Device for supporting and fixing soft tissue channel in minimally invasive spine surgery

Abstract

The utility model aims to provide a device for supporting and fixing a soft tissue channel in a minimally invasive spine surgery, which relates to the technical field of medical instruments and is characterized in that during use, the device is clamped and fixed on two sides of the body of a patient through a clamping plate of a fixing bracket, and a ball head structure is arranged on the fixing bracket; the ball head structure is connected with the expander by arranging a telescopic connecting rod; the dilator can be adjusted to move to a spinal operation channel position through stretching and retracting of the telescopic connecting rod; the dilator can be flexibly adjusted in multiple angles and multiple directions through a ball head structure according to the direction of a spinal operation channel, so that a plurality of telescopic dilating plates arranged on the dilator mounting seat in a circumferential array extend into the spinal operation channel; the connecting plates on the telescopic expansion plates are driven to slide in the radius direction of the mounting seat by rotating the adjusting rings on the mounting seat, so that the telescopic expansion plates are driven to synchronously move towards the inner wall of the spinal operation channel, and the channel can be effectively supported and fixed in multiple directions according to the diameter of the spinal operation channel.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument related technical field especially, a device for spinal column minimally invasive surgery soft tissue channel support fixed. BACKGROUND

[0002] Spinal column operation channel device is generally used for spinal column minimally invasive surgery, and the purpose is to block the surrounding muscle tissue, facilitate operation.

[0003] The existing channel fixing mode and the existing problems include: manual hand holding method, which needs a medical assistant to hold the working channel during the whole operation process, cannot shake, but the holding force of the hand is often not enough, which is easy to cause the change of angle and position;

[0004] Bed frame fixing method, including a set of relatively complex bedside fixing frame, one end of the fixing frame is a bedside support, which is fixed on the bed frame of the operating bed, and the other end is provided with a working channel pipe, which is used for implanting pedicle screw, decompressing spinal canal, removing intervertebral disc and fusing intervertebral object, and the bedside support and the working channel are connected through a serpentine support, which is not only heavy, high in cost and complicated to use, and the stability is not enough;

[0005] Floor fixing method, including a set of complex structure and heavy mechanical arm, which can be placed on the ground stably, and the working channel is installed and fixed through the mechanical arm, the equipment is heavy and inconvenient to operate. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides the following technical scheme:

[0007] A device for supporting and fixing soft tissue channel for spinal column minimally invasive surgery, comprising a fixing support, a dilator movably installed on the fixing support, the dilator comprising a ring-shaped mounting seat and an adjusting ring, a plurality of telescopic expansion plates are arranged in a circumferential array at the middle through hole of the mounting seat, the outer side of the telescopic expansion plate is slidably connected with the mounting seat through a fixedly arranged connecting plate, the adjusting ring is rotatably installed above the mounting seat, the connecting plate is controlled to slide along the radial direction of the mounting seat by rotating the adjusting ring, so that the plurality of telescopic expansion plates are simultaneously moved towards or away from the center of the mounting seat.

[0008] Further, the connecting plate slides along the radial direction of the mounting seat and is inserted into the mounting seat, a plurality of inclined grooves are arranged in a linear array on the connecting plate, a plurality of short columns are fixedly arranged in a circumferential array at the lower end of the adjusting ring, the short columns slide in the inclined grooves, the short columns are driven to slide along the inclined grooves by rotating the adjusting ring, so that the connecting plate slides.

[0009] Further, the number of short columns sliding in the inclined grooves of the connecting plate is one, and when one short column is just rotated and slides out of the inclined groove, the next short column is just sliding into the next inclined groove.

[0010] Further, the upper end of the telescopic expansion plate is rotationally provided with an adjusting screw rod, the adjusting screw rod penetrates into the telescopic expansion plate, the telescopic expansion plate is threadedly sleeved on the adjusting screw rod, and the telescoping of the telescopic expansion plate is controlled by rotating the adjusting screw rod.

[0011] Further, the expander and the fixed support are movably connected through a ball head structure.

