CN217525239U

CN217525239U - Cervical vertebra retractor for neurosurgery operation

Info

Publication number: CN217525239U
Application number: CN202221239300.1U
Authority: CN
Inventors: 程涛
Original assignee: Shandong Kangling Medical Equipment Co ltd
Current assignee: Shandong Kangling Medical Equipment Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-10-04
Anticipated expiration: 2032-05-23

Abstract

The utility model relates to a cervical vertebra retractor for neurosurgery. Comprises a support rod, a fixed rod and a movable rod; the support rod is provided with a scale mark identification part with brightness; the upper end of the movable rod is sleeved with the support rod and can keep the relative movement of the movable rod and the support rod through a driving structure; the movable rod and the fixed rod have the same structure and respectively comprise a first connecting part and a second connecting part, and an included angle between the first connecting part and the second connecting part is 145-165 degrees; the bottom end of the second connecting part is provided with a fixing hole and a nail rod; supporting blade structures are arranged on the second connecting parts of the movable rod and the fixed rod, and the two supporting blade structures are symmetrically arranged relative to the supporting rod; the blade supporting structure comprises a telescopic rod and blades; the blades are of arc convex surface structures; one end of the telescopic rod is connected with the second connecting part, and the other end of the telescopic rod is connected with the blade. The utility model discloses a can lead out soft tissue all around simultaneously at the operation in-process, guaranteed about the strength uniformity that the blade propped open the soft tissue, improved the security of operation field of vision space and operation.

Description

Cervical vertebra retractor for neurosurgery operation

Technical Field

The utility model relates to a neurosurgery technical field, concretely relates to neurosurgery is with cervical vertebra retractor equipment.

Background

In the process of cervical vertebra operation, a cervical vertebra retractor is often used, and the cervical vertebra retractor is a common surgical instrument which is used for pricking an upper vertebral body and a lower vertebral body by using nails connected with two end parts, and then opening soft tissues so as to facilitate subsequent treatment. Further, the operation for cervical spondylosis can be divided into an anterior approach and a posterior approach according to the path of the operation. The posterior surgery is more convenient and faster, and the surgery visual field is larger, but the decompression curative effect on the front of the cervical vertebra is poorer; the anterior cervical surgery has relatively high difficulty and risk, small operable space, high inside and low outside, and more surrounding important organs and tissues. Also, in the operation, it is required to be retracted to both sides by the same distance from the skin, the subcutaneous tissue, the muscle, the vascular sheath, the esophagus, the trachea, and the long neck muscle, etc. to expose an operable space for the operation. And the cervical vertebra retractor of the prior art has single function, can not retract surrounding tissues in the operation reasonably and efficiently, and further can not meet the requirement of reasonable and effective operation visual field, and the safety of operation is seriously influenced.

Disclosure of Invention

The utility model provides a cervical vertebra retractor for neurosurgery to solve the above-mentioned prior art that exists cervical vertebra retractor can't realize in upper and lower, left and right sides orientation pull out soft tissue all around, can't realize strutting the technical problem that soft tissue strength is inconsistent, lead to the operation field of vision is restricted and the operation security reduces.

The utility model discloses a neurosurgery is with cervical vertebra retractor equipment adopts following technical scheme:

a cervical vertebra retractor for neurosurgery comprises a support rod, a fixed rod and a movable rod; the support rods are horizontally distributed left and right and are provided with scale mark identification parts with brightness; the fixed rod is vertically connected with the supporting rod and extends downwards; the upper end of the movable rod is sleeved with the support rod and can move relative to the support rod through a driving structure, and the movable rod and the fixed rod are always parallel; the movable rod and the fixed rod have the same structure and respectively comprise a first connecting part and a second connecting part, the first connecting part is connected with the support rod, and the second connecting part is vertically distributed; and the included angle between the first connecting part and the second connecting part is 145-165 degrees; the bottom end of the second connecting part is provided with a fixing hole, a nail rod with an adaptive structure is arranged in the fixing hole, and the upper part of the nail rod is any one of a triangular prism, a quadrangular prism, a hexagonal prism and an octagonal prism; the nail rod is connected with the fixing hole through a strong magnet block, so that the nail rod can be freely installed and detached; supporting blade structures are arranged on the second connecting parts of the moving rod and the fixed rod, and the two supporting blade structures are symmetrically arranged; the blade supporting structure comprises a telescopic rod and blades; the blades are of arc convex surface structures; the telescopic links are distributed at intervals up and down, one end of each telescopic link is connected with the second connecting portion, and the other end of each telescopic link is connected with the corresponding blade, so that the blades can synchronously move back and forth and can prop open soft tissues with the same external force.

