CN210697709U - Cervical vertebra anterior approach multi-joint fine-adjustment retractor - Google Patents

Abstract

The utility model discloses a cervical vertebra approach multi-joint fine setting leads out device, the characteristic is: consisting of a transverse retractor and a longitudinal retractor, wherein: the horizontal retractor comprises blade on the L type, blade under the L type, go up the bracing piece, go up the regulating arm, go up the supporting seat, the lower support bar, lower regulating arm, the lower bolster, the rack, the knob, sliding sleeve and lock gear seat, vertical retractor comprises left arc arm, left annular arm, L type left blade, left branch vaulting pole, left regulating arm, right arc arm, right annular arm, L type right blade, right branch vaulting pole, right regulating arm, arc rack and arc lock rack. The utility model has the advantages of it is following and effect: 1. the teeth of the blades are designed in an arc shape, so that the damage to vertebral arteries on two sides and surrounding tissues when the existing cervical vertebra retractor is used can be reduced, and serious operation complications are avoided; 2. the adjusting arms of the transverse retractor and the longitudinal retractor adopt foldable design, so that the optimal visual effect can be provided; 3. the connection parts of the transverse retractor, the longitudinal retractor and the blades are convenient to install and firm to fix.

Description

Anterior cervical approach multi-joint fine-tuning retractor device

technical field

The utility model relates to medical instruments, in particular to a multi-joint fine-tuning retraction device for anterior cervical approach.

Background technique

Anterior cervical retractor is a commonly used instrument in surgery. It is used for retracting the soft tissue of the cervical spine and exposing the field of view during anterior cervical spine surgery. The existing cervical retractor includes mutually symmetrical L-shaped blades and supports. Rod, support seat, rack and sliding sleeve, in actual use, the vertical piece of the L-shaped left blade and the vertical piece of the L-shaped right blade are respectively attached to the cervical soft tissue on both sides, and the sliding sleeve is moved relative to the rack through the knob. Sliding, thereby adjusting the distance between the two L-shaped blades, so as to achieve the purpose of retracting the soft tissue of the cervical spine. relative positional relationship. Since the retractor does not have multiple movable joints, it is inconvenient to adjust the angle of the retractor when adjusting the surgical field; the surgical field cannot be exposed perfectly, and the shape of the retractor may cause blunt and sharp vertebral arteries and surrounding tissues on both sides. Sexual injury, resulting in serious surgical complications.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a device that can reduce the damage to both vertebral arteries and surrounding tissues when the existing cervical retractor is used, avoid serious surgical complications, provide the best visual effect, facilitate surgery and fixation. Reliable multi-joint fine-tuning retractor for anterior cervical approach.

The purpose of this utility model is achieved in this way:

An anterior cervical approach multi-joint fine-tuning retractor device is characterized in that it is composed of a lateral retractor and a longitudinal retractor, wherein:

The lateral retractor consists of L-shaped upper blade, L-shaped lower blade, upper support rod, upper adjustment arm, upper support seat, lower support rod, lower adjustment arm, lower support seat, rack, knob, sliding sleeve and lock tooth seat The longitudinal retractor consists of left arc arm, left annular arm, L-shaped left blade, left support rod, left adjustment arm, right arc arm, right annular arm, L-shaped right blade, right support rod, right adjustment arm , arc-shaped rack and arc-shaped locking rack;

In the lateral retractor: the L-shaped upper blade and the L-shaped lower blade are symmetrical to each other, the right end of the upper support rod is fixedly connected to the cylinder of the L-shaped upper blade, and the left end of the upper support rod and the right end of the upper adjusting arm are movable through the hinge shaft Connection, the left end of the upper adjusting arm and the right end of the upper support seat are movably connected through the hinge shaft, the right end of the lower support rod is fixedly connected with the cylinder of the L-shaped lower blade, and the left end of the lower support rod and the right end of the lower adjusting arm are movable through the hinge shaft Connection, the left end of the lower adjusting arm and the right end of the lower support seat are movably connected through the hinge shaft, the upper support seat and the lower support seat are parallel and placed horizontally, the vertically placed rack is perpendicular to the upper support seat and the lower support seat, the upper The left end of the support seat is fixed on the top end of the rack, the sliding sleeve sleeved on the outer surface of the rack is slidably connected to the rack with serrations on the right side wall, the left end of the lower support seat is fixed on the top end of the sliding sleeve, and the sliding sleeve is in the sliding sleeve. The right side wall is provided with a locking tooth seat and a knob for fixing the sliding sleeve at the designated position of the rack, locking the L-shaped upper blade and the L-shaped lower blade;

