CN214632214U - Cervical vertebra anterior distraction exposure device - Google Patents

Abstract

The utility model provides a cervical vertebra front road struts and shows device, it includes rack (a), first cantilever of fixedly connected with (1) and swing joint have second cantilever (2) on rack (a), articulated swing arm (3) on first cantilever (1), articulated second swing arm (9), its characterized in that on second cantilever (2): articulated third cantilever (7) on second swing arm (9), be connected with horizontal pole (7 a) on third cantilever (7), swing joint has slider (5) on horizontal pole (7 a), wears to be equipped with vice hook (8) of taking off on slider (5). The utility model has simple structure and convenient use, reduces the number of personnel during operation, and optimizes the operation visual field of the operation personnel.

Description

Cervical vertebra anterior distraction exposure device

The technical field is as follows:

the utility model belongs to the technical field of surgical instruments and specifically relates to an anterior cervical distraction exposure device.

Background art:

in recent years, with the increase of information-based work, the incidence of cervical spondylosis has increased, and surgical treatment is often required in association with spinal and neurological symptoms. The occurrence of clinical symptoms of cervical spondylosis is usually caused by mechanical compression, the intervention of surgical operation can effectively relieve the compression and improve the function of spinal nerves, and the anterior direct decompression operation mode is a common clinical operation method.

The cervical vertebra has special anatomical structure, is adjacent to important vascular nerves, has great difficulty in the operation process, higher operation difficulty and higher requirements on individuation and accuracy of the operation, and can cause paralysis or even life threatening if the patient has slight misoperation in the operation and the patient feels dysfunction.

The anterior approach generally adopts a right anterior cervical transverse incision approach, and the surgical operation needs to be completed by maintaining sufficient space for the operator after dissociating soft tissues and exposing the vertebral body and the intervertebral space. The traditional anterior cervical vertebral body spreader (caspar) is as follows: the patent of CN2018203600237 can pull apart the soft tissues at the far and near ends longitudinally, and can effectively open the intervertebral space, but 2-3 assistants are still needed to pull the soft tissues such as trachea, esophagus and the like at the two sides, which affects the operation visual field, and the space of the cervical vertebra operating table is narrow, so that many assistants are not beneficial to the operation of the operator. In addition, when the existing draw hooks are used for drawing soft tissues such as the tracheoesophageal, the soft tissues such as the tracheoesophageal are easy to be separated from the draw hooks or scratched by the draw hooks due to smooth surfaces.

The utility model has the following contents:

the utility model provides an anterior cervical distraction exposure device, which aims to overcome the defects in the prior art.

The application provides the following technical scheme:

a cervical vertebra anterior distraction exposure device comprises a rack, wherein a first cantilever and a second cantilever which is in sliding connection are fixedly connected to the rack, a first swing arm is hinged to one end of the first cantilever, a second swing arm is hinged to one end of the second cantilever, a sliding sleeve which is correspondingly matched with the rack is arranged at the other end of the second cantilever, a non-return pawl which is correspondingly matched with the rack is arranged on the sliding sleeve, bone nail sleeves are arranged on the first swing arm and the second swing arm, and bone nails penetrate through the bone nail sleeves; wear to be equipped with the slider on the rack between first cantilever and second cantilever, wear to be equipped with the main hook of taking off on the slider, its characterized in that: still articulated on the second swing arm have the third cantilever, be equipped with the horizontal pole with rack parallel distribution on the third cantilever, wear to be equipped with another slider on the horizontal pole, still wear to be equipped with vice taking off the hook on this slider.

On the basis of the technical scheme, the following further technical scheme can be provided:

the sliding block comprises a main body of the sliding block, a sliding hole correspondingly matched with the rack is formed in the main body, and a through hole is formed in the main body above the sliding hole; through-hole and sliding hole axial mutually perpendicular and the pore wall department and the sliding hole intercommunication of through-hole, the main part upper end still is equipped with and corresponds the complex fitting pin with the through-hole, be equipped with the mounting groove with the through-hole intercommunication on one side of the main part, be equipped with the gear in the mounting groove, some teeth of gear stretch to in the through-hole.

The main raking hook comprises a main raking rod, a rack portion correspondingly matched with the gear is arranged on the main raking rod, and an arc-shaped raking plate is arranged at the other end of the main raking rod.

The lower part of the outer wall of each bone nail sleeve is welded with a Kirschner wire sleeve, jacks which are coaxially distributed with the corresponding Kirschner wire sleeves are arranged on the first swing arm and the second swing arm, and Kirschner wires are arranged in the Kirschner wire sleeves and the jacks.

