A neurosurgical cerebral periosteal elevator

Abstract

The present invention provides a neurosurgery periosteum stripper, belonging to the technical field of medical devices. It comprises a handle, both ends of the handle are fixedly connected with connecting rods, and the end of the connecting rod away from the handle is provided with a stripping mechanism, and the sizes of the two groups of stripping mechanisms are different. The surface of the connecting rod is provided with an annular groove, and the inside of the annular groove is surrounded by an air bag; a ventilation mechanism is provided on the handle, and the air supply end of the ventilation mechanism is connected to the air port of the air bag, and the ventilation mechanism can deliver gas to the inside of the air bag or extract the gas inside the air bag. The present invention sets the air bag and the ventilation mechanism for use. Before stripping the periosteum, the user first cuts the skin of the surgical site of the patient, inserts the stripping mechanism into the surgical site through the incision, and uses the ventilation mechanism to inflate the inside of the air bag. The air bag expands to open the soft tissue at the incision, so that the bone leaks out, so that the stripping mechanism can strip the periosteum.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a cerebral periosteal elevator for neurosurgery. Background Art

[0002] A periosteal elevator, also known as a periosteal dissector, is a commonly used medical instrument. The periosteum belongs to connective tissue, which surrounds the bone shaft, and muscles are attached to the bone shaft through the periosteum. Orthopedic surgeries are basically carried out on the bone surface. Only by peeling off the periosteum attached to the bone surface can the surgical site be exposed. In brain surgeries, such as meningioma and skull lesion surgeries, the periosteum needs to be peeled off from the surface of the skull to expose the surgical field. The cerebral periosteal elevator is mainly used to peel off the periosteum during brain surgeries. Using a cerebral periosteal elevator can peel off the periosteum more precisely, reduce damage to brain tissue, and improve the safety and effectiveness of the surgery.

[0003] The existing periosteal elevator has a simple structure and is usually composed of a handle and a blade. The blade of the periosteal elevator is usually flat or curved in shape and has a sharp cutting edge, which can easily cut and peel off the periosteum. Periosteal elevators come in different models and sizes and can be selected according to different needs;

[0004] When the existing periosteal elevator cuts the periosteum, it is necessary to first move the soft tissue at the surgical site to expose the bone part to be treated, and then insert the periosteal dissector under the periosteum and peel it along the bone surface. Therefore, during the periosteum peeling process, the doctor needs to keep pulling up the soft tissue, which will increase the doctor's physical consumption during the surgery, affect the surgical safety, and is inconvenient for the doctor to operate. For this reason, a cerebral periosteal elevator for neurosurgery is proposed. Summary of the Invention

[0005] Aiming at the problem that when the existing periosteal elevator cuts the periosteum, it is necessary to first move the soft tissue at the surgical site to expose the bone part to be treated. Therefore, the doctor needs to keep pulling up the soft tissue, which will increase the doctor's physical consumption during the surgery and affect the surgical safety, the purpose of the present invention is to provide a cerebral periosteal elevator for neurosurgery.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A cerebral periosteal elevator for neurosurgery, including a handle, both ends of the handle are fixedly connected with connecting rods, and at the ends of the connecting rods away from the handle, peeling mechanisms are provided. The sizes of the two peeling mechanisms are different. Annular grooves are formed on the surfaces of the connecting rods, and air bags are connected around the annular grooves;

[0008] The handle is provided with a ventilation mechanism, the air supply end of which is connected to the air port of the airbag. The ventilation mechanism can supply gas into the airbag or extract the gas from the airbag. When the airbag is inflated, the soft tissue at the surgical site can be expanded to allow the bone to leak out.

