CN113041085B - Fixing device in neurosurgery operation - Google Patents

Abstract

The invention discloses a fixing device in neurosurgery, which comprises an operating table, a head fixing component and a plurality of groups of trunk fixing components, wherein the head fixing component is arranged at one end of the operating table; the trunk fixing assembly comprises a trunk positioning piece and a trunk positioning needle movably connected with the trunk positioning piece; the truck positioning part comprises a truck positioning body, a square pulling plate slot arranged inside the truck positioning body, and a locking plate movably connected with the pulling plate slot, wherein the locking plate slides into the slot and is used for limiting a truck positioning needle passing through the truck positioning part after being pulled back. The fixing device in the neurosurgery provided by the invention has the advantages of reasonable design structure and simplicity and convenience in operation, the head and the trunk of a patient can be limited by adjusting the head positioning motor and the trunk positioning motor, and the phenomenon that the patient moves randomly and the treatment effect is influenced can be effectively avoided.

Description

An intraoperative fixation device for neurosurgery

technical field

The present invention relates to the technical field of medical equipment, in particular to a neurosurgery intraoperative fixation device.

Background technique

Neurosurgery is usually a process of using surgical equipment or instruments, under the operation of surgeons or other professionals, to enter the human body or other biological tissues to exclude lesions, change structures or implant foreign objects.

During the surgical operation, the patient's limb needs to be fixed. In the prior art, the neurosurgery fixator has a poor fixation effect. During the neurosurgery operation, the patient easily touches the wound due to confusion and other reasons. , knocking off the oxygen tube or other infusion and treatment devices, thereby affecting the treatment effect.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides an intraoperative fixation device for neurosurgery, comprising an operating table (1), a head fixing assembly (2) arranged at one end of the operating table (1), and Multiple groups of trunk fixing assemblies (3) on both sides of the table (1); wherein, the trunk fixing assemblies (3) include a trunk positioning member (35), and a trunk positioning pin movably connected with the trunk positioning member (35) (36); the trunk positioning needle (36) includes a positioning needle body (361), a slot (362) regularly arranged on the positioning needle body (361), and a positioning needle body (361) respectively arranged on the positioning needle body (361) ) at both ends of the second limiting cap (363) and the buffer member (364); the torso positioning member (35) includes a torso positioning body (351), and a square drawing board inserted inside the torso positioning body (351) a slot (352), and a lock plate (353) movably connected to the drawer slot (352), the torso positioning body (351) is provided with a plurality of through holes (3511); the lock plate (353) ) is provided with a fixing hole (3531) matched with the through hole (3511), wherein the fixing hole (3531) includes conical holes (35311) respectively arranged on the upper and lower sides of the lock plate (353), The conical holes (35311) on the upper and lower sides cooperate with each other, and after being connected, a limiter (35312) with a gradually increasing thickness is formed at the connecting part; the lock plate (353) slides into the drawer slot (352) for After pulling back, the limiting piece (35312) is snapped into the slot (362) of the trunk positioning pin (36), so as to limit the trunk positioning pin (36) passing through the trunk positioning piece (35) .

Preferably, the head fixing assembly includes a cuboid base, a head positioning motor connected to the base, a lateral slider slidably connected to the base, and a head fixing member disposed on the top of the lateral slider .

Preferably, the head fixing member includes a plurality of head positioning grooves regularly arranged in the transverse direction, and head positioning members respectively arranged in the head positioning grooves; wherein, the head positioning member includes a head positioning pin, A spring connected with one end of the head positioning needle, and a first limiting cap connected with the other end of the spring, wherein the spring is clamped in the head positioning groove.

Preferably, the head positioning slot includes a cylindrical through slot, and a cylindrical limiting block connected with one end of the through slot and having a hollow structure, wherein the diameter of the hollow structure of the cylindrical limiting block is smaller than the diameter of the through slot, larger than the diameter of the head positioning needle.

