CN113598872B

CN113598872B - Skull slotting tool

Info

Publication number: CN113598872B
Application number: CN202111031932.9A
Authority: CN
Inventors: 姜传江; 章海涛; 吴国良
Original assignee: Sceneray Co Ltd
Current assignee: Jingyu Medical Technology Suzhou Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2023-06-09
Anticipated expiration: 2041-09-03
Also published as: CN113598872A; WO2023029918A1

Abstract

The invention belongs to the technical field of medical instruments, and discloses a skull slotting tool, which comprises a cutter for cutting a skull, a base, a fixing part and a profiling groove, wherein the fixing part is arranged on the base, the fixing part can be connected with the skull and fix the base to the skull, the profiling groove is arranged on the base, the profiling groove extends along a preset path, the cutter can extend into the profiling groove and is abutted with the skull exposed out of the profiling groove, and the profiling groove can guide the cutter extending into the profiling groove to cut the skull along the preset path. According to the invention, the fixing part and the imitation groove are arranged on the base, so that the fixing part can fix the base, the cutter can extend into the imitation groove and be abutted against the skull, and the imitation groove can guide the cutter extending into the imitation groove to cut the skull along the preset direction, so that the incision is smooth, the incision size can be strictly controlled, the operation time is shortened, the operation efficiency is improved, and the operation risk is reduced.

Description

Skull slotting tool

Technical Field

The invention relates to the technical field of medical instruments, in particular to a skull slotting tool.

Background

Implantable neurostimulators are a method of modulating or restoring brain, nerve or muscle function by stimulating a target nerve with a degree of current pulses to provide relief.

In the implantation process of the nerve stimulator of the brain, a groove needs to be formed in the skull to be capable of placing the nerve stimulator in the brain, in the existing craniotomy process, a doctor usually firstly manually marks a line on the skull, firstly manually drills holes along the outline, then uses a cutter to cut a part between two adjacent holes, so that a groove with a very precise shape is cut, and because the surface of a cut after drilling is rough, the cut area can be too small or too large, and when the cut is too small, an additional tool is needed to expand the cut; when the incision is too large, the gap between the pulse generator and the incision is too large, which is unfavorable for fixing and sealing the pulse generator, thereby increasing the operation time and increasing the operation risk.

Accordingly, there is a need to provide a craniotomy tool that addresses the above-described problems.

Disclosure of Invention

The invention aims to provide a skull slotting tool which solves the problems that during the skull slotting process, the incision surface is rough and the incision contour is not matched.

To achieve the purpose, the invention adopts the following technical scheme:

a skull grooving tool comprising a tool for cutting a skull, the skull grooving tool further comprising:

a base;

the fixing part is arranged on the base, can be connected to the skull and is used for fixing the base to the skull; a kind of electronic device with high-pressure air-conditioning system

The profiling groove is arranged on the base, the profiling groove extends along a preset path, the cutter can extend into the profiling groove and is abutted against the skull which is exposed out of the profiling groove, and the profiling groove can guide the cutter which extends into the profiling groove to cut the skull along the preset path.

Preferably, the base includes:

the inner ring body is arranged in the inner ring of the outer ring body, and the outer side wall of the inner ring body is opposite to the inner side wall of the outer ring body so as to form the profiling groove; a kind of electronic device with high-pressure air-conditioning system

The connecting body, interior ring body and outer ring body all connect in the connecting body.

Preferably, the fixing portion is provided on the outer ring body.

Preferably, the fixing portion is provided on the inner ring body.

Preferably, the connector includes a first connecting portion, and the first connecting portion is disposed in the profiling groove.

Preferably, the connector further comprises a second connecting part, the second connecting part is arranged on the inner ring body, and the second connecting part can be communicated with the inner side surface of the inner ring body.

Preferably, the second connecting portion is provided with a preformed hole, and the preformed hole can expose part of the skull.

Preferably, the end faces of the base, which are opposite to and away from the skull, are arc-shaped and extend along a first direction, and the first direction is the width direction of the skull.

Preferably, the fixing portion includes:

the fixed hole groups are oppositely arranged on the outer ring body, and one fixed hole group comprises two fixed holes which are arranged at intervals;

the four mounting holes are respectively arranged at the bottoms of the four fixing holes and extend to one surface of the base opposite to the skull;

the four pins are respectively arranged in the four fixing holes, the pins can penetrate through and extend out of the mounting holes, and the parts, extending out of the mounting holes, of the pins are provided with threads and can be abutted against the skull.