[0009] Optionally, the ventilation mechanism includes a connecting tube and a telescopic bag, the handle is thin in the middle and thick at both ends, and two groups of the connecting tube and the telescopic bag are provided. The two groups of telescopic bags are arranged on both sides of the middle part of the handle, and the telescopic bags and the airbags on the same side are connected through the connecting tube. A magnetic ring is arranged in the middle part of the handle, and the magnetic ring is located between the two groups of telescopic bags. U-shaped plates are fixedly connected to both sides of the outer surface of the magnetic ring, and an electromagnet is fixedly embedded inside the handle.

[0010] Optionally, a return spring is arranged inside the telescopic bag, and the return spring is sleeved on the outer surface of the middle part of the handle, one end of the return spring abuts against the end of the handle, and the other end of the return spring abuts against the end of the U-shaped plate.

[0011] Optionally, the connecting rod and the handle are both provided with preset grooves, and the connecting tube is fixedly embedded in the preset grooves.

[0012] Optionally, an annular groove is provided inside the connecting rod, and the side of the annular groove close to the annular groove is set to be an opening, an adjustment cover is provided inside the annular groove, an electric push rod is fixedly installed inside the annular groove, the telescopic end of the electric push rod is fixedly connected to the adjustment cover, and the electric push rod can drive the adjustment cover to move to the surface of the airbag.

[0013] Optionally, the telescopic direction of the electric push rod is parallel to the axes of the annular groove and the annular slide groove.

[0014] Optionally, the interior of the connecting rod is configured to be hollow, and one end of the connecting rod away from the handle is configured to be open, and the stripping mechanism can be accommodated inside the connecting rod.

[0015] Optionally, the peeling mechanism includes a blade, a connecting head, a round rod, a telescopic spring and a push plate. The size of the blade is smaller than the inner diameter of the connecting rod. One end of the connecting head is fixedly connected to the blade, and the other end of the connecting head is fixedly connected to the round rod. The other end of the round rod extends to one side of the handle and is provided with a control end, which is used to adjust the position of the blade.

[0016] Optionally, the control end includes a push plate sleeved on the outer surface of the handle, the push plate is arranged in an annular shape, a cross plate is fixedly connected to the inside of the push plate, a through groove matched with the cross plate is opened on the surface of the handle, the cross plate is installed in cooperation with the inside of the through groove, one end of the round rod passes through the side wall of the handle to the inside of the through groove, and the round rod is fixedly connected to the cross plate, a limit rod is inserted in the radial direction of the outer surface of the push plate, a limit groove matched with the limit rod is opened on the surface of the handle, when the limit rod is inserted in the limit groove, the blade is located outside the connecting rod, a positioning spring is sleeved on the surface of the limit rod, one end of the positioning spring is fixedly connected to the end of the limit rod, and the other end of the positioning spring is fixedly connected to the outer surface of the push plate.

[0017] Optionally, a telescopic spring is sleeved on the surface of the round rod, one end of the telescopic spring is fixedly connected to the inner surface of the connecting rod, and the other end of the telescopic spring is fixedly connected to the connecting head. When the telescopic spring is in a natural state, the blade is located inside the connecting rod.

[0018] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects:

[0019] In the above scheme, by setting up an air bag and a ventilation mechanism for use in conjunction, before peeling the periosteum, the user first cuts the skin of the patient's surgical site, inserts the peeling mechanism into the surgical site through the incision, and uses the ventilation mechanism to inflate the air bag. The air bag expands to open the soft tissue at the incision, thereby allowing the bone to leak out, so that the peeling mechanism can peel the periosteum. Therefore, the doctor does not need to open the soft tissue for a long time, which reduces the doctor's physical exertion and facilitates the doctor's operation.

