WO2018236034A1 - Fixing pin for fixing the head of a patient and fixing device including the same - Google Patents

Abstract

Disclosed is an embodiment comprising a fixing pin for fixing a head of a patient during a medical diagnosis, treatment or surgery. In one embodiment, a fixing pin comprises: a pin body made of a first metal material; an intermediate body which is made of a nonmetal material and is fixed to one side of the pin body; and a pin tip which is made of a second metal material and is fixed to the intermediate body at an opposite side of the pin body.

Description

Fixing pin for fixing the head of a patient and fixing device including the same

The present disclosure relates to a fixation pin for fixation of a head of a patient and a fixation device including the fixation pin.

During a neurological diagnosis, treatment, or surgical operation of the patient's head, a reference device is fixed / mounted to the patient's head using a fixation device. Such a reference device is used for detecting the position of a specific region of a region / tissue related to a diagnosis or the like in a patient. Typically, the reference device includes a position detection sensor, a pin tip penetrating through the scalp of the patient to be immersed / fixed in the skull, a fixed post fixed to the pin tip, and a stereotactic frame to which the position detection sensor and the fixed post are fixed. .

For example, a head of a patient can be diagnosed or treated using an imaging device. The imaging device may be, for example, a device such as an MRI (Magnetic Resonance Imaging) or CT device, an X-ray device, a PET or MEG device. During the diagnosis or treatment, the head of the patient enters the imaging device while the reference device is fixed to the patient's head. In this case, the stationary fixation frame of the reference device is disposed around the head portion of the patient so that the fixation pin coupled to the stationary fixation frame presses against the skull, so that the reference device is firmly fixed to the patient's head. In addition, the stationary fixed frame is supported at a predetermined position of the imaging apparatus (for example, an MRI apparatus) with high accuracy.

When a patient is diagnosed using a magnetic resonance imaging technique (for example, MRI diagnosis), due to a large magnetic field generated by the MRI apparatus, the pin tip itself made of a metal material connected to the fixed column and the fixed column made of a metal material Can be heated. If the pin tip, which is in direct contact with the patient's scalp, is heated to a high temperature, the skin of the patient may be burned. In addition, the autonomic nervous system of the patient reacts to the heated pin tip, which can affect the diagnosis result as the patient moves during the diagnosis.

Embodiments of the present disclosure provide a fixation device capable of solving the problems of a reference device or fixation device for fixing the head of a patient according to the prior art described above and capable of firmly fixing the patient's head during medical diagnosis, to provide.

Embodiments of the present disclosure also provide a fixation pin that can minimize skin damage to a patient when the fixation pin of the fixation device that is in direct contact with the patient ' s head is heated.

A pin fixed to a fixed post according to an embodiment of the present disclosure for fixing a head of a patient during medical diagnosis, treatment, or surgery, comprising: a pin body formed of a first metal material and having one end coupled to a fixed post; A pin tip formed of a second metal material and disposed at the other end of the pin body, and an intermediate body formed of a non-metallic material and at least a part disposed between the pin body and the pin tip.

According to one embodiment, the pin tip may be coupled to the pin body by an intermediate.

According to one embodiment, the length of the pin tip may be less than the length of the pin body.

According to one embodiment, the pin tip or intermediate may be interchangeable with respect to the pin body.

According to one embodiment, the pin tip can contact a predetermined point on the head.

According to one embodiment, the first metal material and the second metal material may be identical to each other.

According to one embodiment, the intermediate comprises a first cap and a second cap connected to the first cap, wherein the first cap and the second cap can be opened opposite to each other.

According to one embodiment, an annular space is formed between the first cap and the second cap, and the end of the pin body can be fitted in the annular space.

According to one embodiment, a cylinder wall defining a cylindrical space may be formed at the end of the fin body, and the second cap may be inserted into the cylindrical space.

According to one embodiment, the intermediate comprises: a first plate connecting the first cap and the second cap; And a second plate disposed on the opposite side of a direction in which the second cap is opened and closing one end of the second cap.

According to one embodiment, the pin tip may be inserted into the second cap in the direction in which the second cap is opened.

According to one embodiment, at least one groove formed to pass between both ends of the second cap is formed on the outer circumferential surface of the second cap, and at least one protrusion projected to be inserted into the groove may be formed on the inner circumferential surface of the cylinder wall have.

According to one embodiment, it may further comprise an insert disposed between the pin tip and the intermediate body and being compressed by the pin tip.

