CN213098058U

CN213098058U - Retractor for posterior spine incision operation

Info

Publication number: CN213098058U
Application number: CN202020600093.2U
Authority: CN
Inventors: 李若禹; 丁文元
Original assignee: Third Hospital of Hebei Medical University
Current assignee: Third Hospital of Hebei Medical University
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-05-04
Anticipated expiration: 2030-04-21

Abstract

The utility model provides a backbone way of escape retractor for incision operation belongs to medical instrument technical field, including horizontal pole, first vaulting pole and second vaulting pole, be equipped with fixed block and sliding block on the horizontal pole, be equipped with the locating part on the sliding block, first vaulting pole and second vaulting pole all set firmly in the horizontal pole lateral part and set up side by side, the length of first vaulting pole and second vaulting pole is all adjustable, behind the spacing sliding block of locating part, form the space that is used for backbone way of escape incision operation between first vaulting pole and the second vaulting pole, the notched range of strutting of backbone tissue is adjusted with the help of the sliding block. The utility model provides a backbone way of escape is cut retractor for operation has and is adjustable to the operation incision scope, and the operation of being convenient for is applicable to the operation incision that struts the different degree of depth, can not constitute the technological effect of influence to the tissue.

Description

Retractor for posterior spine incision operation

Technical Field

The utility model belongs to the technical field of medical instrument, more specifically say, relate to a backbone way of escape retractor for incision operation.

Background

In the orthopedic surgery, when a posterior spine incision is performed, a distraction device is required to separate adjacent tissues by a certain distance so as to perform surgery on a diseased spine. In the existing operation process, because the tissues beside the spine need to be pushed away to enlarge the operation visual field, the surgical personnel often need to pull the tissues aside from the spine by using a draw hook so as to open the tissue incision, which is beneficial to the operation. Because the operation time is too long, the operator needs to fix the draw hook for a long time and continuously adjust the position of the draw hook, so that the operator is easy to fatigue and the operation time is influenced. In addition, the draw hook is manually held and inserted into tissues, and for operation incisions with different depths, the draw hook is not easy to control the opening range of the tissue incision, so that the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a backbone way of escape retractor for incision operation aims at solving the difficult technical problem who controls the range of strutting of operation incision of manual operation drag hook.

In order to achieve the above object, the utility model adopts the following technical scheme: the retractor for the posterior spine incision operation comprises a cross rod, a first support rod and a second support rod, wherein a fixed block and a sliding block sliding along the cross rod are arranged on the cross rod, and a limiting piece used for limiting the sliding block is arranged on the sliding block; the first support rod is arranged on the side part of the cross rod, one end of the first support rod is fixedly arranged on the side part of the fixed block, the other end of the first support rod is used for being inserted into one side of the spine tissue incision, and the length of the first support rod is adjustable; the second supporting rod is arranged on the side portion of the transverse rod and is arranged in parallel with the first supporting rod, one end of the second supporting rod is fixedly arranged on the side portion of the sliding block, the other end of the second supporting rod is used for being inserted into the other side of the spine tissue incision, the length of the second supporting rod is adjustable, the limiting part limits the sliding block, a space for a spine posterior incision operation is formed between the first supporting rod and the second supporting rod, and the opening range of the spine tissue incision is adjusted by means of the sliding block.

As another embodiment of this application, be equipped with on the sliding block and be used for driving the sliding block is followed the gliding drive division of horizontal pole.

As another embodiment of this application, backbone way of escape cuts retractor for operation still includes the scissors handle, the scissors handle includes mutual articulated to pressing from both sides portion and handheld portion, be equipped with two to pressing from both sides the portion, handheld portion is equipped with two handheld ends that are used for hand to grip, two to pressing from both sides the end respectively with the fixed block with the sliding block is universal articulated, the scissors handle can be respectively in the perpendicular to on the horizontal pole length direction with be on a parallel with rotate on the horizontal pole length direction, extrude two relatively handheld end is used for the drive the sliding block is followed the horizontal pole slides.

As another embodiment of the application, the first support rod and the second support rod respectively comprise a sleeve, an expansion rod and a baffle, the sleeve is in an L shape, one end of the sleeve is fixedly connected with the fixed block or the sliding block, and the other end of the sleeve is provided with a through hole; one end of the telescopic rod is inserted into the sleeve penetrating hole, the other end of the telescopic rod is a free end, the telescopic rod can slide in the sleeve, and the insertion length in the sleeve is adjustable; the separation blade joint is in on the free end of telescopic link, the separation blade is used for pegging graft at backbone tissue incision side, the grafting incision degree of separation blade is with the help of the telescopic link is adjusted, and the tissue incision struts the scope with the help of the interval regulation of two separation blades.