[0020] By setting the electric push rod and the adjustment cover to cooperate with each other, when the periosteal stripper is not in use, the electric push rod is driven to extend, so that the adjustment cover moves to the surface of the airbag, ensuring that when the periosteal stripper is stored together with other surgical tools, the airbag will not be damaged by other equipment, thereby protecting the airbag;

[0021] The inside of the connecting rod is set to be hollow, and the end of the connecting rod away from the handle is set to be open, so that the blade can be stored in the connecting rod, so that the blade can be protected when the periosteal stripper is not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 Cross-sectional structure schematic diagram of the present invention Figure 1 ;

[0025] Figure 3 Local structure schematic diagram of the present invention Figure 2 ;

[0026] Figure 4 Local structure schematic diagram of the handle in the present invention Figure 2 ;

[0027] Figure 5 Enlarged view of part A in the present invention Figure 2 ;

[0028] Figure 6 Enlarged view of part B in the present invention Figure 3 ;

[0029] Figure 7 Schematic diagram of the structures such as the push plate, round rod and limit rod of the present invention

[0030] [Reference numerals]

[0031] 1. Handle; 2. Connecting rod;

[0032] 3. Stripping mechanism; 31. Blade; 32. Connector; 33. Round rod; 34. Telescopic spring; 35. Push plate; 36. Limit rod; 37. Positioning spring; 38. Limit groove; 39. Through groove

[0033] 4. Airbag;

[0034] 5. Ventilation mechanism; 51. Connecting pipe; 52. Telescopic bladder; 53. Return spring; 54. U-shaped plate; 55. Electromagnet; 56. Magnetic ring

[0035] 6. Electric push rod; 7. Adjusting cover; 8. Slide groove

[0036] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs Detailed implementation manners

[0037] The following describes in detail a cranial periosteum stripper for neurosurgery provided by the present invention with reference to the accompanying drawings and specific embodiments. It should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention

[0038] It should be noted that in the specification, the mention of "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicates that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. Additionally, when combining embodiments to describe a specific feature, structure or characteristic, implementing such feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0039] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that may not be explicitly described.

[0040] It can be understood that the meanings of "on...", "above...", and "over..." in the present invention should be interpreted in the broadest manner such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0041] Furthermore, spatial relative terms such as "under...", "below...", "lower", "above...", "upper", etc. can be used in this document for convenience of description to describe the relationship between one element or feature and another or more elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptive words used herein can be correspondingly interpreted similarly.

[0042] As Figures 1 to 7 shown, an embodiment of the present invention provides a neurosurgical cerebral periosteum stripper, including a handle 1, both ends of the handle 1 are fixedly connected with connecting rods 2, and stripping mechanisms 3 are arranged at the ends of the connecting rods 2 far away from the handle 1. The sizes of the two groups of stripping mechanisms 3 are different, annular grooves are formed on the surfaces of the connecting rods 2, and air bags 4 are connected around the annular grooves.

[0043] The handle 1 is provided with a ventilation mechanism 5, the air supply end of the ventilation mechanism 5 is connected to the air port of the airbag 4, the ventilation mechanism 5 can supply gas to the inside of the airbag 4 or extract the gas inside the airbag 4, and when the airbag 4 is expanded, the soft tissue of the surgical site can be expanded to allow the bone to leak out.

[0044] The handle 1, the connecting rod 2 and the stripping mechanism 3 are all made of stainless steel or other corrosion-resistant materials, and are suitable for long-term use in a medical environment. In addition, a rubber soft cover can be provided on the surface of the handle 1 to provide a more comfortable grip.

[0045] By setting up the airbag 4 for use with the ventilation mechanism 5, the user first cuts the skin of the patient's surgical site before peeling the periosteum, inserts the peeling mechanism 3 into the surgical site through the incision, and uses the ventilation mechanism 5 to inflate the airbag 4. The expansion of the airbag 4 can expand the soft tissue at the incision, thereby allowing the bone to leak out, making it easier for the peeling mechanism 3 to peel the periosteum. Therefore, the doctor does not need to expand the soft tissue for a long time, reducing the doctor's physical exertion.

[0046] The shapes and sizes of the two sets of stripping mechanisms 3 can be set according to the requirements of the periosteal surgery.

