Operation support

Abstract

The utility model discloses an operation support which comprises a support assembly, a movable cranial nail, two fixed cranial nails, a rotating arm and a locking assembly and is used for being connected with an operation bed, and the movable cranial nail is elastically installed on the support assembly through an adjusting assembly and can move front and back through the adjusting assembly. The two fixed cranial nails and the movable cranial nail are distributed oppositely and triangularly, the rotating arm is rotationally installed on the support assembly, the two fixed cranial nails are installed on the rotating arm, and the locking assembly is arranged between the rotating arm and the support assembly and used for locking the rotating arm. According to the utility model, the movable cranial nails are prevented from rotating and contacting with the head, the magnitude of pressure can be displayed in real time, the damage to tissues is reduced, the positioning angles of the two fixed cranial nails are adjustable, and the applicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a surgical support. Background Art

[0002] In neurosurgery, head frame systems such as the Mayfield head frame are often used to maintain the surgical position of the head and neck and adjust the intraoperative axis and posture. Especially when the patient is in the prone position, the Mayfield head frame can effectively fix the position of the head and stabilize the head in the air. Its advantages include convenient adjustment of the cervical spine position, avoidance of facial skin compression, and easy observation of the patient's intraoperative condition and anesthesia management, thereby ensuring the safety and smooth progress of the operation. The three nails on the head frame are distributed in an isosceles triangle, and the three nails simultaneously pressurize the head to achieve a stable fixation. When fixing, rotate the single nail side pressure knob to the ideal pressure, 60lb for adults and 40lb for children, which can be adjusted according to actual conditions.

[0003] When the head of an elderly person or a child is currently positioned by applying pressure through a skull pin, the head pin needs to be inserted into the skull during fixation, which may cause skull fractures or even epidural hematomas when used on the elderly and children, and has poor safety. Summary of the invention

[0004] In view of the above problems existing in the existing head frame, the present invention aims to provide a surgical support with high safety, convenient adjustment and high applicability.

[0005] The specific technical solutions are as follows:

[0006] A surgical stent, comprising:

[0007] A bracket assembly, used for connecting with an operating table;

[0008] A movable cranial pin, which is elastically mounted on the support assembly through an adjusting assembly and can be moved forward and backward through the adjusting assembly;

[0009] Two fixed skull pins, the two fixed skull pins and the movable skull pin are distributed opposite to each other and in a triangular distribution;

[0010] A rotating arm, the rotating arm is rotatably mounted on the bracket assembly, and the two fixed skull pins are mounted on the rotating arm;

[0011] A locking assembly is disposed between the rotating arm and the bracket assembly and is used to lock the rotating arm.

[0012] As a further improvement and optimization of the present solution, the adjustment assembly includes an adjustment knob, which is threadedly mounted on the bracket assembly, and the movable skull pin is elastically mounted on the adjustment knob. The adjustment knob is rotated to make the adjustment knob move axially, thereby moving the movable skull pin forward and backward.

[0013] As a further improvement and optimization of this solution, it also includes: a skull pin base and a spring, the skull pin base is rotatably mounted on the adjusting knob and can slide back and forth, the movable skull pin is mounted on the skull pin base, and the spring is arranged between the skull pin base and the adjusting knob.

[0014] As a further improvement and optimization of the present solution, a sliding cavity is provided inside the adjusting knob, one end of the skull pin base can be slidably arranged in the sliding cavity, and the other end thereof passes through one end of the adjusting knob and is installed with the movable skull pin, and the spring is arranged in the sliding cavity, one end of the spring abuts against one side of the sliding cavity, and the other end abuts against the skull pin base.

[0015] As a further improvement and optimization of the present solution, the other end of the adjusting knob is provided with an opening, and a screw plug is threadedly installed at the opening of the adjusting knob, the sliding cavity is formed in the adjusting knob between the screw plug and one end of the adjusting knob, and the spring is arranged between the screw plug and the skull pin base.

[0016] As a further improvement and optimization of this solution, the outer wall of the skull pin base is provided with scale markings along the front-to-back direction.

[0017] The bracket assembly is provided with a mounting hole, and the adjusting knob is threadedly mounted in the mounting hole.