Preferably, the torso fixing assembly includes a support, a torso positioning motor arranged on the top of the support, a longitudinal slider connected to the torso positioning motor in a driving manner, and a connecting piece connected to the longitudinal slider, wherein the The connecting piece is also connected to the torso positioning piece.

Preferably, the support comprises a support base, an extension plate connected with the support base, and a support column vertically arranged with the support base; the support column is provided with a longitudinal sliding groove for the longitudinal sliding block to pass through. .

Preferably, the angle between the inclined plane of the tapered hole and the horizontal plane is 45°.

On the other hand, the present invention also provides a method for using the fixation device in neurosurgery, comprising the following steps:

S1. The operator slides the locking plate into the slot of the drawing plate; S2. The operator passes the torso positioning needle through the through hole in turn, and the fixing hole of the locking plate is inserted into the torso positioning body; S3. The torso positioning motor works to drive The overall structure composed of the longitudinal slider, the connecting piece and the trunk positioning piece descends, and the trunk positioning needle abuts against the patient's trunk; S4, the trunk positioning motor continues to work until the trunk positioning needle is in full contact with the patient's torso; S5, the operator locks the plate Pull back and snap the limiter of the locking plate into the slot of the torso positioning needle; S6, the patient lies on the operating table; S7, the operator starts the head positioning motor, and drives the lateral slider to slide in the sliding slot, so that the The head positioning needle set on the head fixing piece is in contact with the patient's head; S8, the operator starts the trunk positioning motor, drives the longitudinal slider, and the overall structure formed by the connecting piece and the trunk positioning piece is longitudinally carried out on the support column. Move so that the bumper of the torso positioning needle abuts the patient's torso.

By adopting the above-mentioned technical scheme, the present invention mainly has the following technical effects:

1. By abutting the head positioning needle with the patient's head and using a fixed motor to work, the head positioning needle and the patient's head will compress the spring during the extrusion process, and use the restoring force of the compressed spring to limit the The patient's head movement, thereby preventing the patient from turbulent phenomenon, affecting the treatment effect.

2. By setting the lock plate and the drawer slot that is slidably connected to the lock plate, slide the lock plate into the drawer slot and insert the torso positioning pin into the torso positioning body, and the torso positioning motor works to make the torso The positioning needle is in full contact with the patient's torso, and then the locking plate is pulled back, and the limiter of the locking plate is inserted into the slot of the torso positioning needle, so as to limit the torso positioning needle and prevent the torso positioning needle from hitting the patient's body. When the trunk is limited, the trunk positioning needle loses its fixed nursing effect due to the patient's movement. At the same time, the positioning of the patient's trunk is limited by multiple trunk positioning, and the fixation effect is better.

3. By making the head positioning needle and the buffer material medical silicone, the medical silicone has a certain elasticity and softness, and the fixing device can effectively cause secondary injury to the patient when the patient's head and torso are limited. .

4. The design structure is reasonable and the operation is simple. The operator can limit the patient's head and torso by adjusting the head positioning motor and the trunk positioning motor, which is highly practical.

Description of drawings

1 is a schematic structural diagram of a neurosurgery fixation device of the present invention;

2 is a schematic structural diagram of a head fixing assembly in a neurosurgery intraoperative fixing device of the present invention;

Fig. 3 is an enlarged view of part A in Fig. 2;

4 is a schematic structural diagram of a trunk fixation component in a neurosurgery intraoperative fixation device of the present invention;

Fig. 5 is an enlarged view of part B in Fig. 4;

6 is a schematic structural diagram of a trunk positioning needle of a neurosurgery intraoperative fixation device of the present invention;

7 is a partial cross-sectional view of the trunk positioning member (before the locking plate is pulled back) in a neurosurgery intraoperative fixation device of the present invention;

8 is a partial cross-sectional view of the trunk positioning member (after the locking plate is pulled back) in a neurosurgery intraoperative fixation device of the present invention.

