is left between the bottom of the pull plate 8 and the top of the fixed tube 3;

[0036] The arc-shaped groove on the outer surface of the pull plate 8 is convenient for the user to grasp the pull plate 8 and pull it upward to move, which is ergonomic.

[0037] Among them, the limit ring 13 is located at the top of the inner wall of the fixed cylinder 3, and the two ends of the spring 14 are elastically connected to the limit ring 13 and the dynamic friction ring 12 respectively. The contact surface of the static friction ring 11 and the dynamic friction ring 12 is made of carbon fiber composite material, and the extrusion force is generated by the spring 14;

[0038] The limiting ring 13 rotates with the spring 14, the dynamic friction ring 12 and the limiting column 7. If the spring 14 is elastically connected to the fixing tube 3, when the limiting column 7 rotates, the dynamic friction ring 12 will drive the spring 14 to rotate and cause it to undergo rotational deformation, thereby causing the limiting column 7 to reset after completing the rotation, thereby destroying the stability of the inner liner 5 after the position is adjusted.

[0039] The outer side of the movable plate 18 is provided with a plurality of fixing grooves 21, and the fixing strips 16 are adapted to be snapped into the fixing grooves 21, and the number of the fixing strips 16 and the fixing grooves 21 are the same;

[0040] The movable plate 18 is pressed tightly against the fixed strip 16 by the elastic compression of the second spring 17 , and the fixed strip 16 is inserted into the fixed groove 21 , thereby limiting the movement of the movable plate 18 .

[0041] The spring 2 17 is in a "U" shape and is engaged with the inner wall of the placement groove 15, and is in contact with the inner annular surface of the movable plate 18;

[0042] The second spring 17 is designed in a "U" shape, which abuts against the second spring 17 and can produce elastic limitation on the second spring 17, forcing the fixing strip 16 to fit and engage with the second spring 17, thereby limiting the movement of the movable plate 18 and the adapter plate 19.

[0043] Working principle:

[0044] When the device is in use, it is divided into the following concentrated situations:

[0045] Case 1: The area of ​​the empty slot 6 is larger than the decompression bed and is offset from the position of the empty slot 6. Hold the pull plate 8 and pull the limit column 7, the block 9 and the dynamic friction ring 12 upward to compress the spring 14 and disengage the dynamic friction ring 12 from the contact with the static friction ring 11. At this time, the block 9 can be rotated and the limit column 7 and the block 9 can drive the slot 10 to rotate so that the empty slot 6 moves to the position corresponding to the decompression window. In this way, after the device is put on, the decompression window corresponds to the empty slot 6 and avoids the physical position of the inner wall of the liner 5. After the liner 5 completes the rotation operation, put down the pull plate 8 so that the limit column 7 and the dynamic friction ring 12 are reset under the action of the spring 14 and contact with the static friction ring 11 to generate friction, and the position of the liner 5 is fixed.

[0046] Case 2: The area of ​​the empty slot 6 is smaller than the area of ​​the decompression window. At this time, measure the area of ​​the decompression window, then put your finger into the side slot 20, and bend the adapter plate 19 and the movable plate 18 toward one side of the spring 2 17, so that the movable plate 18 is equidistant from the fixed strip 16, and the fixed strip 16 is relatively separated from the fixed slot 21, and the spring 2 17 is squeezed and deformed. At this time, the user can drive the adapter plate 19 and the movable plate 18 to rotate along the inner wall of the fixed strip 16 around the axis of the housing 1, and the spring 2 17 and the adapter plate 19 can move toward The side groove 20 is then released to reset the movable plate 18 under the action of the spring 17 and abut against the inner wall of the placement groove 15 again. The fixing strip 16 is again relatively engaged in the fixing groove 21 to limit the movable plate 18 from sliding back and forth along the inner wall of the placement groove 15 around the axis of the housing 1. At this time, the solid part of the inner wall of the liner 5 and the inner wall of the adapter plate 19 abut against the patient's head and are perfectly interlaced with the decompression window.