[0018] As a further improvement and optimization of this solution, the locking assembly includes:

[0019] A locking nut, the locking nut is detachably connected to the rotating arm, and a first tooth surface is provided on a side of the locking nut away from the rotating arm;

[0020] A locking knob, the locking knob being rotatably mounted on the bracket assembly;

[0021] A locking column, wherein the locking column is arranged between the locking nut and the locking knob, and can be slidably installed in the bracket assembly along the axial direction, and one end of the locking column is threadedly installed in the locking knob, and the other end is annularly provided with a second tooth surface matching the first tooth surface, and the locking column is axially moved by rotating the locking knob, and when the second tooth surface is meshed with the first tooth surface, the rotation angle of the rotating arm is locked.

[0022] The locking nut is connected to the rotating arm via bolts.

[0023] As a further improvement and optimization of this solution, the bracket assembly has a mounting opening, the rotating arm is rotatably mounted on one side of the mounting opening, the locking knob is rotatably mounted on the other side of the mounting opening, and the locking column is slidably mounted in the mounting opening;

[0024] Wherein, a first limiting member and a second limiting member are provided between the bracket assembly and the locking knob, the first limiting member is used for axially limiting the locking knob, and the second limiting member is used for limiting the rotation angle of the locking knob.

[0025] As a further improvement and optimization of the present solution, the first limiting member includes an annular limiting groove arranged on the outer wall of the locking knob, at least one limiting hole and at least one limiting screw arranged on the bracket assembly and connected to the mounting port, the limiting screw being threadedly installed in the limiting hole, extending into the annular limiting groove, and forming an axial limiting fit with the annular limiting groove for the locking column.

[0026] As a further improvement and optimization of the present scheme, the second limiting member includes at least one arc-shaped limiting groove arranged on one side of the locking knob and at least one limiting column connected to the bracket assembly, the limiting column extends into the arc-shaped limiting groove and forms a circumferential sliding fit with the arc-shaped limiting groove, and when the limiting column is limitedly fitted with the side wall of one end of the arc-shaped limiting groove, the first tooth surface is disengaged from the second tooth surface, and when the limiting column is limitedly fitted with the side wall of the other end of the arc-shaped limiting groove, the first tooth surface is meshed with the second tooth surface.

[0027] Compared with the prior art, the above technical solution has the following positive effects:

[0028] (1) In the present invention, when the movable skull pin is used to apply pressure to the skull for positioning, the movable skull pin is installed in an elastic manner to avoid hard pressure contact between the movable skull pin and the skull, thereby reducing damage to tissues.

[0029] (2) In the utility model, the pressure positioning angle of the two fixed skull pins on the skull can be adjusted by rotating the rotating arm, and the positioning angle of the two fixed skull pins can be locked again by the locking assembly, which has high applicability.

[0030] (3) In the present invention, when the movable skull pin is adjusted forward and backward by rotating the adjusting knob, since the skull pin base and the adjusting knob are connected in a rotating manner, when the adjusting knob is rotated to move axially and the skull pin base is pushed forward and backward by the spring, the skull pin base will not rotate with the adjusting knob, thereby preventing the movable skull pin from moving forward and backward in a rotational manner, further reducing damage to the skull tissue.

[0031] (4) The outer wall of the base of the skull pin of the utility model is provided with scale marks along the front-to-back direction, which can display the magnitude of the applied pressure in real time when the skull is pressurized and positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of a surgical stent of the utility model;

[0033] Figure 2 This is a cross-sectional view of a surgical stent of the utility model;

[0034] Figure 3 This is an enlarged schematic diagram of point A of a surgical stent of the utility model;

[0035] Figure 4 This is an enlarged schematic diagram of point B of a surgical stent of the utility model;

[0036] Figure 5 It is an exploded schematic diagram of a locking assembly of a surgical stent according to the utility model;

[0037] In the accompanying drawings: 1. bracket assembly; 2. movable skull pin; 3. fixed skull pin; 4. rotating arm; 5. locking assembly; 6. adjustment assembly; 11. cross bar; 12. fixed rod; 13. mounting port; 14. limiting hole; 41. base; 51. locking knob; 52. locking nut; 53. locking column; 54. limiting column; 55. limiting screw; 511. arc-shaped limiting groove; 512. annular limiting groove; 521. first tooth surface; 531. second tooth surface; 61. adjusting knob; 62. spring; 63. skull pin base; 64. spring plunger; 65. screw plug; 631. scale mark. DETAILED DESCRIPTION