According to another embodiment of the present disclosure, there is provided a fixation pin for fixing a head of a patient during medical diagnosis, treatment, or surgery, the fixation pin being coupled to a fixation post, comprising: a pin formed of a first metal material, main body; An intermediate body formed of a non-metallic material and inserted into the other end of the pin body; And a pin tip formed of a second metallic material and inserted into the intermediate body on the opposite side of the pin body.

According to one embodiment, the intermediate may have a sleeve shape that is open in one direction.

According to one embodiment, the intermediate is formed of an elastic material, and the intermediate may comprise a protrusion formed on the outer peripheral surface of at least a part of the intermediate.

According to one embodiment, the pin body has a cylinder wall for receiving the intermediate body, and the inner circumferential surface of at least a part of the cylinder wall may be formed with a protrusion protruding in the center direction.

According to one embodiment, one end of the pin tip is inserted in the open direction of the intermediate, and the other end of the pin tip may have a tapered shape to contact a predetermined point on the head.

According to one embodiment, the projecting portion may have a ring shape, and the jaw may have a ring shape corresponding to the ring shape.

A fixation device for fixing a head of a patient during medical diagnosis, treatment or surgery according to another embodiment of the present disclosure, the fixation device comprising: a stationary fixation frame surrounding at least part of the head; A plurality of fixed columns disposed in the frame; And a plurality of fixing pins, one end of which is fixed directly to each of the plurality of fixed posts, the other end is provided with a tip, and the other end is insulated from the other end.

According to one embodiment, the fixing pin includes: a pin body directly connected to the fixing post; At least a portion of which is inserted into the pin body; And a pin tip, at least a portion of which is inserted into the intermediate.

According to one embodiment, each fixing post is provided with a hole for fixing the fixing pin, and the fixing pin can be inserted into the hole and can engage with the fixing post first than the pin main body.

According to one embodiment, the fixing pin can be inserted into the fixing post in one direction, either forward or rearward of the hole.

According to one embodiment, the bolt further includes at least one bolt for fixing the fixing pin to the fixing post, wherein a nut screw is formed on the inner circumferential surface of at least a part of the pin body, and the bolt is engaged with the nut screw, It can be fixed to fixed column.

According to one embodiment, the diameter of the head of the bolt may be greater than the diameter of the hole.

According to one embodiment, a threaded portion is formed on the outer peripheral surface of at least a part of the pin body, and the hole can be tapped so as to be able to engage with the threaded portion.

According to various embodiments of the present disclosure, it is possible to prevent the position where the pin tip is oriented in the fixation device for fixing the head of the patient from being deviated from the target position corresponding to a predetermined point of the patient's head.

In addition, the fixation device can minimize the damage of the patient's skin due to heat even if the fixing post is heated.

Further, the pin body and the pin tip can be coupled to each other in the fixing device without any additional means.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a fastening device according to one embodiment of the present disclosure;

FIG. 2 is an exploded perspective view showing a disassembled state of the fixing pin and the fixing post in the fixing device shown in FIG. 1. FIG.

3 is an exploded perspective view showing a disassembled state of the fixing pin and the fixing post in a direction different from that of FIG.

4 is an exploded perspective view showing an exploded view of a fixing pin according to an embodiment of the present disclosure;

5 is an exploded perspective view showing a disassembled state of the fixing pin in a direction different from that of FIG.

6 is a cross-sectional view showing a combined state of the fixing pin shown in FIG.

7 is a perspective view showing an exploded view of a fixing pin according to an embodiment of the present disclosure;

8 is a cross-sectional view showing a combined state of the fixing pin shown in FIG.

9 is an exploded perspective view showing an exploded view of a fixing pin according to an embodiment of the present disclosure;

10 is a perspective view showing the state of the intermediate body shown in FIG.

11 is a perspective view showing a state of the pin body shown in FIG.

12 is a cross-sectional view showing a state in which the fixing pin shown in FIG. 9 is engaged.

13 is an exploded perspective view showing a fixing pin and a fixing post according to an embodiment of the present disclosure;

14 is a cross-sectional view showing a combined state of a fixing pin and a fixing post according to an embodiment of the present disclosure.

The embodiments of the present disclosure are illustrated for the purpose of describing the technical idea of the present disclosure. The scope of the claims according to the present disclosure is not limited to the embodiments described below or to the detailed description of these embodiments.

All technical and scientific terms used in the present disclosure have the meaning commonly understood by one of ordinary skill in the art to which this disclosure belongs unless otherwise defined. All terms used in the disclosure are selected for the purpose of more clearly illustrating the disclosure and are not chosen to limit the scope of the rights under the present disclosure.