As another embodiment of the application, the blocking piece is an arc-shaped blocking piece protruding towards the tissue incision side, and the blocking piece of the first support rod is opposite to the blocking piece of the second support rod.

As another embodiment of this application, be equipped with the rack on the length direction of horizontal pole bottom end face, the drive division is including passing the body of rod of sliding block and locating on the body of rod and with the driven gear of rack toothing, the sliding block is in with the help of the rotation of gear slide on the horizontal pole.

As another embodiment of this application, the locating part is for locating jackscrew on the sliding block, the jackscrew pushes away the horizontal pole is used for spacingly the sliding block.

As another embodiment of this application, the sliding block inboard is equipped with the gyro wheel, the gyro wheel with horizontal pole up end rolling friction connects.

As another embodiment of this application, the inboard of sliding block is equipped with the slide rail, the horizontal pole both sides be equipped with the spout of slide rail cooperation sliding connection.

As another embodiment of the application, the hand-held end of the scissors handle is provided with a locking part for locking the sliding position of the sliding block.

The utility model provides a posterior spine incision retractor for operation's beneficial effect lies in: compared with the prior art, the utility model discloses backbone way of escape cuts retractor for operation, peg graft respectively in the notched both sides of backbone tissue with first vaulting pole and second vaulting pole, be located the position on the horizontal pole through adjusting the sliding block, through the fixed sliding block of locating part, just can fix the distance between first vaulting pole and the second vaulting pole, and then enlarge the operation incision scope of strutting, the difficult technical problem who controls the incision scope of operation of manual operation drag hook has been solved, it is adjustable to have the operation incision scope, be convenient for operation, be applicable to the operation incision of strutting the different degree of depth, can not constitute the technological effect of influence to the tissue.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a retractor for posterior spine incision surgery according to an embodiment of the present invention;

fig. 2 is a side view of a posterior spine incision retractor provided in accordance with an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic view of the universal hinge structure of the clamping end and the fixed block or the sliding block of the retractor for posterior spine incision operation provided by the embodiment of the present invention.

In the figure: 1. a cross bar; 11. a fixed block; 12. a slider; 121. a slide rail; 122. a chute; 13. a limiting member; 14. a drive section; 141. a rod body; 142. a gear; 15. a rack; 16. a roller; 2. a first stay bar; 21. a sleeve; 22. a telescopic rod; 23. a baffle plate; 3. a second stay bar; 4. a scissor handle; 41. a locking portion.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 4 together, a retractor for posterior spinal incision provided by the present invention will now be described. The retractor for the posterior spine incision operation comprises a cross rod 1, a first support rod 2 and a second support rod 3, wherein a fixed block 11 and a sliding block 12 sliding along the cross rod 1 are arranged on the cross rod 1, and a limiting piece 13 used for limiting the sliding block 12 is arranged on the sliding block 12; the first stay bar 2 is arranged on the side part of the cross bar 1, one end of the first stay bar is fixedly arranged on the side part of the fixed block 11, the other end of the first stay bar is used for being inserted into one side of the spine tissue incision, and the length of the first stay bar 2 is adjustable; second vaulting pole 3 is located 1 lateral part of horizontal pole and is set up side by side with first vaulting pole 2, and one end sets firmly in sliding block 12 lateral parts, the other end is used for pegging graft at the notched opposite side of backbone tissue, and the length of second vaulting pole 3 is adjustable, behind the spacing sliding block 12 of locating part 13, forms the space that is used for the backbone posterior approach to open the operation between first vaulting pole 2 and the second vaulting pole 3, and the notched range of strutting of backbone tissue is adjusted with the aid of sliding block 12.

The utility model provides a backbone way of escape retractor for incision operation, compared with the prior art, peg graft respectively in the notched both sides of backbone tissue with first vaulting pole 2 and second vaulting pole 3, be located the position on horizontal pole 1 through adjusting sliding block 12, through the fixed sliding block 12 of locating part 13, just can fix the distance between first vaulting pole 2 and the second vaulting pole 3, and then enlarge the operation incision scope of strutting, the difficult control operation notched technical problem of strutting the scope of strutting of manual operation drag hook has been solved, it is adjustable to operation incision scope, be convenient for the operation, be applicable to and strut the operation incision of the different degree of depth, can not weave the technological effect who becomes the influence to the group.