[0038] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Figure 1 This is a schematic diagram of the structure of a surgical stent according to the utility model. Figure 2 This is a cross-sectional view of a surgical stent according to the utility model. Figure 3 This is an enlarged schematic diagram of point A of a surgical stent of the utility model. Figure 4 This is an enlarged schematic diagram of point B of a surgical stent of the utility model. Figure 5 FIG. 1 is an exploded schematic diagram of a locking assembly of a surgical stent according to the utility model, as shown in FIG. Figure 1-5 As shown, a surgical stand of a preferred embodiment is shown, including a stand assembly 1, a movable skull pin 2, two fixed skull pins 3, a rotating arm 4 and a locking assembly 5, which is used to be connected to an operating table. The movable skull pin 2 is elastically mounted on the stand assembly 1 through an adjusting assembly 6, and can be moved forward and backward through the adjusting assembly 6. The two fixed skull pins 3 are distributed relative to the movable skull pin 2 and are distributed in a triangular shape. The rotating arm 4 is rotatably mounted on the stand assembly 1, and the two fixed skull pins 3 are mounted on the rotating arm 4. The locking assembly 5 is arranged between the rotating arm 4 and the stand assembly 1, and is used to lock the rotating arm 4.

[0042] In this embodiment, one side of the skull is pressurized and positioned by two fixed skull pins 3, and the movable skull pin 2 is adjusted forward and backward by the adjustment component 6 to pressurize and position the other side of the skull.

[0043] In this embodiment, when the movable skull pin 2 applies pressure to the skull for positioning, since the movable skull pin 2 is installed in an elastic manner, the movable skull pin 2 is prevented from making hard pressure contact with the skull, thereby reducing damage to tissues.

[0044] In this embodiment, the pressure positioning angle of the two fixed skull pins 3 on the skull can be adjusted by rotating the rotating arm 4, and the positioning angle of the two fixed skull pins 3 can be locked again by the locking assembly 5, which has high applicability.

[0045] Furthermore, as a preferred embodiment, the adjustment assembly 6 includes an adjustment knob 61, which is threadedly mounted on the bracket assembly 1, and the movable skull pin 2 is elastically mounted on the adjustment knob 61. By rotating the adjustment knob 61, the adjustment knob 61 is moved axially, thereby causing the movable skull pin 2 to move forward and backward.

[0046] Furthermore, as a preferred embodiment, it also includes: a skull pin base 63 and a spring 62, the skull pin base 63 is rotatably mounted on the adjusting knob 61 and can slide back and forth, the movable skull pin 2 is mounted on the skull pin base 63, and the spring 62 is arranged between the skull pin base 63 and the adjusting knob 61.

[0047] In the present embodiment, when the movable skull pin 2 is adjusted forward and backward by rotating the adjusting knob 61, since the skull pin base 63 and the adjusting rotation are connected in a rotating manner, when the adjusting knob 61 is rotated to move axially and the skull pin base 63 is pushed forward and backward by the spring 62, the skull pin base 63 will not rotate with the adjusting knob 61, thereby preventing the movable skull pin 2 from moving forward and backward in a rotational manner, further reducing damage to the skull tissue.

[0048] Furthermore, as a preferred embodiment, the adjusting knob 61 has a sliding cavity, one end of the skull pin base 63 can be slidably arranged in the sliding cavity, and the other end thereof passes through one end of the adjusting knob 61 and is installed with the movable skull pin 2, and the spring 62 is arranged in the sliding cavity, one end of the spring 62 is against one side of the sliding cavity, and the other end is against the skull pin base 63.

[0049] Furthermore, as a preferred embodiment, in order to facilitate the disassembly and assembly of the skull pin base 63 and the spring 62, the other end of the adjusting knob 61 is opened, and a screw plug 65 is threadedly installed at the opening of the adjusting knob 61. A sliding cavity is formed in the adjusting knob 61 between the screw plug 65 and one end of the adjusting knob 61, and the spring 62 is arranged between the screw plug 65 and the skull pin base 63.

[0050] Furthermore, as a preferred embodiment, the outer wall of the skull pin base 63 is provided with scale marks 631 along the front-to-back direction. When the movable skull pin 2 is pressurized to position the skull, the scale marks 631 can reflect the locking pressure of the skull pin, so as to facilitate pressurization and positioning of the heads of different patient groups.

[0051] The bracket assembly 1 has a mounting hole, and the adjusting knob 61 is threadedly mounted in the mounting hole.