[0047] The ventilation mechanism 5 includes a connecting tube 51 and a telescopic bag 52. The handle 1 is thin in the middle and thick at both ends. There are two groups of connecting tubes 51 and telescopic bags 52. The two groups of telescopic bags 52 are sleeved on both sides of the middle part of the handle 1. The telescopic bags 52 and the airbag 4 on the same side are connected through the connecting tube 51. A magnetic ring 56 is sleeved in the middle part of the handle 1. The magnetic ring 56 is located between the two groups of telescopic bags 52. U-shaped plates 54 are fixedly connected to both sides of the outer surface of the magnetic ring 56. An electromagnet 55 is fixedly embedded inside the handle 1.

[0048] A return spring 53 is disposed inside the telescopic bag 52 . The return spring 53 is sleeved on the outer surface of the middle part of the handle 1 . One end of the return spring 53 abuts against the end of the handle 1 , and the other end of the return spring 53 abuts against the end of the U-shaped plate 54 .

[0049] The connection rod 2 and the handle 1 are both provided with preset grooves, and the connection pipe 51 is fixedly embedded in the preset grooves.

[0050] The specific operation of the ventilation mechanism 5 to inflate the airbag 4 is as follows: the user holds the U-shaped plate 54 and moves the U-shaped plate 54 and the magnetic ring 56 to the side of the peeling mechanism 3 in use, and the U-shaped plate 54 and the magnetic ring 56 can press the telescopic bag 52 corresponding to the peeling mechanism 3, and the gas inside the telescopic bag 52 can be transported to the inside of the airbag 4 through the connecting tube 51, so that the airbag 4 expands, thereby expanding the soft tissue of the surgical site. In addition, by setting the electromagnet 55 and the magnetic ring 56 for use in conjunction, a corresponding battery assembly can be set on the surface of the handle 1 to provide power for the electromagnet 55. In addition, A button is also required to be provided on the surface of the handle 1. By pressing the button, the power of the electromagnet 55 can be turned on, and the electromagnet 55 can absorb the magnetic ring 56 to fix the magnetic ring 56 and the U-shaped plate 54, so that the telescopic bag 52 remains compressed and the airbag 4 remains expanded, thereby maintaining support for the soft tissue; in addition, by providing a reset spring 53, when the telescopic bag 52 is compressed, the reset spring 53 is compressed at the same time. After use, the button is pressed again to switch the power of the electromagnet 55, so that the electromagnet 55 no longer absorbs the magnetic ring 56, and the compressed reset spring 53 is reset, driving the telescopic bag 52 and the airbag 4 to reset.

[0051] An annular slide groove 8 is provided inside the connecting rod 2, and the side of the annular slide groove 8 close to the annular groove is set to be open. An adjustment cover 7 is provided inside the annular slide groove 8. An electric push rod 6 is fixedly installed inside the annular slide groove 8. The telescopic end of the electric push rod 6 is fixedly connected to the adjustment cover 7. The electric push rod 6 can drive the adjustment cover 7 to move to the surface of the airbag 4.

[0052] The telescopic direction of the electric push rod 6 is parallel to the axis of the annular groove and the annular slide groove 8 .

[0053] By setting the electric push rod 6 and the adjustment cover 7 for use together, when the periosteal stripper is not in use, the electric push rod 6 is driven to extend to move the adjustment cover 7 to the surface of the airbag 4, ensuring that when the periosteal stripper is stored together with other surgical instruments, the airbag 4 will not be damaged by other equipment, thereby protecting the airbag 4.

[0054] It should be noted that the electric push rod 6 can be used in conjunction with a controller. The controller can control when the electric push rod 6 is extended and the length of the extension. The switch button of the controller can be set on the surface of the handle 1. Pressing the button can control the movement of the electric push rod 6. The controller can select a single-chip microcomputer as a control. The single-chip microcomputer is composed of an arithmetic unit, a memory, an input and output device, etc., which is equivalent to a microcomputer. Compared with the general-purpose microprocessor used in personal computers, it emphasizes self-supply and cost saving. Its biggest advantage is that it is small in size and can be placed inside the instrument, but it has a small storage capacity, a simple input and output interface, and low functional consumption. There is no requirement for the model of the single-chip microcomputer.