The main raking hook comprises a main raking rod, a tooth strip part of the gear is arranged on the main raking rod, a flat plate part is welded at the other end of the main raking rod, a mounting hole is formed in the flat plate part, and a steel ball spring lock pin is arranged on the wall of the mounting hole; the steel ball spring lock pin is characterized in that an arc-shaped stripping plate is arranged, a cylinder which corresponds to the mounting hole is arranged at the upper end of the stripping plate, an annular groove which corresponds to the steel ball spring lock pin and is matched with the steel ball spring lock pin is arranged on the cylinder, a groove body which is distributed along the arc-shaped surface of the stripping plate is arranged at the lower part of one side of the stripping plate, and an upper arc section, a middle arc section and a lower arc section are further arranged on the groove wall of the groove body from top to bottom.

Utility model advantage:

the utility model adds a front hook and a secondary hook on the basis of the original intervertebral spreader (cascar),

be favorable to the open country of anterior cervical vertebra art to show, the intervertebral struts, can liberate the assistant again, reduce assistant's personnel, the stability of trachea and esophagus avoids trachea and esophagus to slide in taking off the hook when being favorable to taking off trachea and esophagus, just the utility model discloses combine more firmly with the cervical vertebra when using.

Description of the drawings:

fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic perspective view of the present invention in another direction;

fig. 3 is a schematic structural view of the main hook after being assembled on the sliding block in the present invention;

FIG. 4 is a schematic view of the bone screw of the present invention assembled into a bone screw sleeve;

fig. 5 is a schematic structural view of the main hook of the present invention.

The specific implementation mode is as follows:

as shown in fig. 1 to 5, the cervical spine distraction device comprises a rack a, the cross section of the rack a is a round shape with a part cut off, and teeth are arranged on the cut plane. The first cantilever 1 is fixedly connected with one end of the rack a, and the first swing arm 3 is hinged to one end of the first cantilever 1. Be equipped with the bone nail sleeve 4 of vertical distribution on first swing arm 3, first swing arm 3 and bone nail sleeve 4 formula structure as an organic whole.

A sliding sleeve 2a is arranged on the rack a at one side of the first cantilever 1, a gear (not shown in the figure) correspondingly matched with the rack a is arranged on the sliding sleeve 2a, a T-shaped rotating handle 2b is fixedly connected on a rotating shaft of the gear, and a non-return pawl 2c correspondingly matched with the rack a is hinged on the sliding sleeve 2a at one side of the rotating handle 2 b. The gear can be rotated through the rotating handle 2b to drive the sliding sleeve 2a to move towards the first cantilever 1 along the rack a, and when the sliding sleeve 2a needs to move towards the direction away from the first cantilever 1, only one end of the non-return pawl 2c needs to be pressed to enable the other end of the non-return pawl 2c to be separated from the rack a, so that the sliding sleeve 2a can be pulled to move.

A sliding block 5 in sliding fit is further arranged through the rack a between the first cantilever 1 and the sliding sleeve 2 a. The sliding block 5 comprises a main body 5a of the sliding block, and a sliding hole 5b correspondingly matched with the rack a is formed in the main body 5a, so that the main body 5a can be sleeved on the rack a in a penetrating mode and can slide along the axial direction of the rack a.

A through hole 5c is arranged on the main body 5a above the sliding hole 5b, the axial directions of the through hole 5c and the sliding hole 5b are mutually vertical, and an opening hole 5g communicated with the sliding hole 5b is arranged on the hole wall at the lower side of the through hole 5 c. The upper end of the main body 5a is also provided with a locking pin 5f correspondingly matched with the through hole 5c, and the upper end of the locking pin 5f is fixedly connected with a butterfly knob 5 g.

The lower end of the locking pin 5f is extended into the through hole 5c by rotating the locking pin 5f so as to press a main gin pole 6a (mentioned later) inserted into the through hole 5c, so that the main gin pole 6a moves down to press the rack a to lock the slider 5 on the rack a, and simultaneously, the main gin pole 6a is locked.

The main body 5a is provided with a mounting groove 5d communicated with the through hole 5c on one side, a gear 5e is arranged in the mounting groove 5d, a part of teeth of the gear 5e extend into the through hole 5c and can form transmission fit with a rack part 6b (mentioned below) on the main gin pole 6a inserted into the through hole 5c, the rotating shaft of the gear 5e upwards extends out of the mounting groove 5d, and the end part of the gear is provided with a T-shaped handle 5 h. The mounting groove 5d and the main body 5a are of an integrated structure.