[0052] Furthermore, as a preferred embodiment, the locking assembly 5 includes a locking nut 52, a locking knob 51 and a locking column 53. The locking nut 52 is detachably connected to the rotating arm 4, and a first tooth surface 521 is provided on the side of the locking nut 52 away from the rotating arm 4. The locking knob 51 is rotatably mounted on the bracket assembly 1. The locking column 53 is arranged between the locking nut 52 and the locking knob 51, and can be axially slidably installed in the bracket assembly 1. One end of the locking column 53 is threadedly installed in the locking knob 51, and the other end is provided with a second tooth surface 531 matching the first tooth surface 521. The locking knob 51 is rotated to make the locking column move axially, and when the second tooth surface 531 is engaged with the first tooth surface 521, the rotation angle of the rotating arm 4 is locked.

[0053] Preferably, the locking nut 52 is connected to the rotating arm 4 via bolts.

[0054] Further, as a preferred embodiment, the bracket assembly 1 has a mounting opening 13, the rotating arm 4 is rotatably mounted on one side of the mounting opening 13, the locking knob 51 is rotatably mounted on the other side of the mounting opening 13, and the locking column 53 is slidably mounted in the mounting opening 13;

[0055] Among them, a first limiter and a second limiter are provided between the bracket assembly 1 and the locking knob 51 . The first limiter is used to limit the axial position of the locking knob 51 , and the second limiter is used to limit the rotation angle of the locking knob 51 .

[0056] Furthermore, as a preferred embodiment, the first limiting member includes an annular limiting groove 512 arranged on the outer wall of the locking knob 51, at least one limiting hole 14 arranged on the bracket assembly 1 and connected to the mounting port 13, and at least one limiting screw 55. The limiting screw 55 is threadedly installed in the limiting hole 14, and extends into the annular limiting groove 512, and forms an axial limiting cooperation with the annular limiting groove 512 for the locking column 53. When the locking knob 51 is rotated, the limiting screw 55 slides circumferentially in the annular limiting groove 512. Since the limiting screw 55 is limited by the two side walls of the annular limiting groove 512, when the locking knob 51 is rotated, the locking column 53 slides axially under the threaded installation cooperation with the locking knob 51, so that the first tooth surface 521 is engaged or disengaged with the second tooth surface 531.

[0057] Furthermore, as a preferred embodiment, the second limiting member includes at least one arc-shaped limiting groove 511 provided on one side of the locking knob 51 and at least one limiting column 54 connected to the bracket assembly 1, the limiting column 54 extends into the arc-shaped limiting groove 511, and forms a circumferential sliding fit with the arc-shaped limiting groove 511, in order to facilitate manual rotation of the locking knob 51 to more accurately lock or unlock the two fixed skull pins 3 at the positioning angle, when the limiting column 54 is limitedly matched with the side wall of one end of the arc-shaped limiting groove 511, the first tooth surface 521 is disengaged from the second tooth surface 531, and when the limiting column 54 is limitedly matched with the side wall of the other end of the arc-shaped limiting groove 511, the first tooth surface 521 is meshed with the second tooth surface 531.

[0058] The utility model also has the following implementation methods based on the above:

[0059] In a further embodiment of the utility model, in order to facilitate the disassembly and assembly of the movable skull pin 2 and the two fixed skull pins 3, the skull pin base 63 has a first connecting hole for installing the movable skull pin 2, and the bracket assembly 1 has two second connecting holes for installing the two fixed skull pins 3 respectively. The side walls of the movable skull pin 2 and each fixed skull pin 3 are radially penetrated by locking holes, and a spring plunger 64 is threadedly installed in each locking hole. One end of the spring plunger 64 has a resiliently connected ball head, and the ball head elastically contacts the inner wall of the first connecting hole / the second connecting hole to lock the movable skull pin 2 / the fixed skull pin 3 into the first connecting hole / the second connecting hole.

[0060] Specifically, the spring plunger 64 is an existing standard component, and its principle and structure are not described in detail herein.

[0061] In a further embodiment of the present invention, a detachable base 41 is provided on one side of the rotating arm 4 , and the base 41 is connected to the locking nut 52 via a bolt. Furthermore, the base 41 is connected to the rotating arm 4 via a screw and nut structure.

[0062] In a further embodiment of the present invention, the support assembly 1 has at least two fixing rods 12 for inserting into holes on the operating bed to connect the support assembly 1 to the operating bed.