In the longitudinal retractor: the upper end of the left support rod is fixedly connected with the cylinder of the L-shaped left blade, the lower end of the left support rod is movably connected with the upper end of the left adjustment arm through the hinge shaft, and the lower end of the left adjustment arm is connected with the left arc-shaped arm The upper end of the right support rod is movably connected through the hinge shaft, the upper end of the right support rod is fixedly connected with the cylinder of the L-shaped right blade, the lower end of the right support rod and the upper end of the right adjustment arm are movably connected through the hinge shaft, and the lower end of the right adjustment arm is connected with the right arc-shaped arm. The upper end is movably connected by the hinge shaft, the left arc-shaped arm and the left annular arm are integrally and fixedly connected, the right arc-shaped arm and the right annular arm are integrally and fixedly connected, and the right end of the arc-shaped rack with serrations at the bottom is fixed on the right On the left side wall of the annular arm, there is a rack hole penetrating the side wall in the middle of the left annular arm, and the left end of the arc-shaped rack passes through the rack hole to the left. The right end is movably installed under the rack hole of the left annular arm through a hinge shaft, and the locking teeth of the arc-shaped locking teeth can be pressed against the teeth at the bottom of the arc-shaped rack to lock the L-shaped left blade and the L-shaped right blade.

The L-shaped upper blade, the L-shaped lower blade, the L-shaped left blade and the L-shaped right blade have the same structure. The bending direction of the curved tooth piece faces the direction of the vertebral body, which can avoid damage to the vertebral artery and the surrounding soft tissue. the top of the horizontal plate.

The curved toothed piece of the L-shaped left blade is curved to the right, and the curved curved toothed piece of the L-shaped right blade is curved to the left.

Compared with the prior art, the utility model has the following advantages and effects:

1. The teeth of the blade are arc-shaped, which can reduce the damage to the vertebral arteries and surrounding tissues on both sides when the existing cervical retractor is used, and avoid serious surgical complications;

2. The adjusting arm of the horizontal retractor and the vertical retractor adopts a foldable design, because it can rotate around the hinge axis, so that the support rod and the adjusting arm on the same side can be rotated 180 degrees, and the adjusting arm and the support seat on the same side can be rotated 180 degrees. 180-degree rotation, 180-degree rotation between the adjustable arm and the arc arm on the same side, thus providing the best visual effect;

3. The connecting parts of the lateral retractor, the longitudinal retractor and the blade are easy to install and fixed firmly.

Description of drawings

Fig. 1 is the structural representation of transverse retractor;

Fig. 2 is the structural representation of longitudinal retractor;

Fig. 3 is the structural representation of blade;

Fig. 4 is the left side view of Fig. 3;

FIG. 5 is a schematic diagram of the combined use of the present invention.

Detailed ways

The present utility model will be described in further detail below in conjunction with the embodiments and with reference to the accompanying drawings.