Preferably, a boss is arranged at a part, facing one surface of the skull, of the base, which is located at the edge of the mounting hole, and four bosses can be abutted to the skull, and the mounting hole extends to an end surface where the boss is abutted to the skull.

Preferably, the base comprises four connectors, and the four connectors are all arranged in the profiling groove and are respectively close to the four fixing holes.

Preferably, the pin is made of titanium alloy.

Preferably, the preset path is quadrilateral or circular, and the vertex angle of the quadrilateral is transited by an arc.

Preferably, the cutter is an ultrasonic osteotome.

The invention has the beneficial effects that: through setting up fixed part and imitative groove on the base, make the fixed part can fix the base, make the cutter can stretch into imitative inslot and with skull butt to imitative groove can guide the cutter that stretches into in the imitative groove along predetermineeing the direction cutting skull, make the incision smooth, and can strictly control the size of incision, make incision profile and pulser's installation size match, shortened operation time, improved the efficiency of operation, and reduced the operation risk.

Drawings

FIG. 1 is a schematic illustration of a skull grooving tool according to an embodiment of the present invention;

FIG. 2 is a front view of the craniotomy tool of FIG. 1;

FIG. 3 is a left side view of the craniotomy tool of FIG. 1;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a cross-sectional view B-B of FIG. 3;

FIG. 6 is a cross-sectional view of C-C of FIG. 5;

FIG. 7 is a schematic illustration of a skull grooving tool with the knife removed according to the second embodiment of the present invention;

FIG. 8 is a top view of FIG. 7;

fig. 9 is a sectional view of D-D in fig. 8.

In the figure:

1. a cutter;

2. a base; 21. an inner ring body; 22. an outer ring body; 23. a connecting body; 231. a first connection portion; 232. a second connecting portion; 2321. a preformed hole;

3. a simulated groove;

4. a fixing part; 41. a fixing hole; 42. a mounting hole; 43. a pin; 44. a boss.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Example 1

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

In the prior art, during the placement of the pulse generator in the brain, a first incision is made in the skull, and most doctors manually score the skull by manually scribing the skull, then manually drilling holes along the contour, and then cutting the portion between two adjacent holes with a cutter, thereby cutting an approximately shaped incision. Because the surface of the cut after drilling is rough, and the area of the cut can be too small or too large, an additional tool is needed to expand the cut when the cut is too small; when the incision is too large, the gap between the pulse generator and the incision is too large, which is unfavorable for fixing and sealing the pulse generator, so that the operation time is prolonged, and the operation risk is increased.

In order to solve the above-mentioned problems, the present embodiment provides a skull grooving tool, which, as shown in fig. 1 to 6, includes a tool 1 for cutting a skull, a base 2, a profiling groove 3, and a fixing portion 4, the profiling groove 3 is provided on the base 2, the profiling groove 3 extends along a predetermined path, the predetermined path being related to the installation size of a pulse generator. In particular, the preset path is related to the profile of the pulse generator, the installation gap, and the reserved installation location. The tool 1 is capable of extending into the profiling groove 3 and of abutting against the skull in which the profiling groove 3 is exposed, the profiling groove 3 defining the tool 1 such that the tool 1 can cut the skull along a predetermined path of the profiling groove 3. The fixing part 4 is arranged on the base 2, the fixing part 4 can be connected to the skull, and the base 2 is fixed on the skull, so that the cutter 1 can be prevented from driving the base 2 to move in the cutting process.

Further, in the present embodiment, the base 2 includes an inner ring 21, an outer ring 22 and a connecting body 23, the inner ring 21 is disposed in an inner ring of the outer ring 22, and an outer side wall of the inner ring 21 and an inner side wall of the outer ring 22 are disposed opposite to each other to form the imitated groove 3, the inner ring 21 and the outer ring 22 are connected to the connecting body 23, and a part of the skull can be exposed from an inner ring of the inner ring 21, so that a notch can be observed in a cutting process.