As a preferred technical scheme: the driving structure comprises a moving block, a rack plate, a rotating shaft, a gear and a knob; the moving block is sleeved on the support rod and fixedly connected with the moving rod, and the moving block and the support rod can only horizontally move along the support rod; the inner part of the moving block is of a cavity structure; the rack plate is arranged on the upper end face of the supporting rod; the rotating shaft is rotatably arranged in the moving block; the gear is sleeved on the rotating shaft and is always in meshed transmission with the rack plate; the knob sets up in the outer end of pivot, and is equipped with antiskid portion.

As a preferable technical scheme: the driving structure comprises a micro electric push rod, a mounting block and a mounting groove; the bottom end of the miniature electric push rod is arranged on the fixed rod, and the top end of the miniature electric push rod is connected with the movable rod; the mounting block is arranged on the movable rod; the mounting groove is horizontally arranged on the front side wall and the rear side wall of the supporting rod in an extending mode, and the mounting block is matched with the mounting groove for mounting.

Further preferred technical solution: and the miniature electric push rod is also provided with a scale mark identification part with brightness.

As a preferred technical scheme: the telescopic link adopts miniature electronic hydraulic telescopic link, and keeps the blade synchronous motion on dead lever and the carriage release lever.

Further preferred technical solution: and a reinforcing rib is also arranged between the two telescopic rods in the leaf supporting structure.

The utility model has the advantages that:

1. the device is provided with a fixed rod, a movable rod and a nail rod; the reasonable and efficient retraction between the upper vertebral body and the lower vertebral body is realized in the anterior cervical operation process, and the distraction distance between the two nail rods is convenient to observe by arranging the scale mark identification part with brightness; the scale mark identification part adopts an LED lamp line; the movable rod is conveniently and quickly driven to move by arranging the driving structure, the fixed rod is fastened, the movable rod is shifted and retracted, the integral outward layout of the movable rod is kept by arranging the bending structures with the included angles of 145-165 degrees of the movable rod and the fixed rod, and the knob of the manual driving structure is arranged on one side far away from the movable rod, so that the practicability of the device in operation nailing and manual knob rotating retracting operations is improved; meanwhile, the electric driving mode can be adopted to drive the movable rod to move, so that the retracting precision of the retractor is greatly improved;

2. the device further adopts the appearance design that the connecting parts of the nail rod, the fixed rod and the moving rod are of special structures, so that not only is a good guiding and mounting effect achieved, but also the phenomena of twisting and dislocation after connection and mounting are prevented, and the condition that the pulling operation is not performed after the nail rod is inserted into the vertebral body is avoided; the nail rod and the bottom of the fixing hole are provided with the strong magnet blocks for adsorption and fastening, the adsorption force between the strong magnet blocks is large enough, so that the nail rod is convenient to mount and dismount, the convenience of connection and mounting of the nail rod is improved, and the use safety of the device is further improved;

3. the device is further provided with two supporting leaf structures on the movable rod and the fixed rod respectively, and the two supporting leaf structures are symmetrically arranged around the supporting rod; one of the supporting leaf structures is arranged on the fixed rod, the other supporting leaf structure is arranged on the movable rod, and the blades can synchronously move back and forth in the direction shown in the figure by operating the telescopic motion of the telescopic rod, so that the force of the two blades for supporting the surrounding soft tissues is consistent; the balance is ensured, and the operation efficiency of the subsequent operation visual field space is further ensured; in an initial state, the telescopic rod is contracted, the distance between the two blades is minimum, and the telescopic rod is convenient to insert into soft tissues of an affected part needing to be retracted in an operation; in the cervical vertebra operation process, two screw rods of the cervical vertebra open an upper vertebral body and a lower vertebral body, and two opening leaf structures open soft tissues in the left-right direction, so that the upper soft tissues, the lower soft tissues, the left soft tissues, the right soft tissues and the surrounding soft tissues are all opened, and the visual field space and the operation safety required by the anterior cervical vertebra operation are further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a perspective view of the overall structure of embodiment 1 of the present invention;

fig. 2 is a schematic view of a driving structure of embodiment 1 of the present invention;

fig. 3 is a schematic view of the partial explosion of the nail shank according to embodiment 1 of the present invention;

fig. 4 is a perspective view of the entire structure of embodiment 2 of the present invention.