[0063] More preferably, in order to facilitate the connection between the support assembly 1 and the operating bed, the support assembly 1 has a cross bar 11, in which a fixed rod 12 is fixed to one side of the cross bar 11, and the other fixed rod 12 can be slidably installed on the cross bar 11 along the axial direction of the cross bar 11. The distance between the two fixed rods 12 can be adjusted by sliding the other fixed rod 12 to meet the distance between different hole positions on the operating bed, and the applicability is high.

[0064] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A surgical stent, characterized in that: include: A bracket assembly, used for connecting with an operating table; A movable cranial pin, which is elastically mounted on the support assembly through an adjusting assembly and can be moved forward and backward through the adjusting assembly; Two fixed skull pins, the two fixed skull pins and the movable skull pin are distributed opposite to each other and in a triangular distribution; A rotating arm, the rotating arm is rotatably mounted on the bracket assembly, and the two fixed skull pins are mounted on the rotating arm; A locking assembly is disposed between the rotating arm and the bracket assembly and is used to lock the rotating arm.

2. The surgical stent according to claim 1, characterized in that: The adjusting assembly comprises an adjusting knob, which is threadedly mounted on the bracket assembly. The movable skull pin is elastically mounted on the adjusting knob. The adjusting knob is rotated to make the adjusting knob move axially, thereby making the movable skull pin move forward and backward.

3. The surgical stent according to claim 2, characterized in that: Also includes: A skull pin base and a spring, wherein the skull pin base is rotatably mounted on the adjusting knob and can slide back and forth, the movable skull pin is mounted on the skull pin base, and the spring is arranged between the skull pin base and the adjusting knob.

4. The surgical stent according to claim 3, characterized in that: The adjusting knob has a sliding cavity inside, one end of the skull pin base is slidably arranged in the sliding cavity, and the other end thereof passes through one end of the adjusting knob and is installed with the movable skull pin, and the spring is arranged in the sliding cavity, one end of the spring abuts against one side of the sliding cavity, and the other end abuts against the skull pin base.

5. The surgical stent according to claim 4, characterized in that: The other end of the adjusting knob is open, and a screw plug is threadedly installed at the opening of the adjusting knob. The sliding cavity is formed in the adjusting knob between the screw plug and one end of the adjusting knob, and the spring is arranged between the screw plug and the skull pin base.

6. The surgical stent according to claim 4, characterized in that: The outer wall of the skull pin base is provided with scale marks along the front-to-back direction.

7. The surgical stent according to claim 1, characterized in that: The locking assembly comprises: A locking nut, the locking nut is detachably connected to the rotating arm, and a first tooth surface is provided on a side of the locking nut away from the rotating arm; A locking knob, the locking knob being rotatably mounted on the bracket assembly; A locking column, wherein the locking column is arranged between the locking nut and the locking knob, and can be slidably installed in the bracket assembly along the axial direction, and one end of the locking column is threadedly installed in the locking knob, and the other end is annularly provided with a second tooth surface matching the first tooth surface, and the locking column is axially moved by rotating the locking knob, and when the second tooth surface is meshed with the first tooth surface, the rotation angle of the rotating arm is locked.

8. The surgical stent according to claim 7, characterized in that: The bracket assembly has a mounting opening, the rotating arm is rotatably mounted on one side of the mounting opening, the locking knob is rotatably mounted on the other side of the mounting opening, and the locking column is slidably mounted in the mounting opening; Wherein, a first limiting member and a second limiting member are provided between the bracket assembly and the locking knob, the first limiting member is used for axially limiting the locking knob, and the second limiting member is used for limiting the rotation angle of the locking knob.

9. The surgical stent according to claim 8, characterized in that: The first limiting member includes an annular limiting groove arranged in an annular manner on the outer wall of the locking knob, at least one limiting hole arranged on the bracket assembly and connected to the mounting port, and at least one limiting screw. The limiting screw is threadedly installed in the limiting hole, and extends into the annular limiting groove, and forms an axial limiting fit with the annular limiting groove for the locking column.

10. The surgical stent according to claim 8, characterized in that: The second limiting member includes at least one arc-shaped limiting groove arranged on one side of the locking knob and at least one limiting column connected to the bracket assembly, the limiting column extends into the arc-shaped limiting groove and forms a circumferential sliding fit with the arc-shaped limiting groove, and when the limiting column is limitedly fitted with the side wall of one end of the arc-shaped limiting groove, the first tooth surface is disengaged from the second tooth surface, and when the limiting column is limitedly fitted with the side wall of the other end of the arc-shaped limiting groove, the first tooth surface is meshed with the second tooth surface.

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