Further, in order to reduce the volume of the base 2 and firmly connect the inner ring 21 and the outer ring 22, in this embodiment, the connecting body 23 is disposed in the groove 3, the outer sidewall of the inner ring 21 and the inner sidewall of the outer ring 22 are both connected to the connecting body 23, and the fixing portion 4 is disposed on the outer ring 22 and is close to the connecting body 23, so as to enhance the connection strength between the inner ring 21 and the fixing portion 4, and prevent the tool 1 from deforming the inner ring 21 when abutting against the inner ring 21.

Because the skull has certain radian in its width direction, in order to be convenient for doctor to judge the incision depth of cutter 1, preferably, the base 2 is relative and the terminal surface that deviates from with the skull all is arc extension along first direction, and first direction is the width direction of skull for the base 2 can be roughly laminated with the skull with the one side that the skull contacted, and doctor can be according to the length that the handle of a knife of cutter 1 exposes the part of base 2 judgement cutter 1, thereby the operation of doctor of being convenient for has improved the efficiency of craniotomy.

Specifically, in this embodiment, the preset path is a quadrilateral, each of four vertex angles of the quadrilateral is in arc transition, the fixing portion 4 includes a pair of fixing hole groups, four mounting holes 42 and four pins 43, each fixing hole group includes two fixing holes 41, the two fixing holes 41 are arranged at intervals, the two fixing hole groups are respectively arranged on a pair of sides of the outer ring 22, which are longer, and the pair of fixing hole groups are arranged oppositely, so that the four fixing holes 41 are arranged pairwise and pairwise. The four mounting holes 42 are respectively arranged at bottoms of the four fixing holes 41, the mounting holes 42 extend to the face of the base 2 opposite to the skull, the four pins 43 are respectively arranged in the four fixing holes 41, the pins 43 can pass through and extend out of the mounting holes 42, the parts of the pins 43 extending out of the mounting holes 42 are provided with threads and can be abutted against the skull, when in use, a doctor can obtain four points according to the positions of the cuts, and the four pins 43 positioned in the four fixing holes 41 are respectively nailed into the four points, so that the four pins 43 press and fix the outer ring 22 on the skull, thereby fixing the base 2, and the pins 43 are preferably made of titanium alloy.

After the skull of the head is cut, the pulse generator needs to be fixed on the remaining skull of the head of the patient, since four positioning holes are already formed in the skull by the four pins 43, in order to reduce the trauma to the patient, in this embodiment, the pair of fixing hole groups of the fixing portion 4 can also fix the pulse generator, that is, the four positioning holes formed by the four pins 43 are in one-to-one correspondence with the four mounting holes of the fixing hole group of the pulse generator, so that a new positioning hole for fixing the pulse generator does not need to be formed any more, and the trauma to the patient is reduced.

Further, since the radian of the skull of each patient is different, in order to facilitate the fixation of the base 2 with the skull firmly, the fixing portion 4 further comprises a boss 44, the boss 44 is disposed at a portion of the face of the base 2 facing the skull, which is located at the edge of the mounting hole 42, four bosses 44 can be abutted with the skull, the mounting hole 42 extends to an end face of the boss 44 abutted with the skull, four pins 43 can make the four bosses 44 abutted with the outer surface of the skull, so as to fix the base 2 on the outer surface of the skull firmly,

with the above structure, in order to firmly connect the inner ring 21 to the outer ring 22, the base 2 preferably includes four connectors 23, and the four connectors 23 are all disposed on a predetermined path and are respectively close to the four fixing holes 41, so as to ensure the connection strength between the inner ring 21 and the fixing portion 4 when the volume of the connectors 23 is minimum, and avoid the inner ring 21 from being deformed when the cutter 1 abuts against the inner ring 21.

Further, in order to prevent the cut skull from falling down and to facilitate removal of the cut skull, the inner side wall of the base 2 in the profiling groove 3 is inclined, and the area of the cross section of the profiling groove 3 is gradually reduced in the direction in which the cutter 1 extends into the profiling groove 3.

Specifically, in the present embodiment, the outer side surface of the inner ring body 21 and the inner side surface of the outer ring body 22 are both inclined, and the profile of the cross section of the outer side surface of the inner ring body 21 and the profile of the cross section of the inner side surface of the outer ring body 22 are both gradually reduced in the direction along which the cutter 1 extends into the imitation groove 3, so that an inverted taper is formed on the incision, whereby when the skull is cut, the cut portion of the skull will abut against the incision of the skull, not only preventing the cut portion of the skull from falling, but also facilitating the removal of the cut portion of the skull.