In the figure: 1-support rod, 2-fixed rod, 3-movable rod, 4-scale mark identification part, 5-driving structure, 61-first connecting part, 62-second connecting part, 63-fixed hole, 64-strong magnet block, 7-nail rod, 8-supporting blade structure, 81-telescopic rod, 82-blade, 91-movable block, 92-rack plate, 93-rotating shaft, 94-gear, 95-knob, 101-micro electric push rod, 102-mounting block, 103-mounting groove and 11-reinforcing rib.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may be, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Example 1: as shown in fig. 1-3:

a cervical vertebra retractor for neurosurgery comprises a support rod 1, a fixed rod 2 and a movable rod 3. Distribute about 1 level of bracing piece, and be equipped with the scale mark identification portion 4 that has luminance, be provided with miniature lithium cell in 1 inside of bracing piece for supply power to scale mark identification portion 4 and telescopic link 81, the distance that the cervical vertebra was led out is observed at the operation in-process to the primary doctor of being convenient for. The fixing rod 2 is vertically connected with the supporting rod 1 and extends downwards. As shown in fig. 1: dead lever 2 and carriage release lever 3 homonymy just are located the front side of bracing piece 1, and drive structure 5's knob 95 is located the opposite side of bracing piece 1, is convenient for in cervical vertebra operation process, rotates the operation of knob 95 and then drives the carriage release lever 3 and remove.

The upper end of the movable rod 3 is sleeved with the support rod 1 and can move relative to the support rod 1 through the driving structure 5, and the movable rod 3 and the fixed rod 2 are always parallel. Ensure the balance of the cervical vertebra retracting body. The driving structure 5 comprises a moving block 91, a rack plate 92, a rotating shaft 93, a gear 94 and a knob 95; the moving block 91 is sleeved on the support rod 1 and is fixedly connected with the moving rod 3, and the moving block 91 and the support rod 1 are kept to move horizontally only along the support rod 1. The moving block 91 is of a ring sleeve structure, and a cavity structure is arranged inside the moving block 91 above the supporting rod 1. The rack plate 92 is provided on the upper end surface of the support rod 1; the rotating shaft 93 is rotatably arranged in the moving block 91; the gear 94 is sleeved on the rotating shaft 93, and the gear 94 is always kept in meshed transmission with the rack plate 92; the knob 95 is disposed at the outer end of the rotating shaft 93 and provided with an anti-slip portion, so that the moving rod moving and retracting accuracy is greatly improved. And still be equipped with supplementary fixed knot on the knob 95 and construct, fixed knot constructs and adopts the bolt, runs through the knob and pushes up to the movable block tightly for the knob rotates and fixes after presetting the number of turns, prevents to remove the return again.

The retractor is provided with a fixed rod 2, a movable rod 3 and a nail rod 7; the reasonable and efficient retraction between the upper vertebral body and the lower vertebral body through the nail rods 7 (the direction is shown as the left-right direction in figure 1) in the anterior cervical vertebra operation process is realized, and the retraction distance between the two nail rods 7 is convenient to observe through the arrangement of the scale mark identification part 4 with brightness, which is used as a first weight indication retraction distance. The scale mark identification part 4 adopts an LED lamp line. Further drive the removal of carriage release lever 3 through setting up drive structure 5 convenient and fast ground, realize that 2 positions of dead lever are set up, 3 displacements of carriage release lever lead out to the knob 95 through manual mode drive structure 5 realizes leading out of centrum, has improved the device operation and has nailed, manual rotation knob 95 leads out the practicality of operation.

In this embodiment, still be equipped with protruding mark on the knob 95, correspond knob 95 department at 1 lateral wall of bracing piece and still be equipped with four draw-in groove marks that the annular distributes, the main doctor still can be according to corresponding index mark and corresponding position, at the in-process of rotating the knob, can reachd the displacement of carriage release lever through perception and record knob pivoted number of turns, and then reachs fast and the accurate appointed interval of cervical vertebra centrum is led out in realization.

The movable rod 3 and the fixed rod 2 have the same structure and comprise a first connecting part 61 and a second connecting part 62, wherein the first connecting part 61 is connected with the support rod 1 and is obliquely distributed, and the second connecting part 62 is vertically distributed. The thread pitch of the first connecting portion 61 and the second connecting portion 62 is a transition arc structure, and the included angle between the first connecting portion 61 and the second connecting portion 62 is 145-165 degrees. By the arrangement, the integral 145-165-degree included angle bending structure of the movable rod 3 and the fixed rod 2 is arranged, the design that the two rods are integrally and outwards distributed is kept, a master doctor can conveniently observe the visual field space of the operation in the operation process, and too large shielding cannot be caused.