Among them, the meanings of the reference signs are as follows:

1. Operating table;

2. Head fixing assembly; 21, Base; 211, Sliding slot; 212, Telescopic output shaft; 22, Head positioning motor; 23, Horizontal slider; 24, Head fixing part; 241, Head positioning slot; 2411 , through slot; 2412, cylindrical limit block; 242, head positioning piece; 2421, head positioning needle; 2422, spring; 2423, first limit cap;

3. Trunk fixing assembly; 31. Support; 311, Support seat; 312, Extension plate; 313, Support column; 3131, Longitudinal sliding slot; 32, Torso positioning motor; 33, Longitudinal slider; 331, Tapped hole; 34 341, inclined surface; 35, trunk positioning piece; 351, trunk positioning body; 3511, through hole; 352, draw plate slot; 353, lock plate; 3531, fixing hole; 35311, tapered hole; Limiting piece; 3532, U-shaped handle; 36, trunk positioning needle; 361, positioning needle body; 362, slot; 363, second limit cap; 364, buffer piece.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the description of the present invention. Obviously, the described embodiments are only Some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Referring to FIGS. 1-8, the present invention provides a neurosurgery intraoperative fixation device. In practical application, the neurosurgery intraoperative fixation device is used for different angles and heights of the head and torso of a patient undergoing neurosurgery. In order to prevent the patient from touching the wound due to confusion and other reasons during the operation, and knocking off the oxygen delivery tube or other infusion and treatment devices, the treatment effect will be affected. It includes an operating table 1 , a head fixing component 2 arranged at one end of the operating table 1 , and a trunk fixing component 3 arranged on both sides of the operating table 1 .

The operating table 1 is a platform for the patient to lie down in the neurosurgery operation, and the head fixing assembly 2 can be placed on both sides of the patient's head according to the specific lying position of the patient, and is used for the neurosurgery operation. The head performs fixed care, which includes a cuboid-shaped base 21, a head positioning motor 22 connected to the base 21, a lateral slider 23 slidably connected to the base 21, and arranged on the top of the lateral slider 23 The head mount 24. The base 21 is slidably connected to the lateral slider 23 , and the lateral slider 23 can slide on the base 21 to drive the head fixing member 24 disposed on the top of the lateral slider 23 to move laterally with the lateral slider 23 . Specifically, a square sliding slot 211 is laterally provided on the base 21, the head positioning motor 22 is a telescopic motor, and the telescopic output shaft 212 of the telescopic motor is connected to the bottom of the lateral slider 23, and the head positioning motor 22 works, and the horizontal sliding block 23 is driven by the telescopic output shaft 212 to slide in the sliding groove 211, thereby driving the head fixing member 24 to move.

Further, the top of the lateral slider 23 is provided with a square head fixing member 24, and the head fixing member 24 includes a plurality of horizontally arranged head positioning grooves 241 distributed in a square array, and can be arranged on the head The plurality of head positioning members 242 in the positioning groove 241 can be fixed in the head positioning groove 241 by selecting one end of the plurality of head positioning members 242 according to the actual position of the patient's head. , and the other end is in contact with the patient's head, and then multiple head positioning members 242 are used to limit the patient's head at the same time to prevent the patient's head from tampering during the operation.

Further, the head positioning member 242 includes a head positioning pin 2421, a spring 2422 connected with one end of the head positioning pin 2421, and a first limiting cap 2423 connected with the other end of the spring 2422, wherein, The spring 2422 is clamped in the head positioning groove 241. Specifically, the head positioning groove 241 includes a cylindrical through groove 2411 and a cylindrical limit block connected with one end of the through groove 2411 and having a central cavity. 2412, wherein the diameter of the central cavity of the cylindrical limit block 2412 is smaller than the diameter of the spring 2422 and slightly larger than the diameter of the head positioning pin 2421. By setting the limit block 2412, the spring 2422 can be limited in the through groove 2411 Compression or tension, and the head positioning needle 2421 connected at the end of the spring can pass through the central cavity of the cylindrical limit block 2412 and protrude out of the head positioning groove 241, and abut with the patient's head, so that the patient At the same time, to fix the spring 2422 in the through groove 2411, the end of the spring 2422 away from the head positioning needle 2421 is connected with the first limit cap 2423, and the first limit cap 2423 is fixed and clamped on the At the other end of the through slot 2411 , by fixing the first limiting cap 2423 , the spring 2422 and the head positioning pin 2421 connected to the spring 2422 can be fixed.