As used in this disclosure, expressions such as " comprising, " " having, " " having, " and the like, unless the context requires otherwise, (open-ended terms).

The expressions of the singular forms described in this disclosure may include plural meanings unless the context clearly dictates otherwise, and the same applies to the singular expressions set forth in the claims.

As used in this disclosure, expressions such as " first ", " second ", and the like are used to distinguish a plurality of components from each other and do not limit the order or importance of the components.

The dimensions and numerical values set forth in the present disclosure are not limited to the dimensions and numerical values set forth. Unless otherwise specified, these dimensions and numerical values may be understood to mean the stated values and the equivalent ranges encompassing them. For example, the dimensions '2 mm' described in this disclosure can be understood to include 'approximately 2 mm'.

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding components are denoted by the same reference numerals. In the following description of the embodiments, description of the same or corresponding components may be omitted. However, even if a description of components is omitted, such components are not intended to be included in any embodiment.

1 is a perspective view of a fastening device 1 according to an embodiment of the present disclosure;

The fastening device 1 can be used for fixing the head of a patient during medical diagnosis, treatment or surgery. For example, when it is necessary to fix the head position of a patient accurately on a diagnosis device or a surgical apparatus for diagnosis, treatment or surgery for a patient who has a problem caused by external damage or disease in the brain, 1) may be used.

The fixation device 1 includes a stereotactic frame 10 configured to surround at least a part of the head of a patient, a plurality of fixed posts 20 disposed in the fixed frame 10, And a plurality of fixing pins 100 fixed to each of the plurality of fixing pins 20. More specifically, one end of each of the fixing pins 100 is fixed to the corresponding fixing post 20, and a tip is disposed at the other end. Further, an intermediate member 120 (see FIG. 2) including an insulating material may be arranged between one end and the other end of each of the fixing pins 100, and one end thereof may be insulated from the other end thereof. I will explain it in more detail.

One end of each of the fixing pins 100 may be directly coupled to the fixing post 20 without interposing an insulating material therebetween. Further, each of the fixing pins 100 may be disposed so as to face the head of the patient when the patient's head is disposed so as to be surrounded by the stationary fixing frame 10. The tip disposed at the other end of each of the fixing pins 100 having such an orientation can directly contact the scalp of the patient to fix the head position of the patient.

The orthopedic fixing frame 10 may have a generally annular shape as a whole to surround the head of the patient. Further, the entirety of the stationary fixing frame 10 may have a substantially polygonal, circular, or elliptical shape, and in the case of having a polygonal shape, each corner portion of the stationary fixed frame 10 may be roundly rounded. On one side of the stationary frame 10, the opening 14 may be arranged such that at least a portion of the face of the patient is open. For example, when the fastening device 1 is secured and mounted on the patient's head, the generally mouth portion of the patient can be positioned to be open through such opening 14. [ During the medical diagnosis, treatment, or operation, the user or the procedure operator can perform an operation of connecting an insertion tube or the like for maintaining the respiratory function of the patient to the mouth of the patient exposed through the opening portion 14. [

In the stationary fixing frame 10, a plurality of holes 11 for fixing the fixing post 20 along the longitudinal direction of the frame may be formed. Each of the holes 11 can be disposed at a corner or a rounded portion of the stationary fixed frame 10 when the stationary fixed frame 10 has a generally polygonal shape. When the hole 11 is thus disposed in the stationary fixing frame 10, the plurality of holes 11 can be disposed at symmetrical positions around the head of the patient.

The stationary post 20 can be arranged in a direction perpendicular to the longitudinal direction of the frame in the stationary stationary frame 10. The stationary post 20 can be fixed to the stationary stationary frame 10 by fastening means 30, such as bolts or rivets, connected through a hole 11. In this configuration, the fixed post 20 moves in a direction perpendicular to an imaginary plane (not shown) that accommodates the center point of the stationary fixed frame 10 (or in the longitudinal direction of the fixed post 20) Can be adjusted to fit the position.

FIG. 2 is an exploded perspective view showing a disassembled state of a pair of fixing pins 100 and a fixing post 20 coupled to each other in the fixing device 1 shown in FIG. 1. FIG. 3 is an exploded perspective view Is an exploded perspective view showing an exploded view of the pin (100) and the fixed post (20).

The fixing pin 100 for fixing the head of a patient during medical diagnosis, treatment or surgery includes a pin body 110 formed of a first metal material and one end of which is coupled to the fixing post 20, An intermediate body 120 formed of a material and disposed at the other end of the fin body 110 and a pin tip 130 formed of a second metal material and coupled to the intermediate body 120. The fixing pin 100 may be used in combination with the fixing post 20, but it is not limited thereto and may be used in other devices for fixing the head of a patient for medical diagnosis, treatment, or surgery.