The bottom end of the second connecting part 62 is provided with a fixing hole 63, a nail rod 7 with an adaptive structure is arranged in the fixing hole 63, and the upper part of the nail rod 7 is any one of a triangular prism, a quadrangular prism, a hexagonal prism and an octagonal prism; the lower part of the nail rod 7 is of a screw structure, so that an external wrench tool sleeve is used for making a special structure on the upper part of the nail rod to be matched and installed, and then the lower part of the nail rod is driven to drill into a vertebral body by rotation. And the nail rod 7 is connected with the fixing hole 63 through a strong magnet block 64, so that the nail rod 7 can be freely installed and detached. Furthermore, the connecting parts of the nail rod 7, the fixed rod 2 and the movable rod 3 are designed to be special-structure shapes, so that a good guiding and mounting effect is achieved, the phenomena of twisting and dislocation after connection and mounting are prevented, and the condition that the nail rod 7 is inserted into a vertebral body and is pulled out is avoided; further still set up nail pole 7 and fixed orifices 63 bottom and set up the strong magnet piece 64 and adsorb and set up firmly, the adsorption affinity between the strong magnet piece 64 is enough big, is convenient for install and dismantle, has improved the convenience that nail pole 7 connects the installation, has further improved the device's safety in utilization.

Furthermore, in this embodiment, a movable first ratchet is further disposed on a side wall of the fixing hole; a second ratchet is also arranged on the upper part of the nail rod, namely one side wall of the upper part of the fixing hole into which the nail rod is completely inserted, and the second ratchet is matched with the first ratchet to ensure that the nail rod moves inwards in one direction until the nail rod is completely inserted into the fixing hole; first ratchet sets up in the inslot of fixed orifices one side, and still is equipped with the spring between the two, when the nail pole of needs change different grade type, presses the spring for first ratchet removes to the inslot, can easily extract the nail pole. So set up, improved the steadiness between nail pole and dead lever, the carriage release lever greatly.

The second connecting portions 62 of the moving rod 3 and the fixed rod 2 are provided with two supporting leaf structures 8, and the two supporting leaf structures 8 are symmetrically arranged around the supporting rod 1. The blade supporting structure 8 comprises an expansion rod 81 and blades 82; the vanes 82 are of arc-shaped convex surface structures; the telescopic links 81 are two in up-down interval distribution, the telescopic links 81 adopt miniature electric hydraulic telescopic links, and the blades 82 on the fixed rod 2 and the movable rod 3 are kept to move synchronously. And a reinforcing rib 11 is further arranged between the two telescopic rods 81 in the supporting leaf structure 8, so that the stability of the supporting leaf structure is improved. One end of the support rod 1 is also provided with a control button for connecting the telescopic rod 81 for real-time control.

One end of each expansion link 81 is connected to the second connecting portion 62 and the other end is connected to the blade 82. In this embodiment, in order to ensure the symmetry of the two blades 82, the connection point of the telescopic rod and the blades is not located on the central axis of the blades; i.e. an eccentric structure will be formed. And then still be equipped with rectangular frame in blade 82 inboard center department for consolidate to be connected with telescopic link 81 through the strengthening rib, make blade 82 can be synchronous back-and-forth movement and equal external force ground struts the soft tissue. The height of the blade 82 is 4-5cm and the bottom end is flush with the bottom end of the travel bar 3.

Further, supporting blade structures 8 are respectively arranged on the movable rod 3 and the fixed rod 2, and the two supporting blade structures 8 are symmetrically arranged around the supporting rod 1; and keeps one of the supporting leaf structures 8 arranged on the fixed rod 2 and the other supporting leaf structure 8 arranged on the movable rod 3. By operating the telescopic motion of the telescopic rod 81, the blades 82 can synchronously move back and forth in the direction of the figure, so that the force of the two blades 82 for propping the surrounding soft tissues open is consistent, the balance is ensured, and the operation efficiency of the subsequent operation visual field space is further ensured.

In an initial state, the telescopic rod 81 is contracted, and the distance between the two blades 82 is the minimum, so that the telescopic rod can be conveniently inserted into soft tissues of an affected part needing to be retracted in an operation; in the process of cervical vertebra operation, the two nail rods 7 of the cervical vertebra open the upper and lower centrum, the two leaf opening structures 8 open the soft tissue in the left and right directions, so that the soft tissue around the upper, lower, left and right sides is opened, and the visual field space and the operation safety required by the anterior cervical vertebra operation are further improved.