It should be noted here that the present invention includes two sets of oppositely arranged head fixing assemblies 2 at the same time. Therefore, when the two sets of oppositely arranged head fixing assemblies 2 are close to each other, first move the two sets of head fixing assemblies 2 to make the The head positioning needles 2421 are respectively abutted on both sides of the patient's head, and the two sets of head positioning motors 22 are activated to push the two sets of lateral sliders 23 to move relative to each other, and then drive the head fixture 24 to move, so that the head is positioned. The needle 2421 is further in contact with the patient's head, and the spring 2422 located in the through groove 2411 is compressed to a certain extent, the head fixing motor 22 stops working, and under the action of the restoring force of the compressed spring 2422, the patient's head is further restricted. movement to prevent the patient from moving.

Of course, when the head positioning needle 2421 limits the position of the patient's head, in order to avoid secondary injury when the head positioning needle 2421 squeezes the patient, the head positioning needle 2421 is made of a material with a certain degree of elasticity and elasticity. The material of softness, preferably, the material of the head positioning needle 2421 is medical silica gel. The protective cover adapted to the shape of the head improves the comfort of the patient.

The torso fixing assembly 3 includes a support 31 , a torso positioning motor 32 disposed on the top of the support 31 , a longitudinal slider 33 disposed at the bottom end of the torso positioning motor 32 and drivingly connected to it, and the longitudinal slider 33 . The connected connecting piece 34 , the trunk positioning piece 35 connected with the connecting piece 34 , and the trunk positioning pin 36 movably connected with the trunk positioning piece 35 . The support base 31 includes a support base 311 , an extension plate 312 connected to the support base 311 , and a support column 313 vertically arranged with the support base 311 , and the support base 311 is used to support the trunk fixing assembly 3 ; The extension plate 312 is connected with the support base 311, and is located on the same plane, and is in contact with the ground at the same time with the support base 311 during operation, for increasing the contact area between the support base 31 and the ground, to balance the center of gravity of the trunk fixing assembly 3, It makes the trunk fixing assembly 3 placed on the ground more stable.

Further, the trunk positioning motor 32 is arranged on the top of the support column 313, and is used to drive the longitudinal slider 33, the overall structure formed by the connecting piece 34 and the trunk positioning piece 35 to move longitudinally on the support column 313, so as to The patient's torso is immobilized. Specifically, the support column 313 is provided with a longitudinal sliding groove 3131 for the longitudinal sliding block 33 to pass through. The specific way of moving is that the trunk positioning motor 32 is connected with the longitudinal slider 33, wherein the trunk positioning motor 32 is also a telescopic motor, and the longitudinal slider 33, the connecting piece 34 and the trunk positioning can be driven by the trunk positioning motor 32 working. The overall structure formed by the member 35 moves longitudinally on the longitudinal sliding groove 3131. The connection method between the trunk positioning motor 32 and the longitudinal slider 33 is not limited here. Preferably, in this embodiment, the longitudinal slider 33 is provided with a longitudinal There are threaded holes 331 , through which the longitudinal slider 33 can be connected to the trunk positioning motor 32 .

Further, the connecting piece 34 connects the longitudinal sliding block 33 with the trunk positioning piece 35, and then the longitudinal sliding block 33, the connecting piece 34 and the trunk positioning piece 35 form an integral structure, wherein the upper surface of the connecting piece 34 is provided with an integral structure. The inclined surface 341 is used to reduce the weight of the connecting piece 34 and at the same time increase the structural strength to meet the requirements of the mechanical structure.