The upper portion of the fixing post 20 may be inclined toward the center of the stationary fixing frame 10 shown in FIG. 1, and the lower portion of the fixing post 20 may have a polygonal columnar shape. Therefore, the thickness of the upper portion of the fixed post 20 may be thicker than the thickness of the lower portion. A fixing pin 100 is fixed to the upper portion of the fixing post 20 and a lower portion of the fixing post 20 is connected to the fixing frame 10. [

A hole (22) for directly engaging with the fixing pin (100) may be formed on the upper portion of the fixing post (20). The hole 22 may be oriented toward the center of the stationary fixed frame 10 or toward a predetermined point on the patient's head. The diameter of the hole 22 may be larger than the diameter of the fixing pin 100 (for example, the diameter of the second cylinder wall 112) by a predetermined size. Accordingly, the fixing pin 100 can be inserted into the fixing post 100 by inserting the fixing pin 100 in one direction of the front or rear of the hole 22.

In the lower portion of the fixing post 20, a height adjusting hole 21 penetrating along the longitudinal direction may be formed to adjust the height of the fixing frame 10 shown in FIG. The height adjusting hole 21 is penetrated by the fixing means 30 shown in FIG. 1, so that the fixing post 20 can be fixed to the stationary fixing frame 10.

The pin body 110 may include a first cylinder wall 111 and a second cylinder wall 112 having different diameters from each other. The second cylinder wall 112 is larger in diameter than the first cylinder wall 111 and each of the first and second cylinder walls 111 and 112 may have a cylindrical space formed therein. One end of the first cylinder wall 111 may be opened to expose the cylindrical space defined by the first cylinder wall 111 toward the intermediate body 120. In the second cylinder wall 112, the cylindrical space defined by the second cylinder wall 112 toward the fixed post 20 is exposed at the other end opposite to the one end connected to the first cylinder wall 111 As shown in Fig.

According to the above-described configuration, the direction opposite to the opening direction in each of the first and second cylinder walls 111 and 112 can be shielded. That is, the central portion of the fin body 110 may be filled with the first metal material without any voids therein. In addition, the length of the cylindrical space defined by the first cylinder wall 111 may be equal to or less than the length of the intermediate body 120.

The intermediate body 120 may be made of a resilient material and may be combined with the first cylinder wall 111. Intermediate 120 may be configured to block heat transfer between pin body 110 and pin tip 130. The intermediate 120 may have a generally cylindrical shape and at least a portion of the intermediate 120 may be inserted into a cylindrical space defined by the first cylinder wall 111. The outer circumferential surface of the intermediate body 120 may be in contact with the inner circumferential surface of the first cylinder wall 111 and the inner circumferential surface of the intermediate body 120 may be in contact with the pin tip 130.

One end of the pin tip 130 is inserted in the open direction of the intermediate body 120 and the other end of the pin tip 130 may have a tapered shape to provide a clamping force at a predetermined point on the patient's head. That is, one end of the pin tip 130 has a cylindrical shape and the other end of the pin tip 130 is tapered so as to reach the skull through the scalp at the target position corresponding to a predetermined point on the patient's head. And may have a tapered shape.

In the case where the insulating material is disposed between the end portion of the pin body 110 (for example, a part of the second cylinder wall 112) and the hole 22 formed in the fixed post 20, The position of the end portion of the pin body 110 can be shifted, and accordingly, the position of the pin tip 130 can be changed. In this case, the size of the position moved in the pin tip 130 may increase in proportion to the amount of change in position between the end of the pin body 110 and the hole 22 multiplied by the length of the pin body 110 .

The pin body 110 is directly coupled to the fixing post 20 without interposing the insulating material between the end of the pin body 110 and the hole 22 of the fixing post 20. In this embodiment, The end portion of the pin body 110 can be substantially prevented from moving in the hole 22 formed in the fixed post 20. [ Accordingly, it is possible to reduce an error between a target position corresponding to a predetermined point on the patient's head and a position where the pin tip 130 is oriented.

In one embodiment, the length of the pin tip 130 may be formed to be significantly shorter than the length of the pin body 110. In other words, the pin body 110 may occupy most of the entire length of the fixing pin 100. Thus, since the pin tip 130 is disposed at a position adjacent to the distal end of the pin body 110, there is less chance of occurrence of a mechanical axial alignment error between the pin tip 130 and the pin body 110.