For patients, when the posterior spine surgery is performed, in order to expand the expansion range or the visual field area of a tissue incision, a drag hook, a retracting device or an expansion device is selected, so that a larger visual field range can be obtained in the surgery, and the surgery can be performed orderly. The utility model discloses can play and strut the tissue incision adjustable, be applicable to the incision form of the different degree of depth, all can play the effect of strutting, do not harm the tissue. The size of the opening area for the incision can be adjusted by the displacement position of sliding block 12 along crossbar 1.

In one embodiment, fixed block 11 is fixed at one end of cross bar 1, and sliding block 12 is a frame-shaped structure having a hollow body, and the inner shape of the hollow body of sliding block 12 is matched with the longitudinal section shape of cross bar 1, and can be penetrated by cross bar 1 and can slide on cross bar 1, so as to adjust the operation visual field. The height direction of the first support rod 2 and the second support rod 3 is perpendicular to the length direction of the cross rod 1, namely the first support rod 2 and the second support rod 3 can be inserted into the side edge of the tissue incision in the vertical direction, the cross rod 1 is kept horizontal in the operation, and the cross rod 1 cannot block the operation and the visual field range.

As a specific implementation manner of the retractor for posterior spinal incision surgery, please refer to fig. 1 to 3, be equipped with on sliding block 12 and be used for driving sliding block 12 along the gliding drive portion 14 of horizontal pole 1, the rotation of drive portion 14 can drive sliding block 12 and slide along horizontal pole 1, and then can adjust the distance between sliding block 12 and fixed block 11, can play the effect of enlarging or reducing the operation incision scope, to notched strutting convenient operation.

As a specific implementation manner of the retractor for posterior spine incision surgery provided by the utility model, please refer to fig. 1-2, the retractor for posterior spine incision surgery still includes scissors handle 4, scissors handle 4 includes mutual articulated to clamping part and handheld portion, be equipped with two to the clamping end to the clamping part, handheld portion is equipped with two handheld ends that are used for the hand to grip, two are to the clamping end universal articulated with fixed block 11 and sliding block 12 respectively, scissors handle 4 can rotate on 1 length direction of perpendicular to horizontal pole and be on a parallel with horizontal pole 1 length direction respectively, extrude two handheld ends relatively and be used for driving sliding block 12 and slide along horizontal pole 1.

The scissors handle 4 is similar to a scissors handle structure, the hand-held end refers to a part which is held by a hand of a user and can be relatively extruded and exert force when the scissors handle 4 is used, and after the two hand-held ends of the hand-held part are relatively extruded, the two opposite clamping ends of the clamping part are relatively hinged and drive the sliding block 12 to slide. Scissors handle 4 is the structure of the handle of daily or domestic scissors promptly, and handheld end is two with the butt clamp end, plays the effect of scissors, extrudees or presses the handheld portion of scissors handle 4 through artifical hand, just can make sliding block 12 slide on horizontal pole 1, just can play the same operation effect with drive division 14, adjusts through scissors handle 4 and accomplishes the back, and is spacing on horizontal pole 1 with sliding block 12 through locating part 13 at last.

Specifically, the scissor handles 4 and the driving parts 14 are alternately operated separately, and when the sliding block 12 needs to be moved on the crossbar 1, one of the scissor handles 4 and the driving parts 14 can be used.

Referring to fig. 4, two opposite clamping ends of the scissors handle 4 are respectively connected with the fixed block 11 and the sliding block 12 in a universal hinge manner, that is, the scissors handle 4 can respectively rotate in a direction perpendicular to the length direction of the cross bar 1 and in a direction parallel to the length direction of the cross bar 1, the two rotation directions are arranged in a right angle, and the connection parts of the scissors handle 4, the fixed block 11 and the sliding block 12 can be connected by using a universal joint in the prior art. Wherein the universal joint is a commercially available product that is vertically and horizontally hingeable, and fig. 4 shows the two directions in which the scissor handle 4 can be rotated.

As a specific embodiment of the retractor for posterior spine incision surgery provided by the present invention, please refer to fig. 1 to 2, the first support rod 2 and the second support rod 3 both include a sleeve 21, a telescopic rod 22 and a blocking piece 23, the sleeve 21 is L-shaped, one end is fixedly connected to the fixed block 11 or the sliding block 12, and the other end is provided with a through hole; one end of the telescopic rod 22 is inserted in the through hole of the sleeve 21, the other end is a free end, the telescopic rod 22 can slide in the sleeve 21, and the insertion length in the sleeve 21 is adjustable; separation blade 23 joint is on the free end of telescopic link 22, and separation blade 23 is used for pegging graft at backbone tissue incision side, and the grafting incision degree of depth of separation blade 23 is adjusted with the help of telescopic link 22, and the tissue incision struts the scope and adjusts with the help of the interval of two separation blades 23. Because the pathological change degree of patient's backbone is different, just probably different to the incision scope of tissue, in order to adapt to the incision of the different degree of depth, then the utility model discloses the homoenergetic is operated, and telescopic link 22 is different at the flexible length of sleeve 21, then can adjust separation blade 23 and insert to the notched degree of depth.