The ultrasonic bone knife converts electric energy into mechanical energy by using a high-intensity focused ultrasonic technology through a transducer, and the contacted tissue cell water is vaporized and protein hydrogen bonds are broken by high-frequency ultrasonic oscillation, so that bone tissues needing to be cut in the operation are thoroughly destroyed. When in use, the temperature of the ultrasonic osteotome head is lower than 38 ℃, and the surrounding propagation distance is less than 200 microns. Because the high-intensity focused ultrasonic wave only has a destructive effect on bone tissues with specific hardness, blood vessels and nerve tissues can not be destroyed, the hemostatic effect on the operation wound can be achieved, the minimally invasive operation wound is further reduced, and the accuracy, reliability and safety of the operation are greatly improved. Further, in the present embodiment, the tool 1 is an ultrasonic osteotome.

Example two

In the first embodiment, the four positioning holes formed by the four pins 43 are in one-to-one correspondence with the four mounting holes of the fixed hole group of the pulse generator, so that the requirement on the accuracy of the size of the positioning holes formed by the self-tapping of the four pins 43 is higher, and the four positioning holes formed by the self-tapping of the four pins 43 have errors with the fixed hole group of the pulse generator in the forming process because the skull of the head of a person is harder, so that the pulse generator cannot be fixed, and larger wound is brought to the patient.

In order to solve the above-described problem, in the present embodiment, the fixing portion 4 is provided on the inner ring body 21 so that the positioning hole to be opened of the fixing portion 4 is provided on the skull to be cut off, thereby reducing the trauma of the patient.

Specifically, as shown in fig. 7 to 9, in the present embodiment, four fixing holes 41 are all provided on the inner ring body 21, the four fixing holes 41 are respectively close to four top corners of the inner ring body 21, four mounting holes 42 are respectively provided at bottoms of the four fixing holes 41, the mounting holes 42 extend to a face of the base 2 opposite to the skull, four pins 43 are respectively provided in the four fixing holes 41, the pins 43 can pass through and extend out of the mounting holes 42, and a portion of the pins 43 extending out of the mounting holes 42 is provided with threads and can abut against the skull, when in use, a doctor firstly makes four points according to a position of a cut, and nails the four pins 43 located in the four fixing holes 41 into the four points respectively, so that the four pins 43 press and fix the inner ring body 21 on the skull, the four pins 43 self-tap the four holes onto the skull to be cut, thereby reducing trauma of the patient.

Since the connecting body 23 will necessarily break a part of the profiling groove 3, the cutter 1 will not form a continuous incision in the skull after cutting along the predetermined path of the profiling groove 3, at this time, the base 2 needs to be removed, and then the cutter 1 will be used to continue cutting along the incision to form a closed incision, thereby cutting off a part of the skull.

Because the cutter 1 is pressed against the outer side wall of the inner ring body 21 and the inner side wall of the outer ring body 22 in the cutting process, in order to avoid the inner ring body 21 from being pressed and deformed, in this embodiment, the connecting body 23 includes a first connecting portion 231 and a second connecting portion 232, the first connecting portion 231 is disposed in the imitation groove 3, the first connecting portion 231 is communicated with the outer side wall of the inner ring body 21 and the inner side wall of the outer ring body 22, and the second connecting portion 232 is disposed on the inner side wall of the inner ring body 21 and can be communicated with the inner side wall of the inner ring body 21, so that the structural strength of the inner ring body 21 is enhanced, and the deformation of the inner ring body 21 can be reduced.

Preferably, in the present embodiment, the second connection portion 232 is cross-shaped, and the second connection portion 232 can be respectively connected with two pairs of opposite angles of the inner ring 21, and the four fixing holes 41 are respectively disposed on the four opposite angles of the inner ring 21 and located at the connection position between the inner ring 21 and the second connection portion 232, so that not only the structural strength of the inner ring 21 is enhanced, but also the structural strength between the fixing portion 4 and the base 2 is enhanced, and the base 2 can be more firmly fixed on the skull.