Therefore, since the pin tip 130 is prevented from moving between the end portion of the pin body 110 and the hole 22 and the occurrence of axial alignment error between the pin tip 130 and the pin body 110 is prevented, Can be prevented from deviating substantially from the target position corresponding to a predetermined point of the head of the patient. Further, the accuracy of the fixing device 1 itself can be improved.

The pin body 110 may be fixed to the fixing post 20 by means of bolts 40. 3, a nut screw 113 is formed on the inner circumferential surface of at least a part of the second cylinder wall 112 of the pin body 110, and the bolt 40 is screwed with a bolt screw (41) and a head (42). Namely, the nut screw 113 of the pin body 110 is engaged with the bolt thread 41 of the bolt 40 to form a bolt / nut joint.

According to one embodiment, the order of joining the pin body 110, the fixing post 20, and the bolt 40 to each other is as follows. First, the second cylinder wall 112 of the pin body 110 is inserted into the hole 22 of the fixed post 20. In this state, the nut screw 113 of the second cylinder wall 112 and the bolt thread 41 of the bolt 40 are engaged. The diameter of the head 42 of the bolt 40 is larger than the diameter of the hole 22 so that the pin body 110 is not separated from the fixing post 20. [

The first metal material constituting the pin body 110 and the second metal material constituting the pin tip 130 may be the same as each other and the fixed post 20 may be made of the first metal material or the second metal material . The first metal material and the second metal material may be a material which is heated to a low degree by an external magnetic field change, and may be a material such as an aluminum alloy.

It is necessary for the intermediate body 120 to have a proper thickness in order to accommodate the pin tip 130 at the same time as interrupting the heat transfer that can be transmitted from the pin body 110 to the pin tip 130. [ Specifically, the intermediate body 120 having a sleeve shape may have a thickness between approximately 1.5 mm and 2.5 mm. After the pin tip 130 is inserted into the intermediate body 120, the intermediate body 120 is pressed between the pin tip 130 and the pin body 110, and in this state, And may have a thickness of 2 mm.

The heat transmitted to the pin tip 130 by the intermediate body 120 can be blocked even if the fin body 110 is heated by the change of the external magnetic field. Therefore, even if the patient is inserted into the MRI apparatus while the fixing device 1 shown in FIG. 1 is mounted on the patient's head, the pin tip 130 is heated, It is possible to prevent the phenomenon of feeling uncomfortable.

FIG. 4 is an exploded perspective view showing an exploded view of the fixing pin 200 according to an embodiment of the present disclosure, FIG. 5 is an exploded perspective view showing an exploded view of the fixing pin 200 in a direction different from FIG. 4, 6 is a cross-sectional view showing a combined state of the fixing pin 200 shown in FIG. A duplicate description of components having the same names as the components described in Figs. 1 to 3 is omitted.

The fixing pin 200 according to an embodiment of the present disclosure may correspond to an embodiment in which the intermediate body 120 of the fixing pin 100 shown in FIGS. 1 to 3 is replaced with another type of intermediate body 220. The fixing pin 200 may include a pin body 210, an intermediate body 220, and a pin tip 230. The pin tip 230 may have the same shape as the pin tip 130 shown in Figs.

The intermediate body 220 may include a first cap 221 composed of a cylindrical wall and a second cap 222 connected to the first cap 221. The first and second caps 221 and 222 may have the same shape as, for example, a cup with one open side. The diameter of the first cap 221 may be greater than the diameter of the second cap 222 so that the first cap 221 may surround the second cap 222. 6, the diameter of the first cap 221 is larger than the diameter of the pin body 210, so that the end of the pin body 210 can be fitted into the first cap 221. The diameter of the second cap 222 is smaller than the diameter of the pin body 210 and larger than the diameter of the pin tip 230 so that the pin tip 230 can be inserted into the second cap 222 .

The first cap 221 and the second cap 222 may be opened opposite to each other. The second cap 222 can receive the pin tip 230 in the direction in which the second cap 222 is open and the first cap 221 can receive the pin 230 in the direction in which the first cap 221 is open, The end of the body 210 can be received. Referring to FIG. 5, the second cap 222 may form a receiving space 227 configured to receive the pin tip 230.

Referring to FIG. 4, an annular space 226 may be formed between the first cap 221 and the second cap 222. The annular space 226 may be defined as a ring-shaped space formed between the inner circumferential surface of the first cap 221 and the outer circumferential surface of the second cap 222. The pin body 210 also has a first cylinder wall 211 defining a cylindrical space 212 and the end of the first cylinder wall 211 can be fitted in the annular space 226.