The jackscrew is inserted into the outer wall of the sleeve 21 in a penetrating manner, the telescopic rod 22 is pushed by the jackscrew, the effect of the limiting telescopic rod 22 in the sleeve 21 can be achieved, and the effect of the total length of the limiting first support rod 2 or the limiting second support rod 3 can be achieved.

As a specific embodiment of the retractor for posterior spine incision surgery provided by the present invention, please refer to fig. 1 to 2, the blocking plate 23 is an arc blocking plate protruding toward the tissue incision side, and the blocking plate 23 of the first support rod 2 is disposed opposite to the blocking plate 23 of the second support rod 3. The outer side surface of the baffle plate 23 is directly contacted with tissues, the tissues have resilience, and the arc-shaped surface, which protrudes outwards, of the baffle plate 23 is close to the tissues and is in arc transition with the tissues, so that the tissues are prevented from being damaged; because the baffle plates 23 are used for blocking the resilience of tissues, the visual field range can be adjusted at any time in the operation by adjusting the distance between the two baffle plates 23, and the operation is more convenient.

In this embodiment, the main component that plays a role in expanding the tissue incision is the blocking plate 23, the blocking plate 23 directly contacts with the tissue, and the distance between the two blocking plates 23 can be adjusted by adjusting the distance between the first support rod 2 and the second support rod 3, so that the expansion range or the visual field area of the surgical incision can be enlarged.

As a specific embodiment of the retractor for posterior spine incision surgery according to the present invention, please refer to fig. 3, a rack 15 is disposed on the bottom end surface of the cross rod 1 in the length direction, the driving portion 14 includes a rod 141 passing through the sliding block 12 and a gear 142 disposed on the rod 141 and engaged with the rack 15 for transmission, and the sliding block 12 slides on the cross rod 1 by means of the rotation of the gear 142. Gear 142 and rod 141 are coaxially disposed, and rack 15 and gear 142 are engaged with each other, and rotating rod 141 can drive gear 142 to rotate, so as to drive sliding block 12 to slide along cross rod 1.

As a specific embodiment of the retractor for posterior spine incision surgery provided by the present invention, please refer to fig. 1 to 3, the limiting member 13 is a jack screw disposed on the sliding block 12, and the jack screw pushes the horizontal rod 1 to limit the sliding block 12. By screwing the limiting piece 13, the pushing end of the limiting piece is abutted to the cross rod 1, so that the sliding block 12 can be limited on the cross rod 1, and the operation is convenient. The stop 13 is screwed back to disengage the cross bar 1, releasing the sliding block 12.

As a specific embodiment of the retractor for posterior spine incision surgery provided in the present invention, please refer to fig. 3, a roller 16 is disposed inside the sliding block 12, and the roller 16 is connected to the upper end surface of the cross rod 1 by rolling friction. When sliding block 12 slides, in order to avoid the phenomenon of jamming and the like, smooth sliding of sliding block 12 is facilitated, and smooth sliding of sliding block 12 on cross bar 1 can be achieved through rollers 16 arranged on sliding block 12.

As a specific embodiment of the retractor for posterior spine incision surgery provided in the present invention, please refer to fig. 3, a sliding rail 121 is disposed on the inner side of the sliding block 12, and sliding grooves 122 matched with the sliding rail 121 and sliding on both sides of the cross bar 1 are disposed. The combination of the driving part 14 and the rack 15, the combination of the sliding rail 121 and the sliding groove 122, and the combination of the roller 16 and the cross bar 1, together provide support for smooth sliding of the sliding block 12, and finally, the sliding block 12 is locked on the cross bar 1 through the limiting part 13, so that the distance between the first support rod 2 and the second support rod 3 can be locked.

As a specific embodiment of the retractor for posterior spine incision surgery provided in the present invention, please refer to fig. 1, the hand-held end of the scissors handle 4 is provided with a locking portion 41 for locking the sliding position of the sliding block 12. The locking part 41 comprises an arc-shaped plate fixedly arranged on one handle and a through hole arranged on the other handle, the free end of the arc-shaped plate penetrates through the through hole, and a screw which penetrates through the through hole and is used for abutting against the arc-shaped plate to move is arranged on the through hole. Locking portion 41 may be used interchangeably with limiting member 13 and may be operated, both of which function in the same way to limit sliding block 12. Specifically, the locking portion 41 is a structure for locking the retracting range of the medical surgical retractor used in the prior art, and a screw is provided on the locking portion 41, so that the opening angle or range of the scissor handle 4 can be locked by screwing the screw.