[0055] The inside of the connecting rod 2 is hollow, and one end of the connecting rod 2 away from the handle 1 is open, and the peeling mechanism 3 can be accommodated inside the connecting rod 2.

[0056] The peeling mechanism 3 includes a blade 31, a connecting head 32, a round rod 33, a telescopic spring 34 and a push plate 35. The size of the blade 31 is smaller than the inner diameter of the connecting rod 2. One end of the connecting head 32 is fixedly connected to the blade 31, the other end of the connecting head 32 is fixedly connected to the round rod 33, the other end of the round rod 33 extends to one side of the handle 1 and is provided with a control end, and the control end is used to adjust the position of the blade 31.

[0057] The control end includes a push plate 35 sleeved on the outer surface of the handle 1. The push plate 35 is annular. A cross plate is fixedly connected inside the push plate 35. A through groove 39 adapted to the cross plate is formed on the surface of the handle 1. The cross plate is fitted and installed inside the through groove 39. One end of the round rod 33 penetrates through the side wall of the handle 1 to the inside of the through groove 39, and the round rod 33 is fixedly connected to the cross plate. A limiting rod 36 is inserted radially along the outer surface of the push plate 35. A limiting groove 38 adapted to the limiting rod 36 is formed on the surface of the handle 1. When the limiting rod 36 is inserted into the limiting groove 38, the blade 31 is located outside the connecting rod 2. A positioning spring 37 is sleeved on the surface of the limiting rod 36. One end of the positioning spring 37 is fixedly connected to the end of the limiting rod 36, and the other end of the positioning spring 37 is fixedly connected to the outer surface of the push plate 35.

[0058] A telescopic spring 34 is sleeved on the surface of the round rod 33. One end of the telescopic spring 34 is fixedly connected to the inner surface of the connecting rod 2, and the other end of the telescopic spring 34 is fixedly connected to the connecting head 32. When the telescopic spring 34 is in a natural state, the blade 31 is located inside the connecting rod 2.

[0059] When the skull periosteal elevator is not in use, the blade 31 can be moved into the inside of the connecting rod 2 for storage, so as to protect the blade 31. When in use, the blade 31 is moved out from the inside of the connecting rod 2, and the position of the blade 31 is fixed. Specifically, the user moves the push plate 35, thereby driving the cross plate, the round rod 33, the connecting head 32 and the blade 31 to move. When the blade 31 completely moves out from the inside of the connecting rod 2 and aligns the limiting rod 36 with the limiting groove 38, the limiting rod 36 is inserted into the inside of the limiting groove 38, and the positions of the blade 31, the connecting head 32, the round rod 33 and the push plate 35 can be fixed. During this process, the telescopic spring 34 on the outer surface of the round rod 33 is stretched. After use, the limiting rod 36 is pulled out from the limiting groove 38, and the stretched telescopic spring 34 resets, thereby driving the blade 31, the connecting head 32, the round rod 33 and the push plate 35 to reset, and the blade 31 thus moves into the inside of the connecting rod 2, so that the blade 31 can be stored. By arranging the positioning spring 37, the positioning spring 37 can press the limiting rod 36 against the inside of the limiting groove 38, so that the limiting rod 36 is stably inserted into the inside of the limiting groove 38, thereby ensuring the stability of the blade 31 during use.