The trunk positioning member 35 includes a trunk positioning body 351, a square drawing board slot 352 disposed inside the trunk positioning body 351, and a locking plate 353 movably connected with the drawing board slot 352, wherein the trunk The positioning body 351 is provided with a plurality of through holes 3511 through which the torso positioning needle 36 can pass through. Of course, the through holes 3511 also pass through the drawer slot 352 provided inside the torso positioning body 351. The operator locks the plate 353 The locking plate 353 can be movably connected with the torso positioning body 351 by sliding it into the drawing plate slot 352 .

Further, the locking plate 353 is provided with a fixing hole 3531 corresponding to and matching the position of the through hole 3511 , wherein, the fixing hole 3531 is a through hole, and the fixing holes 3531 are respectively arranged on the upper and lower sides of the locking plate 353 . The conical holes 35311 on the upper and lower sides cooperate with each other, and after being connected, a limiter 35312 whose thickness gradually increases from the inside of the fixing hole 3531 to the edge is formed at the connecting part. The size of the shaped hole 35311 is exactly the same, and the limiting member 35312 is located in the center of the fixing hole 3531 . The angle between the inclined plane of the tapered hole 35311 and the horizontal plane is not limited here. Preferably, in this embodiment, the angle between the inclined plane of the tapered hole 35311 and the horizontal plane is 45°.

Further, the trunk positioning needle 36 includes a positioning needle body 361, a plurality of slots 362 set along the length direction of the positioning needle body 361, and second limiters respectively arranged at both ends of the positioning needle body 361. The cap 363 and the buffer member 364, wherein the slot 362 is adapted to the size of the tapered hole 35311, the trunk positioning pin 36 cooperates with the through hole 3511 on the trunk positioning body 351, and the trunk positioning pin 36 can pass through The through hole 3511 is inserted into the trunk positioning body 351 through the drawer slot 352 . When the trunk positioning needle 36 is inserted into the trunk positioning body 351 , it is used to fix the trunk of the patient lying on the operating table 1 , wherein the diameter of the second limiting cap 363 is larger than the diameter of the through hole 3511 , is used to limit the trunk positioning needle 36 to prevent the entire trunk positioning needle 36 from passing through the through hole 3511 so that it cannot be inserted into the trunk positioning body 351. It is used to limit the patient's trunk to limit the movement of the patient's trunk, thereby preventing the patient from moving. The method is the same as that of the head positioning needle 2421 for limiting the position of the patient's head, which will not be repeated here. Of course, the material of the buffer member 364 is also medical silica gel.

In the present invention, the specific process of positioning the torso positioning needle 36 on the patient's torso is as follows. First, the operator slides the locking plate 353 into the drawer slot 352, and then passes the torso positioning needle 36 through the through hole 3511 in sequence, and locks the lock plate 353. The fixing hole 3531 of the plate 353 is inserted into the trunk positioning body 351, and then the trunk positioning motor 32 is used to work to drive the longitudinal slider 33, the connecting piece 34 and the trunk positioning piece 35. The overall structure is lowered until the trunk positioning needle 36 and the patient The torso abuts, and the torso positioning motor 32 continues to work until the torso positioning needle 36 is in full contact with the patient's torso. At this time, the torso positioning motor 32 stops working, and the operator pulls the lock plate 353 back, and the lock plate 353 can be locked. The limiting member 35312 is snapped into the slot 362 of the trunk positioning needle 36, so as to limit the trunk positioning needle 36 and prevent the trunk positioning needle 36 from failing due to patient movement. Of course, in this embodiment, the practicability of the invention can be enhanced by arranging multiple groups of trunk fixing assemblies 3 at the same time. Of course, by arranging a plurality of trunk positioning needles 36 in one set of fixing assemblies 3, during operation, they are fully contacted with the patient's trunk when abutting, so as to further limit the position of the patient's trunk.