[0047] After the device is put on, it is fixed by locking the fixing belt 2. At this time, the inner wall of the adapter plate 19 and the inner wall of the inner liner 5 located near the decompression window abut against the patient's scalp around the decompression window, making the device more tightly worn.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A decompression window protection device for post-skull craniotomy surgery, comprising a shell (1), a fixing belt (2) fixedly connected to the bottom of the shell (1), a base (4) fixedly mounted on the bottom of the inner wall of the shell (1), an inner liner (5) rotatably mounted between the top of the base (4) and the inner wall of the shell (1), characterized in that: The inner wall of the inner liner (5) is provided with an empty groove (6), the top of the inner liner (5) is provided with a clamping groove (10), the top of the outer shell (1) is fixedly mounted with a fixing cylinder (3), the top of the fixing cylinder (3) is movably sleeved with a limiting column (7), one end of the limiting column (7) is fixedly connected with a pull plate (8), the other end of the limiting column (7) is fixedly connected with a clamping block (9), the clamping block (9) is adapted to be clamped in the clamping groove (10), the top of the inner wall of the outer shell (1) is fixedly mounted with a static friction ring (11), the outer surface of the limiting column (7) is movably sleeved with a limiting ring (13) and a spring (14), and a dynamic friction ring (12) located below the spring (14) is fixedly mounted, the dynamic friction ring (12) is in contact with the static friction ring (11), the contact surfaces of the static friction ring (11) and the dynamic friction ring (12) are made of a material with a high friction coefficient, and the limiting ring (13) is located on the fixed surface. The top of the inner wall of the fixed cylinder (3), the two ends of the spring 1 (14) are elastically connected to the limit ring (13) and the dynamic friction ring (12), respectively, the contact surface of the static friction ring (11) and the dynamic friction ring (12) generates an extrusion force through the spring 1 (14), and when the pull plate (8) and the limit column (7) move upward, they drive the dynamic friction ring (12) to move upward and compress the spring 1 (14), and at the same time, the dynamic friction ring (12) and the static friction ring (11) are separated from contact, and the pull plate (8) drives the inner liner (5) to rotate to a position corresponding to the empty slot (6) and the pressure relief window, and provides a buffer protection function for the pressure relief window gap by opening the empty slot (6). The pull plate (8) is released, so that the dynamic friction ring (12), the limit column (7) and the clamping block (9) are reset under the action of the spring 1 (14), so that the static friction ring (11) and the dynamic friction ring (12) are re-contacted and generate friction force, and the inner liner (5) is restricted in the rotation position by the cooperation of the clamping block (9).

2. The device for protecting a decompression window after cranial craniectomy according to claim 1, characterized in that: The front and rear sides of the inner wall of the hollow groove (6) are provided with placement grooves (15); a spring 2 (17) is fixedly mounted on one side of the inner wall of the placement groove (15); a plurality of sets of fixing strips (16) are fixedly mounted on the other side of the inner wall of the placement groove (15); a movable plate (18) is movably connected to the inner wall of the placement groove (15); an adapter plate (19) is fixedly mounted on the outer side of the movable plate (18); and the adapter plate (19) rotates around the axis of the outer shell (1) along the inner wall of the hollow groove (6).

3. The device for protecting a decompression window after cranial craniectomy according to claim 2, characterized in that: A side groove (20) is provided on one side of the adapter plate (19), and the inner wall of the adapter plate (19) is kept flush with the inner wall of the inner container (5).

4. The device for protecting a decompression window after cranial craniectomy according to claim 3, characterized in that: The outer surface of the clamping block (9) is provided with a plurality of groups of protrusions, and is adapted to be clamped with the inner wall of the clamping slot (10), so that the clamping block (9) can move up and down along the axis of the clamping slot (10), while driving the clamping slot (10) to rotate.

5. The device for protecting a decompression window after cranial craniectomy according to claim 4, characterized in that: An arc-shaped groove is provided on the outer surface of the pull plate (8), and a gap is left between the bottom of the pull plate (8) and the top of the fixing cylinder (3).

6. The device for protecting a decompression window after cranial craniectomy according to claim 5, characterized in that: The contact surfaces of the static friction ring (11) and the dynamic friction ring (12) are made of carbon fiber composite material.

7. The device for protecting a decompression window after cranial craniectomy according to claim 6, characterized in that: The outer side surface of the movable plate (18) is provided with a plurality of groups of fixing grooves (21), the fixing strips (16) are adapted to be snap-fitted into the fixing grooves (21), and the number of the fixing strips (16) and the fixing grooves (21) are the same.

8. The device for protecting a decompression window after cranial craniectomy according to claim 7, characterized in that: The second spring (17) is overall in a "U" shape and is engaged with the inner wall of the placement groove (15), and is in contact with the inner annular surface of the movable plate (18).

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