Because the cutter 1 cuts the skull more, make the clearance of incision great, even with the inside wall slope setting that base 2 is arranged in imitative groove 3 to imitative groove 3's cross section's area reduces gradually along cutter 1 stretches into imitative groove 3's direction, the skull after the excision can't support and press in incision department, and still can drop. In order to solve the above problem, in this embodiment, the base 2 is further provided with a preformed hole 2321, the preformed hole 2321 is disposed on the second connecting portion 232 and is located at the center of the preset profile, a medical staff can open a connecting hole on the skull exposed by the preformed hole 2321 and connect to the connecting hole through other tools, and when the medical staff uses the cutter 1 to cut the remaining break point to form a closed incision, the medical staff can use other tools to connect to the skull to be cut off first, so as to be convenient for taking out the skull, and can prevent the cut skull from falling into the incision.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. A skull grooving tool comprising a tool (1) for cutting a skull, characterized in that the skull grooving tool further comprises:

a base (2);

a fixing part (4) arranged on the base (2), wherein the fixing part (4) can be connected to the skull and fix the base (2) to the skull; a kind of electronic device with high-pressure air-conditioning system

A profiling groove (3) arranged on the base (2), wherein the profiling groove (3) extends along a preset path, the cutter (1) can extend into the profiling groove (3) and is abutted against the skull exposed out of the profiling groove (3), and the profiling groove (3) can guide the cutter (1) extending into the profiling groove (3) to cut the skull along the preset path;

the inner side wall of the base (2) in the profiling groove (3) is obliquely arranged, and the area of the cross section of the profiling groove (3) is gradually reduced along the direction that the cutter (1) stretches into the profiling groove (3);

the base (2) comprises:

an inner ring body (21) and an outer ring body (22), wherein the inner ring body (21) is arranged in an inner ring of the outer ring body (22), and the outer side wall of the inner ring body (21) is arranged opposite to the inner side wall of the outer ring body (22) so as to form the profiling groove (3); a kind of electronic device with high-pressure air-conditioning system

A connecting body (23), wherein the inner ring body (21) and the outer ring body (22) are connected to the connecting body (23);

the connecting body (23) comprises a first connecting part (231), and the first connecting part (231) is arranged in the profiling groove (3);

the connecting body (23) further comprises a second connecting portion (232), the second connecting portion (232) is arranged on the inner ring body (21), and the second connecting portion (232) can be communicated with the inner side face of the inner ring body (21).

2. A skull grooving tool according to claim 1, wherein the fixing part (4) is provided on the outer ring body (22).

3. A skull grooving tool according to claim 1, wherein the fixing part (4) is provided on the inner ring body (21).

4. A skull grooving tool according to claim 1, wherein the second connection portion (232) is provided with a preformed hole (2321), the preformed hole (2321) being capable of exposing a portion of the skull.

5. A skull grooving tool according to claim 1, wherein the end faces of the base (2) opposite and facing away from the skull each extend in an arc along a first direction, the first direction being the width direction of the skull.

6. A skull grooving tool according to claim 1, wherein the fixing portion (4) comprises:

a pair of fixed hole groups which are oppositely arranged on the outer ring body (22), wherein one fixed hole group comprises two fixed holes (41) which are arranged at intervals;

four mounting holes (42) are respectively arranged at the bottoms of the four fixing holes (41), and the mounting holes (42) extend to one surface of the base (2) opposite to the skull;

four pins (43) are respectively arranged in the four fixing holes (41), the pins (43) can penetrate through and extend out of the mounting holes (42), and the parts, extending out of the mounting holes (42), of the pins (43) are provided with threads and can be abutted with the skull.

7. A skull grooving tool according to claim 6, characterized in that a portion of the face of the base (2) facing the skull at the edge of the mounting hole (42) is provided with bosses (44), four of the bosses (44) being able to abut the skull, the mounting hole (42) extending to the end face of the boss (44) abutting the skull.

8. A skull grooving tool according to claim 6, wherein the base (2) comprises four connection bodies (23), the four connection bodies (23) being arranged in the profiling groove (3) and being adjacent to the four fixation holes (41), respectively.

9. A skull slotting tool according to claim 6, wherein the pins (43) are made of titanium alloy.

10. A skull grooving tool according to any one of claims 1-9, wherein the pre-set path is quadrilateral or circular, the apex angle of the quadrilateral being transited by an arc.

11. A skull grooving tool according to any one of claims 1-9, characterized in that the tool (1) is an ultrasonic bone knife.