As a specific embodiment of the retractor for posterior spine incision surgery, please refer to fig. 1, the blocking plate 23 is an arc-shaped plate of the inner concave, the joint is on the telescopic rod 22 and can be disassembled, and the outer arc edge of the arc-shaped plate is used for fitting one side edge of the spine tissue incision. In order to prevent not injuring spinal column tissue in the operation, then set up the arc of indent, all set up to the arc at separation blade 23's edge all in the periphery, separation blade 23 butt is to the incision side, compares in the separation blade 23 of right angle form, can reduce the damage to the tissue.

Specifically, the scale marks are arranged on the cross rod 1, so that the distance between the first support rod 2 and the second support rod 3 can be seen by an operator in reference to the range of the tissue incision, and the operation is facilitated.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Retractor for posterior spine incision surgery, comprising:

the sliding block is provided with a limiting piece used for limiting the sliding block;

the first support rod is arranged on the side part of the cross rod, one end of the first support rod is fixedly arranged on the side part of the fixed block, the other end of the first support rod is used for being inserted into one side of the spine tissue incision, and the length of the first support rod is adjustable; and

the second supporting rod is arranged on the side portion of the transverse rod and is arranged in parallel with the first supporting rod, one end of the second supporting rod is fixedly arranged on the side portion of the sliding block, the other end of the second supporting rod is used for being inserted into the other side of the spine tissue incision, the length of the second supporting rod is adjustable, the limiting part limits the sliding block, a space for a spine posterior incision operation is formed between the first supporting rod and the second supporting rod, and the opening range of the spine tissue incision is adjusted by means of the sliding block.

2. The retractor for posterior spinal dissection according to claim 1, wherein the sliding block is provided with a driving part for driving the sliding block to slide along the cross bar.

3. The retractor for posterior spine incision surgery according to claim 1, further comprising a scissor handle, wherein the scissor handle comprises a pair of clamping portions and a hand-holding portion which are hinged to each other, the pair of clamping portions are provided with two pair of clamping ends, the hand-holding portion is provided with two hand-holding ends for holding the hand, the two pair of clamping ends are respectively and universally hinged to the fixed block and the sliding block, the scissor handle can respectively rotate in a direction perpendicular to the length direction of the cross bar and in a direction parallel to the length direction of the cross bar, and the two hand-holding ends are relatively squeezed to drive the sliding block to slide along the cross bar.

4. The posterior spine incision surgical retractor of claim 1, wherein the first and second struts each comprise:

the sleeve is L-shaped, one end of the sleeve is fixedly connected with the fixed block or the sliding block, and the other end of the sleeve is provided with a through hole;

one end of the telescopic rod is inserted in the sleeve penetrating hole, the other end of the telescopic rod is a free end, the telescopic rod can slide in the sleeve, and the inserting length in the sleeve is adjustable; and

the separation blade, the joint is in on the free end of telescopic link, the separation blade is used for pegging graft at backbone tissue incision side, the grafting incision degree of separation blade is with the help of the telescopic link is adjusted, and the tissue incision struts the scope with the help of two the interval adjustment of separation blade.

5. The posterior spine incision surgical retractor of claim 4, wherein the blocking plate is an arc-shaped blocking plate protruding toward the tissue incision side, and the blocking plate of the first support bar is disposed opposite to the blocking plate of the second support bar.

6. The retractor for posterior spine incision of claim 2, wherein a rack is formed on a bottom end surface of the cross bar in a length direction, the driving part comprises a rod body passing through the sliding block and a gear disposed on the rod body and engaged with the rack for driving, and the sliding block slides on the cross bar by rotation of the gear.

7. The posterior spine incision surgical retractor according to claim 1, wherein the stopper is a jack screw provided on the sliding block, and the jack screw pushes the cross bar to limit the sliding block.

8. The posterior spine incision surgical retractor of claim 1, wherein a roller is disposed inside the sliding block, and the roller is in rolling friction engagement with the upper end surface of the cross bar.

9. The retractor for posterior spine incision surgery according to claim 1, wherein the sliding block is provided with a sliding rail at the inner side, and sliding grooves matched with and slidably connected with the sliding rail are arranged at both sides of the cross bar.

10. A posterior spine incision surgical retractor according to claim 3, wherein the handle portion of the scissor handle is provided with a locking portion for locking the sliding position of the sliding block.