An anterior cervical approach multi-joint fine-tuning retractor device is characterized in that it is composed of a lateral retractor and a longitudinal retractor, wherein:

The lateral retractor consists of L-shaped upper blade 1, L-shaped lower blade 2, upper support rod 3, upper adjustment arm 5, upper support seat 7, lower support rod 4, lower adjustment arm 6, lower support seat 8, rack 9 , knob 10, sliding sleeve 11 and locking tooth seat 12, the longitudinal retractor is composed of left arc arm 13, left annular arm 15, L-shaped left blade 19, left support rod 21, left adjustment arm 23, right arc arm 14. The right annular arm 16, the L-shaped right blade 20, the right support rod 22, the right adjusting arm 24, the arc-shaped rack 17 and the arc-shaped locking rack 18 are composed;

In the lateral retractor: the L-shaped upper blade 1 and the L-shaped lower blade 2 are symmetrical to each other, the right end of the upper support rod 3 is fixedly connected to the cylinder 52 of the L-shaped upper blade 1, and the left end of the upper support rod 3 is connected to the upper adjusting arm The right end of 5 is movably connected through the hinge shaft, the left end of the upper adjusting arm 5 is movably connected with the right end of the upper support seat 7 through the hinge shaft, the right end of the lower support rod 4 is fixedly connected with the cylinder 52 of the L-shaped lower blade 2, and the lower support rod The left end of 4 and the right end of the lower adjusting arm 6 are movably connected through a hinge shaft, the left end of the lower adjusting arm 6 is movably connected with the right end of the lower support seat 8 through the hinge shaft, and the upper support seat 7 and the lower support seat 8 are parallel and placed horizontally, The rack 9 placed vertically is perpendicular to the upper support seat 7 and the lower support seat 8, the left end of the upper support seat 7 is fixed to the top end of the rack 9, and the sliding sleeve 11 sleeved on the outer surface of the rack 9 and the right side wall The racks 9 with serrations are slidably connected, the left end of the lower support seat 8 is fixed on the top of the sliding sleeve 11, and the right side wall of the sliding sleeve 11 is provided with a locking tooth seat 12 for fixing the sliding sleeve 11. The knob 10 fixed at the designated position of the rack 9 locks the L-shaped upper blade 1 and the L-shaped lower blade 2;

In the longitudinal retractor: the upper end of the left support rod 21 is fixedly connected with the cylinder 52 of the L-shaped left blade 19, the lower end of the left support rod 21 is movably connected with the upper end of the left adjustment arm 23 through the hinge shaft, and the left adjustment arm 23 The lower end is movably connected with the upper end of the left arc-shaped arm 13 through the hinge shaft, the upper end of the right support rod 22 is fixedly connected with the cylinder 52 of the L-shaped right blade 20, and the lower end of the right support rod 22 and the upper end of the right adjusting arm 24 are movable through the hinge shaft Connection, the lower end of the right adjusting arm 24 and the upper end of the right arc-shaped arm 14 are movably connected through a hinge shaft, the left arc-shaped arm 13 and the left annular arm 15 are integrally and fixedly connected, and the right arc-shaped arm 14 and the right annular arm 16 are integrally connected The right end of the arc-shaped rack 17 with serrations at the bottom is fixed on the left side wall of the right annular arm 16, and the middle of the left annular arm 15 is provided with a rack hole 25 penetrating the side wall. The left end of the bar 17 protrudes from the rack hole 25 to the left, and the right end of the arc-shaped locking tooth 18 with the torsion spring is movably installed under the rack hole 25 of the left annular arm 15 through the hinge shaft. The locking teeth 26 can be pressed against the teeth at the bottom of the arc-shaped rack 17 to lock the L-shaped left blade 19 and the L-shaped right blade 20 .

The L-shaped upper blade 1 , the L-shaped lower blade 2 , the L-shaped left blade 19 and the L-shaped right blade 20 have the same structure and are all blades, and they are all connected by a cylinder 52 , an L-shaped connecting plate 53 and an arc-shaped bending plate. The curved tooth piece 51 is composed of the curved tooth piece 51, and the bending direction of the curved tooth piece 51 faces the direction of the vertebral body, which can avoid damage to the vertebral artery and the surrounding soft tissue. One end of the cylinder 52 is vertically fixed on the vertical plate 54 of the L-shaped connecting plate 53. The top end of the tooth piece 51 is fixed to the top end of the horizontal plate 55 of the L-shaped connecting plate 53 .