A main raking hook 6 is arranged, the main raking hook 6 comprises a main raking rod 6a inserted into a through hole 5c of the sliding block 5, and a rack portion 6b correspondingly matched with the gear 5e is arranged on the main raking rod 6a along the axial direction of the main raking rod 6 a. The gear 5e is driven by the handle 5h to rotate, so that the main gin pole 6a can be driven to move in the through hole 5 c.

One end of the main derrick mast 6a is welded with a flat plate part 6k, the flat plate part 6k is provided with a mounting hole 6j, the hole wall of the mounting hole 6j is provided with a steel ball spring lock pin 6n, and the steel ball spring lock pin 6n is a mature product in the prior art, so that the structure of the steel ball spring lock pin is not described in detail.

A stripping plate 6c is arranged, a cylinder 6t correspondingly matched with the mounting hole 6j is arranged at the upper end of the stripping plate 6c, and a ring groove 6m correspondingly matched with the steel ball spring lock pin 6n is arranged on the cylinder 6 t. When the cylinder 6t is inserted into the mounting hole 6j, the upper end of the cylinder 6t extrudes the steel balls of the steel ball spring lock pin 6n to enable the steel balls to retract, then after the cylinder 6t is inserted in place, the ring groove 6m is just aligned with the steel balls of the steel ball spring lock pin 6n, and at the moment, the steel balls rebound and are clamped into the ring groove 6m, so that the part-pulling plate 6c is connected with the flat plate part 6 k.

The lower part of the scraping plate 6c is arc-shaped, a groove body 6d is arranged along the arc-shaped surface of the scraping plate 6c, and an upper arc section 6e, a middle arc section 6f and a lower arc section 6h are further arranged on the groove wall of the groove body 6d from top to bottom. So that when the esophagus and the trachea are held by the main hook 6, the esophagus and the trachea are clamped into the corresponding upper arc section 6e or the middle arc section 6f or the lower arc section 6h, so that the esophagus and the trachea can not be scratched when the esophagus and the trachea are held.

The sliding sleeve 2a on one side of the non-return pawl 2c is welded with a second cantilever 2, one end of the second cantilever 2 is hinged with a second swing arm 9, the second swing arm 9 is also provided with another bone nail sleeve 4, and the second swing arm 9 and the bone nail sleeve 4 are also of an integrated structure.

A third cantilever 7 is hinged at one end of the second swing arm 9. And a cross bar 7a is welded at one end of the third cantilever 7, and the cross bar 7a and the rack a are distributed in parallel. Another sliding block 5 is arranged on the cross rod 7a in a penetrating way, and a blocking piece 7b which forms limit fit with the other sliding block 5 extends outwards from one end part of the cross rod 7 a.

An auxiliary digging hook 8 is inserted into the through hole 5c of the other sliding block 5, the auxiliary digging hook 8 comprises an auxiliary digging rod 8a, an auxiliary flat plate part 8b and an arc-shaped auxiliary digging plate 8c, and the structure of the auxiliary digging hook 8 is basically the same as that of the main digging hook 6, so that the only difference is that the area of the auxiliary digging plate 8c in the auxiliary digging hook 8 is smaller than that of the arc-shaped digging plate 6 c. The structure of the secondary raking hook 8 is not described here.

Two bone nail sleeves 4 in all wear to be equipped with bone nail 4d, be equipped with corresponding complex nail cap 4c at bone nail 4d top of bone nail sleeve 4 upper end. The outer wall of the lower end part of each bone nail sleeve 4 is welded with a Kirschner wire sleeve 4a, and a certain included angle is formed between the axis of the Kirschner wire sleeve 4a and the bone nail sleeve 4. The device is fixed to the bone by means of bone screws 4d driven into the bone.

The second swing arm 9 and the swing arm 3 are both provided with insertion holes 4b which are coaxially distributed with the corresponding Kirschner wire sleeve 4a, and Kirschner wires 4c are arranged in the Kirschner wire sleeve 4a and the insertion holes 4 b.

When a patient with osteoporosis is met, the adhesion strength of the whole device on the bone after the bone nail 4d is nailed into the bone can be increased by additionally arranging the Kirschner wire 4c and pushing the Kirschner wire 4c into the bone on one side of the bone nail 4d, and the stability of the whole device is ensured when the main hook and the auxiliary hook are used for drawing soft tissues such as trachea, esophagus and the like. This device is because main, vice take off the hook can follow two directions and pull open soft tissues such as trachea esophagus and have enlarged the operation field of vision, and main, vice operation of taking off the hook only needs an assistant, main, vice take off the hook with soft tissues such as trachea esophagus tractive back in place, locking pin 5f locking on slider 5 is main, vice take off the hook with it fixed, then the assistant can withdraw the operating table, give out operating space for the operation person, the comfort level when having improved the operation of operation person, the degree of difficulty when having reduced the operation of operation person, fatigue degree and operation time, the operation quality has been promoted, patient's postoperative recovery time has been reduced.