Example 2: as shown in fig. 4:

the present embodiment is substantially similar to embodiment 1 in technical content, and differs therefrom in that: the driving structure 5 includes a micro electric putter 101, a mounting block 102, and a mounting groove 103. The miniature electric push rods 101 are horizontally distributed and are electrically connected with the control buttons arranged on the support rod 1, so that the convenient operation and control of a main doctor are realized. The bottom end of the miniature electric push rod 101 is arranged on the fixed rod 2, and the top end is connected with the moving rod 3. The mounting block 102 is provided on the moving rod 3; the mounting grooves 103 are horizontally extended from the front and rear side walls of the support rod 1, and the mounting blocks 102 are maintained to be mounted in a matching manner with the mounting grooves 103. So set up, guarantee good direction effect. The micro-electric putter 101 is also provided with a scale mark 4 having brightness. In this embodiment, be equipped with miniature lithium cell in the 2 tip of dead lever for supply power to scale mark identification portion 4 and miniature electric putter 101, and then adopt the drive of automatic mode, drive the removal of carriage release lever, improved this retractor greatly and used the precision and the intelligent degree of retracting.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a cervical vertebra retractor for neurosurgery which characterized in that: comprises a support rod (1), a fixed rod (2) and a movable rod (3); the support rods (1) are horizontally distributed left and right and are provided with scale mark identification parts (4) with brightness; the fixed rod (2) is vertically connected with the supporting rod (1) and extends downwards; the upper end of the movable rod (3) is sleeved with the support rod (1) and can move relatively through the driving structure (5), and the movable rod (3) and the fixed rod (2) are always parallel; the movable rod (3) and the fixed rod (2) are identical in structure and respectively comprise a first connecting part (61) and a second connecting part (62), the first connecting part (61) is connected with the support rod (1), and the second connecting parts (62) are vertically distributed; and the included angle between the first connecting part (61) and the second connecting part (62) is 145-165 degrees; the bottom end of the second connecting part (62) is provided with a fixing hole (63), a nail rod (7) with an adaptive structure is installed in the fixing hole (63), and the upper part of the nail rod (7) is any one of a triangular prism, a quadrangular prism, a hexagonal prism and an octagonal prism; the nail rod (7) is connected with the fixing hole (63) through a strong magnet block (64) so that the nail rod (7) can be freely installed and detached; supporting blade structures (8) are arranged on the second connecting parts (62) of the movable rod (3) and the fixed rod (2), and the two supporting blade structures (8) are symmetrically arranged around the supporting rod (1); the blade supporting structure (8) comprises a telescopic rod (81) and blades (82); the blades (82) are of arc convex surface structures; the two telescopic rods (81) are distributed at intervals up and down, one end of each telescopic rod (81) is connected with the second connecting portion (62), the other end of each telescopic rod is connected with the corresponding blade (82), and therefore the blades (82) can move back and forth synchronously and stretch soft tissues with the same external force.

2. The cervical retraction device for neurosurgery according to claim 1, characterized in that: the driving structure (5) comprises a moving block (91), a rack plate (92), a rotating shaft (93), a gear (94) and a knob (95); the moving block (91) is sleeved on the support rod (1) and is fixedly connected with the moving rod (3), and the moving block (91) and the support rod (1) can only horizontally move along the support rod (1); the inner part of the moving block (91) is of a cavity structure; the rack plate (92) is arranged on the upper end surface of the support rod (1); the rotating shaft (93) is rotatably arranged in the moving block (91); the gear (94) is sleeved on the rotating shaft (93), and the gear (94) and the rack plate (92) are always kept in meshed transmission; the knob (95) is arranged at the outer end of the rotating shaft (93) and is provided with an anti-skid part.

3. The cervical retraction device for neurosurgery according to claim 1, characterized in that: the driving structure (5) comprises a micro electric push rod (101), a mounting block (102) and a mounting groove (103); the bottom end of the miniature electric push rod (101) is arranged on the fixed rod (2), and the top end of the miniature electric push rod is connected with the movable rod (3); the mounting block (102) is arranged on the moving rod (3); the mounting grooves (103) are horizontally arranged on the front side wall and the rear side wall of the supporting rod (1) in an extending mode, and the mounting blocks (102) and the mounting grooves (103) are mounted in a matched mode.

4. The cervical retraction device for neurosurgery according to claim 3, characterized in that: the miniature electric push rod (101) is also provided with a scale mark identification part (4) with brightness.

5. The cervical retraction device for neurosurgery according to claim 1, characterized in that: the telescopic rod (81) adopts a miniature electric hydraulic telescopic rod (81), and blades (82) on the fixed rod (2) and the movable rod (3) are kept to move synchronously.

6. The cervical retractor device for neurosurgery as recited in claim 5, wherein: and a reinforcing rib (11) is also arranged between the two telescopic rods (81) in the leaf supporting structure (8).