The intermediate 220 may include a first plate 223 and a second plate 224. Referring to FIG. 6, the first plate 223 may connect the end of the first cap 221 and the end of the second cap 222 toward the pin tip 230. The second plate 224 can close the end of the second cap 222 that is opposite to the first plate 223, that is, toward the pin body 210. The first and second caps 221 and 222 opened in the opposite direction by the first plate 223 can be connected to each other.

The second cap 222 and the second plate 224 can be inserted into the cylindrical space 212 defined by the first cylinder wall 211. 6, the inner surface of the first plate 223 can be in contact with the end of the first cylinder wall 211, so that the first plate 223 can move the entire intermediate body 220 to the first cylinder wall 211 from entering into the cylindrical space 212.

The pin tip 230 can be inserted into the receiving space 227 formed by the second cap 222 in the direction in which the second cap 222 is opened, i.e., the direction in which the first plate 223 is disposed. The second cap 222 engages the pin tip 230 with respect to the pin body 210 and prevents direct contact between the pin body 210 and the pin tip 230, The heat transfer between the pin tips 230 can be reduced.

A groove 225 may be formed on the outer circumferential surface of the second cap 222. The groove 225 may be formed to pass between both ends of the second cap 222. That is, the groove 225 may be formed along the longitudinal direction of the second cap 222 between the first plate 223 and the second plate 224. A plurality of grooves 225 may be disposed along the circumferential direction of the second cap 222. The plurality of grooves 225 may be disposed symmetrically with respect to the center of the second cap 222. The groove 225 may allow the air to escape when the intermediate body 220 is coupled to the first cylinder wall 211 to easily couple the intermediate body 220 to the pin body 210.

Referring to FIG. 5, at least one protrusion 213 may be formed on the inner circumferential surface of the first cylinder wall 211. The projecting portion 213 may protrude to be inserted into the groove 225 and may extend in the longitudinal direction of the first cylinder wall 211. The protrusions 213 may be provided in the same number as the grooves 225. In the process of coupling the intermediate body 220 to the pin body 210, the protrusion 213 can be fitted into the groove 225 while sliding. The projecting portion 213 can guide, for example, the direction in which the intermediate member 220 is inserted. The intermediate body 220 can be prevented from rotating in the circumferential direction with respect to the pin body 210 when the groove 225 and the protrusion 213 are engaged.

The first plate 223 may have a first opening 223a and a second opening 223b. The first opening 223a may be formed at a position where the groove 225 is disposed and may communicate with the groove 225. The first openings 223a may be formed in the same number as the grooves 225. Further, the second opening 223b may be formed at a position where the accommodation space 227 is disposed, and may communicate with the accommodation space 227. [ The pin tip 230 is inserted into the receiving space 227 through the second opening 223b and the heat generated from the pin body 210 through the first opening 223a is discharged to the outside of the intermediate body 220 .

FIG. 7 is a perspective view showing a disassembled state of the fixing pin 300 according to an embodiment of the present disclosure, and FIG. 8 is a sectional view showing an assembled state of the fixing pin 300 shown in FIG. Redundant description of the components having the same names as the components described in Figs. 1 to 6 will be omitted.

A fixation pin 300 for securing a patient's head during a medical diagnosis, treatment or surgery according to one embodiment of the present disclosure includes a pin body 310, an intermediate body 320 inserted into the pin body 310, And a pin tip 330 inserted into the intermediate body 320 at the opposite side of the intermediate body 310. Intermediate 320 may have a similar configuration to second cap 222 where first plate 223 and first cap 221 are removed from intermediate 220 according to one embodiment of the present disclosure shown in FIG. Lt; / RTI > That is, the intermediate body 320 according to one embodiment of the present disclosure (i.e., a configuration having a shape similar to the second cap 222 according to the embodiment shown in FIG. 4) So that heat transfer between the pin tip 330 and the pin body 310 can be blocked.

A groove 325 may be formed on the outer circumferential surface 326 of the intermediate body 320 and a protrusion 313 configured to engage with the groove 325 may be formed on the inner circumferential surface of the first cylinder 311 of the pin body 310 . The first cylinder 311 may define a cylindrical space 312 and the intermediate 320 may be inserted into the cylindrical space 312. The pin tip 330 may be inserted into the receiving space 327 formed by the intermediate 320.