Claims (5)

1. The utility model provides a cervical vertebra way struts and shows device, it includes rack (a), fixedly connected with first cantilever (1) and sliding connection's second cantilever (2) on rack (a), it has first swing arm (3) to articulate at first cantilever (1) one end, it has second swing arm (9) to articulate at second cantilever (2) one end, be equipped with at the other end of second cantilever (2) with rack (a) corresponding complex sliding sleeve (2 a), be equipped with on sliding sleeve (2 a) with rack (a) corresponding complex non-return pawl (2 c), be equipped with bone nail sleeve (4) on first swing arm (3) and second swing arm (9), wear to be equipped with bone nail (4 d) in bone nail sleeve (4); wear to be equipped with slider (5) on rack (a) between first cantilever (1) and second cantilever (2), wear to be equipped with on slider (5) and mainly take off hook (6), its characterized in that: still articulated on second swing arm (9) have third cantilever (7), be equipped with horizontal pole (7 a) with rack (a) parallel distribution on third cantilever (7), wear to be equipped with another slider (5) on horizontal pole (7 a), still wear to be equipped with on this slider (5) and take off hook (8) by the side.

2. An anterior cervical distraction exposure device according to claim 1, wherein: the sliding block (5) comprises a main body (5 a) of the sliding block, a sliding hole (5 b) correspondingly matched with the rack (a) is formed in the main body (5 a), and a through hole (5 c) is formed in the main body (5 a) above the sliding hole (5 b); through-hole (5 c) and sliding hole (5 b) axial mutually perpendicular and the pore wall department and the sliding hole (5 b) of through-hole (5 c) intercommunication, main part (5 a) upper end still is equipped with and corresponds complex fitting pin (5 f) with through-hole (5 c), be equipped with mounting groove (5 d) with through-hole (5 c) intercommunication in main part (5 a) one side, be equipped with gear (5 e) in mounting groove (5 d), partly tooth of gear (5 e) stretches to in through-hole (5 c).

3. An anterior cervical distraction exposure device according to claim 2, wherein: the main raking hook (6) comprises a main raking rod (6 a), a rack portion (6 b) which corresponds to and is matched with the gear (5 e) is arranged on the main raking rod (6 a), an arc-shaped raking plate (6 c) is arranged at the other end of the main raking rod (6 a), a groove body (6 d) which is distributed along the arc-shaped surface of the raking plate (6 c) is arranged at the lower portion of one side of the raking plate (6 c), and an upper arc section (6 e), a middle arc section (6 f) and a lower arc section (6 h) are further arranged on the groove wall of the groove body (6 d) from top to bottom.

4. An anterior cervical distraction exposure device according to claim 1, wherein: every bone nail sleeve (4) outer wall's lower part all welds kirschner wire sleeve (4 a), be equipped with on first swing arm (3) and second swing arm (9) with jack (4 b) of the coaxial distribution of kirschner wire sleeve (4 a) that corresponds kirschner wire sleeve (4 a) and jack (4 b) in be equipped with kirschner wire (4 c).

5. An anterior cervical distraction exposure device according to claim 2, wherein: the main derrick mast (6) comprises a main derrick mast (6 a), a rack part (6 b) correspondingly matched with the gear (5 e) is arranged on the main derrick mast (6 a), a flat plate part (6 k) is welded at one end of the main derrick mast (6 a), a mounting hole (6 j) is formed in the flat plate part (6 k), and a steel ball spring lock pin (6 n) is arranged on the wall of the mounting hole (6 j); an arc-shaped stripping plate (6 c) is arranged, a matched cylinder (6 t) corresponding to a mounting hole (6 j) is arranged at the upper end of the stripping plate (6 c), an annular groove (6 m) corresponding to a steel ball spring lock pin (6 n) is arranged on the cylinder (6 t), a groove body (6 d) distributed along the arc-shaped surface of the stripping plate (6 c) is arranged at the lower part of one side of the stripping plate (6 c), and an upper arc section (6 e), a middle arc section (6 f) and a lower arc section (6 h) are further arranged on the groove wall of the groove body (6 d) from top to bottom.

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