[0012] Further, the ball head structure comprises a ball core and a ball shell, the ball shell is fixedly connected with the fixed support, the ball core is movably installed in the ball shell, a bushing is formed in the ball shell, an expansion connecting rod is fixedly arranged on the ball core, the expansion connecting rod penetrates out of the bushing and is fixedly connected with the mounting seat of the expander.

[0013] A locking bolt is mounted on the expansion connecting rod, the expansion of the expansion connecting rod is limited by tightening the locking bolt, a fixing bolt is threadedly mounted on the ball shell, the fixing bolt threadedly penetrates through the ball shell and contacts the ball core, and the movement of the ball core is limited by tightening the fixing bolt.

[0014] Further, the fixed support comprises a double-head telescopic plate, side telescopic plates are fixedly arranged on the two sides of the double-head telescopic plate, clamping plates are fixedly arranged on the telescopic ends of the side telescopic plates, and silica gel pads are arranged on the clamping plates.

[0015] A limiting bolt is arranged on the double-head telescopic plate, the telescoping of the double-head telescopic plate is limited by tightening the limiting bolt, and the expander is movably installed on the double-head telescopic plate.

[0016] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0017] 1. The ball head structure is arranged on the fixed support, the expansion connecting rod is arranged on the ball head structure and connected with the expander, the expander can be moved to the position of the spinal surgery channel through the expansion and contraction of the expansion connecting rod, the expander can be adjusted at multiple angles and in multiple directions according to the direction of the spinal surgery channel through the ball head structure, the telescopic expansion plates arranged in the circumferential array on the mounting seat of the expander are inserted into the spinal surgery channel, the connecting plates on the telescopic expansion plates are slid along the radial direction of the mounting seat by rotating the adjusting ring on the mounting seat, so that the telescopic expansion plates are synchronously moved to the inner wall of the spinal surgery channel, and the spinal surgery channel can be effectively supported and fixed from multiple directions according to the diameter of the spinal surgery channel.

[0018] 2, the utility model discloses a fixed bolster includes double -end telescopic board, and the both sides fixed setting of double -end telescopic board has side telescopic board, and the fixed setting of the extension end of side telescopic board has clamping plate, the interval of the both sides side telescopic board can be adjusted through the telescopic of double -end telescopic board, thereby can adjust the interval of two clamping plates according to the body shape of patient, and the interval of clamping plate and double -end telescopic board can be adjusted through the telescopic of side telescopic board, thereby can effectively hold and fix the device on the both sides of the body of patient, guarantees the stability of dilator. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is three -dimensional structure schematic drawing for the utility model;

[0020] Figure 2 It is dilator structure schematic drawing for the utility model;

[0021] Figure 3 It is dilator cross section structure schematic drawing for the utility model;

[0022] Figure 4 It is dilator cross section A place enlarged schematic drawing for the utility model.

[0023] In the drawing: double -end telescopic board -1, side telescopic board -2, clamping plate -3, ball head structure -4, telescopic connecting rod -5, dilator -6, mounting seat -61, adjusting ring -62, short column -621, telescopic expansion board -63, connecting plate -64, adjusting screw -65, limit bolt -7, fixed bolt -8, locking bolt -9. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] Embodiment 1:

[0026] Please refer to Figures 1-4The utility model provides a device for the support and fixation of soft tissue channel in minimally invasive surgery of spine, which comprises a fixing support, a dilator 6 movably installed on the fixing support, the dilator 6 comprising a ring-shaped mounting seat 61 and an adjusting ring 62, a plurality of telescopic expansion plates 63 are arranged in a circumferential array at the middle through hole of the mounting seat 61, the outer side of the telescopic expansion plates 63 is slidably connected with the mounting seat 61 through a fixedly arranged connecting plate 64, the adjusting ring 62 is rotatably installed above the mounting seat 61, the connecting plate 64 is controlled to slide along the radial direction of the mounting seat 61 by rotating the adjusting ring 62, thereby driving the plurality of telescopic expansion plates 63 to move synchronously towards or away from the center of the mounting seat 61.