In the receiving space 327 of the intermediate body 320, an insert 328 having a smaller diameter than the intermediate body 320 may be disposed. The insert 328 may be made of a material that is more deformable than the intermediate 320 and may be compressed toward the intermediate 320 upon insertion of the pin tip 330. The insert 328 is made of a material having a lower thermal conductivity than the intermediate 320 so as to improve thermal barrier property between the pin tip 330 and the pin body 310. The insert 328 may include a bottom plate 329 in contact with the second plate 324 of the intermediate body 320. 8, the pin tip 330 may be surrounded by an insert 328 and the insert 328 may be surrounded by an intermediate 320.

The configurations of the grooves 325 and the inserts 328 are not limited to those shown in FIGS. 7 and 8, but may be applied to other types of intermediate bodies. For example, the configuration for grooves 325 or inserts 328 shown in FIG. 7 may include an intermediate 120 according to one embodiment of the present disclosure, an intermediate 220 according to one embodiment of the present disclosure, The present invention can be applied to any one of the intermediate 420 according to one embodiment of the present invention and the intermediate 520 according to one embodiment of the present disclosure.

FIG. 9 is an exploded perspective view showing a disassembled state of the fixing pin 400 according to the embodiment of the present disclosure, FIG. 10 is a perspective view showing a state of the intermediate body 420 shown in FIG. 9, FIG. 4 is a perspective view showing a pin body 410 shown in FIG. Redundant description of the components having the same names as the components described in Figs. 1 to 6 will be omitted.

The fixation pin 400 for securing the patient's head during medical diagnosis, treatment or surgery according to one embodiment of the present disclosure includes a pin body 410, an intermediate 420 inserted into the pin body 410, And a pin tip 430 inserted into the intermediate body 420 at the opposite side of the intermediate body 410. Among them, the pin tip 430 may have the same shape as the pin tip 130 described in FIGS. 1 to 3 above.

The intermediate body 420 may have a sleeve shape that is open in one direction. Further, the intermediate 420 may be formed of an elastic material. The intermediate body 420 may include a first portion 421 and a second portion 422 having a larger sectional diameter than the first portion 421.

The second portion 422 of the intermediate body 420 may have a protrusion 423 protruding radially outward at least on a part of the outer circumferential surface thereof. The protrusions 423 may have a ring shape connected to one another as a whole. The protrusion 423 can improve the coupling with the pin body 410, and the specific structure will be described in more detail below.

The pin body 410 has a first cylinder wall 411 for receiving an intermediate body and a jaw 412 protruding in the center direction may be formed on the inner circumferential surface of at least a part of the first cylinder wall 411. The jaw 412 may be formed at the end of the first cylinder wall 411. The jaw 412 may be formed along a plane perpendicular to the longitudinal direction of the first cylinder wall 411.

A groove 413 having a shape corresponding to the protruding portion 423 may be formed on the inner peripheral surface of the pin body 410. The groove 413 may be disposed directly behind the jaw 412. The grooves 413 may have a ring shape corresponding to the shape of the projections 423 having a ring shape.

12 is a sectional view showing a state where the fixing pin 400 shown in FIG. 9 is coupled. The process of assembling the fixing pin 400 is as follows.

First, the first portion 421 of the intermediate body 420 is inserted into a cylindrical space formed by the first cylinder wall 411 of the pin body 410. The protruding portion 423 formed in the second portion 422 of the intermediate body 420 is compressed in the center direction by the jaw 412 so that the second portion 422 is moved into the cylindrical space of the first cylinder wall 411 . The protrusion 423 over the jaw 412 is seated on the groove 413 and the position of the intermediate body 420 is fixed. Next, the pin tip 430 is inserted into the space formed by the intermediate body 420.

The protrusion 423 is seated in the groove 413 after the fixing pin 400 is assembled so that even if the intermediate body 420 is pulled out by an external force, Can be firmly fixed. In addition, the position of the pin tip 430 can also be firmly fixed in the state of being coupled to the intermediate 420.

FIG. 13 is an exploded perspective view showing a fixing pin 500 and a fixing column 50 according to an embodiment of the present disclosure. FIG. 14 is a perspective view illustrating a fixing pin 500 and a fixing column 50 according to an embodiment of the present disclosure. Fig. According to one embodiment of the present disclosure, the fixing pin 500 can be coupled to the fixing post 50 without any other means such as the bolt 40 shown in Fig.

The pin tip 530 and the intermediate body 520 of the fixing pin 500 according to an embodiment of the present disclosure have the same shapes as the pin tip 130 and the intermediate body 120 shown in Figs. . The pin body 510 may have a second cylinder wall 512 having a diameter larger than that of the first cylinder wall 511 and the first cylinder wall 511, 51 and a hole 52 to be penetrated by the pin body 510 can be formed.