[0060] The present invention covers any alternatives, modifications, equivalent methods and solutions made on the essence and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0061] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A neurosurgical cerebral periosteum dissector, comprising a handle, characterized in that, Both ends of the handle are fixedly connected to a connecting rod, and one end of the connecting rod away from the handle is provided with a peeling mechanism, and the two sets of peeling mechanisms have different sizes. The surface of the connecting rod is provided with an annular groove, and the inside of the annular groove is surrounded by an air bag; The handle is provided with a ventilation mechanism, the air delivery end of which is connected to the air port of the airbag, and the ventilation mechanism can deliver gas into the airbag or extract gas from the airbag. When the airbag is inflated, the soft tissue at the surgical site can be expanded to allow the bone to leak out. The ventilation mechanism includes a connecting tube and a telescopic bag. The handle is thin in the middle and thick at both ends. There are two groups of connecting tubes and telescopic bags. The two groups of telescopic bags are arranged on both sides of the middle part of the handle. The telescopic bags and airbags on the same side are connected through the connecting tube. A magnetic ring is arranged in the middle part of the handle, and the magnetic ring is located between the two groups of telescopic bags. U-shaped plates are fixedly connected to both sides of the outer surface of the magnetic ring, and an electromagnet is fixedly embedded inside the handle.

2. The neurosurgical cerebral periosteal elevator according to claim 1, wherein A return spring is arranged inside the telescopic bag, and the return spring is sleeved on the outer surface of the middle part of the handle. One end of the return spring abuts against the end of the handle, and the other end of the return spring abuts against the end of the U-shaped plate.

3. The cerebral periosteum dissector for neurosurgery according to claim 2, characterized in that, The connecting rod and the handle are both provided with preset grooves, and the connecting pipe is fixedly embedded in the preset grooves.

4. The cerebral dura mater dissector for neurosurgery according to claim 3, characterized in that, An annular slide groove is provided inside the connecting rod, and a side of the annular slide groove close to the annular groove is set as an opening. An adjustment cover is provided inside the annular slide groove. An electric push rod is fixedly installed inside the annular slide groove. The telescopic end of the electric push rod is fixedly connected to the adjustment cover, and the electric push rod can drive the adjustment cover to move to the surface of the airbag.

5. The cerebral periosteum dissector for neurosurgery according to claim 4, characterized in that, The telescopic direction of the electric push rod is parallel to the axis of the annular groove and the annular slide groove.

6. The cerebral periosteum dissector for neurosurgery according to claim 1, wherein The interior of the connecting rod is configured to be hollow, and the end of the connecting rod away from the handle is configured to be open, and the stripping mechanism can be accommodated inside the connecting rod.

7. The cerebral periosteum dissector for neurosurgery according to claim 6, characterized in that The peeling mechanisms include a blade, a connecting head, a round rod, a telescopic spring and a push plate. The size of the blade is smaller than the inner diameter of the connecting rod. One end of the connecting head is fixedly connected to the blade, and the other end of the connecting head is fixedly connected to the round rod. The other end of the round rod extends to one side of the handle and is provided with a control end, which is used to adjust the position of the blade.

8. The cerebral periosteum dissector for neurosurgery according to claim 7, characterized in that, The control end includes a push plate sleeved on the outer surface of the handle, the push plate is arranged in a ring shape, a cross plate is fixedly connected inside the push plate, a through groove matched with the cross plate is opened on the surface of the handle, the cross plate is installed in cooperation inside the through groove, one end of the round rod passes through the side wall of the handle to the inside of the through groove, and the round rod is fixedly connected to the cross plate, a limit rod is inserted in the radial direction of the outer surface of the push plate, a limit groove matched with the limit rod is opened on the surface of the handle, when the limit rod is inserted in the limit groove, the blade is located outside the connecting rod, a positioning spring is sleeved on the surface of the limit rod, one end of the positioning spring is fixedly connected to the end of the limit rod, and the other end of the positioning spring is fixedly connected to the outer surface of the push plate.

9. The neurosurgical cerebral periosteal elevator according to claim 8, characterized in that, A telescopic spring is sleeved on the surface of the round rod. One end of the telescopic spring is fixedly connected to the inner surface of the connecting rod, and the other end of the telescopic spring is fixedly connected to the connecting head. When the telescopic spring is in its natural state, the blade is located inside the connecting rod.

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