Specifically, referring to FIGS. 7-8 , the process of limiting the position of the trunk positioning pin 36 by the trunk positioning member 35 is as follows: The trunk positioning needle 36 is limited in the lateral direction. When the operator pulls back the locking plate 353, the limiter 35312 is just locked into the slot 362 of the trunk positioning needle 35, and the trunk positioning needle 36 can be vertically positioned. The position of the torso positioning member 35 is limited, and the position of the torso positioning needle 36 is limited. It should be noted that, in the present invention, since the trunk positioning needle 36 is made of medical silicone, which has certain elasticity and softness, even when the locking plate 353 is pulled back, the limiting member 35312 does not have a gap with the slot 362 On the same horizontal line, the trunk positioning needle 35 can also be squeezed by the limiting member 35312, so that after the positioning needle body 361 of the trunk positioning needle 36 is compressed to a certain extent, the limiting member 35312 can slide through the compressed positioning needle body 361. into the notch of the slot 362 to limit the longitudinal position of the trunk positioning needle 36 .

Further, in order to facilitate the operator to slide the lock plate 353 into the drawer slot 352 and pull the lock plate 353 back from the drawer slot 352, one end of the lock plate 353 is also provided with a U-shaped handle 3532. .

The fixation device provided by the present invention performs the following steps to fix the neurosurgery patient: S1, the operator slides the locking plate 353 into the drawing plate slot 352; S2, the operator sequentially passes the trunk positioning needle 36 through the through hole 3511 , the fixing hole 3531 of the lock plate 353 is inserted into the trunk positioning body 351; S3, the trunk positioning motor 32 works to drive the longitudinal slider 33, the overall structure formed by the connecting piece 34 and the trunk positioning piece 35 is lowered, and the trunk positioning needle 36 is connected to The patient's torso is in contact; S4, the trunk positioning motor 32 continues to work until the trunk positioning needle 36 is fully in contact with the patient's torso; S5, the operator pulls back the locking plate 353, and the limiter 35312 of the locking plate 353 is inserted into the torso positioning needle 36 in the slot 362; S6, the patient is lying on the operating table 1; S7, the operator starts the head positioning motor 22, drives the transverse slider 23 to slide in the sliding slot 211, and makes the The head positioning needle 2421 is in contact with the patient's head; S8, the operator starts the trunk positioning motor 32, drives the longitudinal slider 33, and the overall structure formed by the connecting piece 34 and the trunk positioning piece 35 moves longitudinally on the support column 313, The bumper 364 of the torso positioning needle 36 is brought into abutment with the torso of the patient.

Finally, it should be noted that the embodiments of the present invention disclose only preferred embodiments of the present invention, and are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments It should be understood by those of ordinary skill in the art; it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the corresponding technical solutions. The essence of the invention deviates from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (8)

1. The fixing device in the neurosurgery is characterized by comprising an operating table (1), a head fixing component (2) arranged at one end of the operating table (1) and a plurality of groups of trunk fixing components (3) arranged at two sides of the operating table (1); the trunk fixing component (3) comprises a trunk positioning piece (35) and a trunk positioning needle (36) movably connected with the trunk positioning piece (35); the trunk positioning needle (36) comprises a positioning needle body (361), a slot (362) regularly arranged on the positioning needle body (361), and second limiting caps (363) and buffers (364) respectively arranged at two ends of the positioning needle body (361); the trunk positioning piece (35) comprises a trunk positioning body (351), a square draw plate slot (352) arranged in the trunk positioning body (351), and a lock plate (353) movably connected with the draw plate slot (352), wherein a plurality of through holes (3511) are formed in the trunk positioning body (351); the lock plate (353) is provided with a fixing hole (3531) matched with the through hole (3511), wherein the fixing hole (3531) comprises tapered holes (35311) respectively arranged at the upper side and the lower side of the lock plate (353), the tapered holes (35311) at the upper side and the lower side are matched with each other, and after being connected, a limiting piece (35312) with gradually increased thickness is formed at a connecting part; the lock plate (353) slides into the drawing plate slot (352) and is used for enabling the limiting piece (35312) to be clamped into the slot (362) of the trunk positioning pin (36) after being pulled back so as to limit the trunk positioning pin (36) penetrating through the trunk positioning piece (35).