[0027] In the embodiment, the connecting plate 64 is inserted into the mounting seat 61 along the radial direction of the mounting seat 61, a plurality of inclined grooves are linearly arranged in the connecting plate 64, a plurality of short columns 621 are fixedly arranged in a circumferential array at the lower end of the adjusting ring 62, the short columns 621 are slidably arranged in the inclined grooves, the connecting plate 64 is driven to slide by rotating the adjusting ring 62 to drive the short columns 621 to slide along the inclined grooves; the number of the short columns 621 slidably arranged in the inclined grooves of the connecting plate 64 is one, when the one short column 621 is just rotated and slid out of the inclined groove, the next short column 621 is just slid into the next inclined groove.

[0028] In the embodiment, the connecting plate 64 on the telescopic expansion plate 63 is driven to slide along the radial direction of the mounting seat 61 by rotating the adjusting ring 62 on the mounting seat 61, thereby driving the plurality of telescopic expansion plates 63 to move synchronously towards the inner wall of the channel for spine surgery, the channel can be effectively supported and fixed from multiple directions according to the diameter of the channel for spine surgery.

[0029] Embodiment 2

[0030] Please refer to Figures 1-4 According to embodiment 1, the telescopic expansion plate 63 is provided with an adjusting screw 65 rotatably arranged at the upper end, the adjusting screw 65 penetrates into the telescopic expansion plate 63, the protruding end of the telescopic expansion plate 63 is threadedly connected with the adjusting screw 65, the telescopic expansion plate 63 is controlled to be telescoped by rotating the adjusting screw 65, thereby adjusting the length of the telescopic expansion plate 63 inserted into the channel for spine surgery, the length is flexibly adjusted according to the depth of the channel, and the channel for spine surgery is effectively supported.

[0031] Embodiment 3

[0032] Please refer to Figures 1-4, according to embodiment 1-2, the expander 6 is movably connected with the fixed support through the setting ball head structure 4, the ball head structure 4 includes ball core, ball shell, the ball shell is fixedly connected with the fixed support, the ball core is movably installed in the ball shell, the ball shell is provided with the insertion hole, the telescopic connecting rod 5 is fixedly arranged on the ball core, and the telescopic connecting rod 5 is fixedly connected with the mounting seat 61 of the expander 6 by passing out of the insertion hole;The telescopic connecting rod 5 is provided with locking bolt 9, the telescopic connecting rod 5 is limited by tightening locking bolt 9, the ball shell is screw-mounted fixed bolt 8, and the fixed bolt 8 is in contact with the ball core by screwing through the ball shell, and the activity of the ball core is limited by tightening the fixed bolt 8;

[0033] In the embodiment, the ball head structure 4 is provided on the fixed support, and the ball head structure 4 is connected with the expander 6 by setting the telescopic connecting rod 5;The telescopic connecting rod 5 can be adjusted to move the expander 6 to the position of the spinal surgery channel;Through the ball head structure 4, the expander 6 can be flexibly adjusted at multiple angles and in multiple directions according to the direction of the spinal surgery channel, so that the plurality of telescopic expansion plates 63 arranged in the circumference of the mounting seat 61 of the expander 6 extend into the spinal surgery channel.

[0034] Embodiment 4:

[0035] Please refer to Figures 1-4 , according to embodiment 1-3, the fixed support includes double telescopic plate 1, and the two sides of the double telescopic plate 1 are fixedly provided with side telescopic plate 2, and the extending end of the side telescopic plate 2 is fixedly provided with clamping plate 3, and the clamping plate 3 is provided with silica gel pad;The double telescopic plate 1 is provided with limiting bolt 7, the telescopic plate 1 is limited by tightening limiting bolt 7, and the expander 6 is movably mounted on the double telescopic plate 1;

[0036] In the embodiment, the fixed support includes double telescopic plate 1, and the two sides of the double telescopic plate 1 are fixedly provided with side telescopic plate 2, and the extending end of the side telescopic plate 2 is fixedly provided with clamping plate 3;The distance between the two side telescopic plates 2 can be adjusted by the telescopic adjustment of the double telescopic plate 1, so that the distance between the two clamping plates 3 can be adjusted according to the body type of the patient, and the distance between the clamping plate 3 and the double telescopic plate 1 can be adjusted by the telescopic adjustment of the side telescopic plate 2, so that the device can be effectively clamped and fixed on the two sides of the patient's body, and the stability of the expander 6 is guaranteed.