A threaded portion 512a may be formed on the outer circumferential surface of at least a part of the second cylinder wall 512. A tapping 53 may be formed on the inner circumferential surface of the hole 52 so that the inner circumferential surface of the hole 52 can be engaged with the screw portion 512a.

Therefore, the pin body 510 can be directly engaged with the hole 52 of the fixing post 50 without any other means, so that the coupling between the fixing post 50 and the fixing pin 500 is increased. The threaded portion 512a of the pin body 510 functions as a bolt and the tapping portion 53 of the fixed post 50 serves as a nut, so that the threaded portion 512a can be completely engaged with each other without a gap. Therefore, the position error between the pin body 510 and the fixing post 50 can be eliminated.

According to various embodiments of the present disclosure, since the pin body and the fixing post are directly coupled, it is possible to eliminate the position error occurring at the connection point between the fixing post and the pin body, and by arranging the intermediate body between the pin body and the pin tip Even if the fixed column is heated, the heat transmitted to the pin tip can be blocked by the intermediate.

Although the technical idea of the present disclosure has been described above by way of some embodiments and examples shown in the accompanying drawings, it is to be understood that the present invention is not limited to the above- It should be understood that various substitutions, changes, and alterations can be made therein without departing from the scope of the invention. It is also to be understood that such substitutions, modifications and variations are intended to be included within the scope of the appended claims.

Claims (17)

A fixation pin coupled to a fixation post for securing a patient ' s head during medical diagnosis, treatment or surgery, A pin body formed of a first metal material and having one end coupled to the fixed post; A pin tip formed of a second metallic material and disposed at the other end of the pin body; And And an intermediate body formed of a non-metallic material and at least a part of which is disposed between the pin body and the pin tip. The method according to claim 1, Said pin tip being coupled to said pin body by said intermediate, And the length of the pin tip is shorter than the length of the pin body. The method according to claim 1, Wherein the pin tip or the intermediate body is replaceable with respect to the pin body. The method according to claim 1, Said intermediate comprising a first cap and a second cap connected to said first cap, Wherein the first cap and the second cap are opposed to each other. 5. The method of claim 4, An annular space is formed between the first cap and the second cap, And an end of the pin body is fitted into the annular space. 5. The method of claim 4, A cylinder wall defining a cylindrical space is formed at an end of the pin body, And the second cap is inserted into the cylindrical space. 5. The method of claim 4, The intermediate may be, A first plate connecting the first cap and the second cap; And And a second plate disposed on the opposite side of the second cap in a direction in which the second cap is opened and closing one end of the second cap. The method according to claim 6, At least one groove formed to pass between both ends of the second cap is formed on an outer circumferential surface of the second cap, Wherein at least one protrusion protruded to be inserted into the groove is formed on an inner circumferential surface of the cylinder wall. The method according to claim 1, Further comprising an insert disposed between the pin tip and the intermediate body and being compressed by the pin tip. A retaining pin for fastening a patient's head during a medical diagnosis, treatment or surgery coupled to a fixed post, A pin body formed of a first metal material and having one end coupled to the fixed post; An intermediate member formed of a non-metallic material and at least a part of which is inserted into the other end of the pin body; And And a pin tip formed of a second metallic material and inserted into the intermediate body on the opposite side of the pin body. 11. The method of claim 10, Wherein the intermediate body has a sleeve shape with one side opened. 11. The method of claim 10, The intermediate is formed of an elastic material, Wherein the intermediate body comprises a protrusion formed on an outer peripheral surface of at least a part of the intermediate body. 13. The method of claim 12, The pin body having a cylinder wall for receiving the intermediate body, And a jaw protruding in the center direction is formed on an inner peripheral surface of at least a part of the cylinder wall. 14. The method of claim 13, The protrusion has a ring shape, Wherein the jaw has a ring shape corresponding to the ring shape. A fastening device for fixing a head of a patient during medical diagnosis, treatment or surgery, A stationary stationary frame surrounding at least a portion of the head; A plurality of fixed columns disposed in the frame; And And a plurality of fixing pins, one end of which is directly fixed to each of the plurality of fixing posts, the tip is disposed at the other end, and the one end is insulated from the other end. 16. The method of claim 15, Wherein the fixing pin includes: A pin body directly connected to the fixed post; At least a portion of which is inserted into the pin body; And Wherein at least a portion of the pin tip is inserted into the intermediate. 17. The method of claim 16, Holes for fixing the fixing pins are formed on the respective fixing pillars, Wherein the fixing pin is inserted into the hole and is engageable with the fixing post at a position earlier than the pin main body.

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