2. A neurosurgical fixation device according to claim 1, wherein the head fixation assembly (2) comprises a cuboid shaped base (21), a head positioning motor (22) connected to the base (21), a transverse slider (23) slidably connected to the base (21), and a head fixation member (24) arranged on top of the transverse slider (23).

3. A neurosurgical fixation device according to claim 2 wherein the head fixation member (24) comprises a plurality of head positioning slots (241) arranged laterally in a regular pattern, and head positioning members (242) respectively arranged in the head positioning slots (241); the head positioning piece (242) comprises a head positioning needle (2421), a spring (2422) connected with one end of the head positioning needle (2421), and a first limiting cap (2423) connected with the other end of the spring (2422), wherein the spring (2422) is clamped in the head positioning groove (241).

4. The neurosurgical fixing device according to claim 3, wherein the head positioning groove (241) comprises a cylindrical through groove (2411) and a cylindrical limiting block (2412) which is connected with one end of the through groove (2411) and has a hollow structure, wherein the diameter of the hollow structure of the cylindrical limiting block (2412) is smaller than that of the through groove (2411) and larger than that of the head positioning needle (2421).

5. A neurosurgical fixation device according to any one of claims 1-4, wherein the trunk fixation assembly (3) comprises a support (31), a trunk positioning motor (32) arranged on top of the support (31), a longitudinal slide (33) in transmission connection with the trunk positioning motor (32), and a connecting member (34) connected with the longitudinal slide (33), wherein the connecting member (34) is further connected with a trunk positioning member (35).

6. A neurosurgical fixation device according to claim 5, wherein the support (31) comprises a support base (311), an extension plate (312) connected to the support base (311), and a support post (313) arranged perpendicular to the support base (311); the supporting column (313) is provided with a longitudinal sliding groove (3131) for the longitudinal sliding block (33) to longitudinally pass through.

7. A neurosurgical fixation device according to claim 1 wherein the inclined surface of the tapered hole (35311) is angled at 45 ° to the horizontal.

8. A method of using a fixation device in neurosurgery, using a fixation device according to any of claims 1-7, comprising the steps of:

s1, an operator slides the lock plate (353) into the draw plate slot (352); s2, an operator sequentially penetrates the trunk positioning needle (36) through the through hole (3511), and the fixing hole (3531) of the lock plate (353) is inserted into the trunk positioning body (351); s3, the trunk positioning motor (32) works to drive the longitudinal slide block (33), the whole structure formed by the connecting piece (34) and the trunk positioning piece (35) to descend, and the trunk positioning needle (36) is abutted to the trunk of the patient; s4, the trunk positioning motor (32) continues to work until the trunk positioning needle (36) is fully contacted with the trunk of the patient; s5, an operator pulls back the lock plate (353), and the limit piece (35312) of the lock plate (353) is clamped into the slot (362) of the trunk positioning pin (36); s6, laying the patient on the operating table (1); s7, the operator starts the head positioning motor (22) to drive the transverse slide block (23) to slide in the slide groove (211), so that the head positioning needle (2421) arranged on the head fixing piece (24) is abutted to the head of the patient; s8, the operator starts the trunk positioning motor (32) to drive the whole structure composed of the longitudinal slide block (33), the connecting piece (34) and the trunk positioning piece (35) to move longitudinally on the supporting column (313), so that the buffer piece (364) of the trunk positioning needle (36) is abutted to the trunk of the patient.

Images