[0037] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents.

Claims

1. A device for soft tissue access support fixation in minimally invasive spinal surgery comprising a fixation bracket, characterized in that, The expander is movably arranged on the fixing support, the expander comprises an annular mounting seat, an adjusting ring, a plurality of telescopic expansion plates are arranged in a circumferential array at the middle through hole of the mounting seat, the outer side of the telescopic expansion plate is slidably connected with the mounting seat through a fixedly arranged connecting plate, the adjusting ring is rotatably arranged above the mounting seat, the connecting plate is controlled to slide along the radial direction of the mounting seat by rotating the adjusting ring, thereby driving the plurality of telescopic expansion plates to move synchronously towards or away from the center of the mounting seat.

2. The device for soft tissue access channel support and fixation for minimally invasive spinal surgery of claim 1, wherein, The connecting plate is slidably inserted into the mounting seat along the radial direction of the mounting seat, a plurality of inclined grooves are linearly arranged on the connecting plate, a plurality of short columns are fixedly arranged in a circumferential array at the lower end of the adjusting ring, the short columns are slidably arranged in the inclined grooves, the short columns are controlled to slide along the inclined grooves by rotating the adjusting ring, thereby driving the connecting plate to slide.

3. The device for soft tissue access channel support and fixation for minimally invasive spinal surgery of claim 2, wherein, The number of short columns slidably arranged in the inclined grooves of the connecting plate is one, when the one short column is just rotated and slid out of the inclined groove, the next short column is just slid into the next inclined groove.

4. The device for soft tissue access channel support and fixation for minimally invasive spinal surgery of claim 1, wherein, An adjusting screw is rotatably arranged at the upper end of the telescopic expansion plate, the adjusting screw penetrates into the telescopic expansion plate, the extended end of the telescopic expansion plate is threadedly sleeved on the adjusting screw, the telescopic expansion plate is controlled to be telescoped by rotating the adjusting screw.

5. The device for soft tissue access channel support and fixation for minimally invasive spinal surgery of claim 1, wherein, The expander and the fixing support are movably connected through a ball head structure.

6. The device for soft tissue access channel support and fixation for minimally invasive spinal surgery of claim 5, wherein, The ball head structure comprises a ball core and a ball shell, the ball shell is fixedly connected with the fixing support, the ball core is movably arranged in the ball shell, a socket is formed in the ball shell, a telescopic connecting rod is fixedly arranged on the ball core, the telescopic connecting rod penetrates out of the socket and is fixedly connected with the mounting seat of the expander. A locking bolt is arranged on the telescopic connecting rod, the telescopic connecting rod is controlled to be telescoped by tightening the locking bolt, a fixed bolt is threadedly arranged on the ball shell, the fixed bolt threadedly penetrates through the ball shell and contacts the ball core, the ball core is controlled to be movable by tightening the fixed bolt.

7. The device for soft tissue access channel support and fixation for minimally invasive spinal surgery of claim 1, wherein, The fixing support comprises a double-headed telescopic plate, side telescopic plates are fixedly arranged on both sides of the double-headed telescopic plate, clamping plates are fixedly arranged on the extended ends of the side telescopic plates, silica gel pads are arranged on the clamping plates. Limiting bolts are arranged on the double-headed telescopic plate, the double-headed telescopic plate is controlled to be telescoped by tightening the limiting bolts, the expander is movably arranged on the double-headed telescopic plate.

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