The curved toothed piece 53 of the L-shaped left blade 19 is curved to the right, and the curved curved toothed piece 53 of the L-shaped right blade 20 is curved to the left.

Claims (3)

1. The utility model provides a cervical vertebra way of approach multijoint fine setting retractor which characterized in that: consisting of a transverse retractor and a longitudinal retractor, wherein:

the horizontal retractor consists of an L-shaped upper blade, an L-shaped lower blade, an upper supporting rod, an upper adjusting arm, an upper supporting seat, a lower supporting rod, a lower adjusting arm, a lower supporting seat, a rack, a knob, a sliding sleeve and a locking gear seat, and the longitudinal retractor consists of a left arc-shaped arm, a left annular arm, an L-shaped left blade, a left supporting rod, a left adjusting arm, a right arc-shaped arm, a right annular arm, an L-shaped right blade, a right supporting rod, a right adjusting arm, an arc-shaped rack and an arc-shaped locking rack;

in a lateral retractor: the L-shaped upper blade and the L-shaped lower blade are mutually symmetrical, the right end of the upper supporting rod is fixedly connected with a cylinder of the L-shaped upper blade, the left end of the upper supporting rod is movably connected with the right end of the upper adjusting arm through a hinge shaft, the left end of the upper adjusting arm is movably connected with the right end of the upper supporting seat through a hinge shaft, the right end of the lower supporting rod is fixedly connected with the cylinder of the L-shaped lower blade, the left end of the lower supporting rod is movably connected with the right end of the lower adjusting arm through a hinge shaft, the left end of the lower adjusting arm is movably connected with the right end of the lower supporting seat through a hinge shaft, the upper supporting seat and the lower supporting seat are parallel and horizontally placed, a vertically placed rack is perpendicular to the upper supporting seat and the lower supporting seat, the left end of the upper supporting seat is fixed at the top end of the rack, a sliding sleeve sleeved on the outer surface of the rack is slidably connected with the rack with a sawtooth, the left end of the lower supporting seat is fixed at the top end of the sliding sleeve Locking the L-shaped upper blade and the L-shaped lower blade;

in a longitudinal retractor: the upper end of a left support rod is fixedly connected with a cylinder of an L-shaped left blade, the lower end of the left support rod is movably connected with the upper end of a left adjusting arm through a hinge shaft, the lower end of the left adjusting arm is movably connected with the upper end of a left arc-shaped arm through a hinge shaft, the upper end of a right support rod is fixedly connected with the cylinder of an L-shaped right blade, the lower end of the right support rod is movably connected with the upper end of a right adjusting arm through a hinge shaft, the lower end of the right adjusting arm is movably connected with the upper end of a right arc-shaped arm through a hinge shaft, the left arc-shaped arm is fixedly connected with the left ring-shaped arm in an integrated manner, the right arc-shaped arm is fixedly connected with the right ring-shaped arm in an integrated manner, the right end of an arc-shaped rack with sawteeth arranged at the bottom is fixed on the left side wall of the right ring-shaped arm, a rack hole penetrating through the side wall is arranged in the middle of the left ring-, the lock teeth of the arc lock teeth can be pressed against the sawteeth at the bottom of the arc rack to lock the L-shaped left blade and the L-shaped right blade.

2. The cervical spine anterior approach multi-joint fine adjustment retraction device according to claim 1, wherein: l type upper blade, L type lower blade, L type left blade and L type right blade structure are the same, are the blade, and constitute by even drum as an organic whole, L type connecting plate and arc bent tooth piece, and the crooked direction of this arc bent tooth piece is towards centrum direction, can avoid haring vertebral artery and surrounding soft tissue, and the one end vertical fixation of drum is on the riser of L type connecting plate, and the top of top position tooth piece is fixed on the top of the diaphragm of L type connecting plate.

3. The cervical spine anterior approach multi-joint fine adjustment retraction device according to claim 2, wherein: the arc-shaped bent tooth sheet of the L-shaped left blade is bent to the right side, and the arc-shaped bent tooth sheet of the L-shaped right blade is bent to the left side.

Images