CN202113153U

CN202113153U - Spinal space fixator

Info

Publication number: CN202113153U
Application number: CN201120189126XU
Authority: CN
Inventors: 颜宗宝
Original assignee: GREATOP INTERNATIONAL Corp
Current assignee: GREATOP INTERNATIONAL Corp
Priority date: 2011-06-07
Filing date: 2011-06-07
Publication date: 2012-01-18
Anticipated expiration: 2021-06-07

Abstract

The utility model discloses a spinal space fixator, which comprises a positioning annular groove on the fixator body. A bullet-shaped drill bit is arranged on one side of the positioning annular groove, a stop plate is arranged on the other opposite side of the positioning annular groove, the drill bit is provided with at least one spiral guide groove extending to the positioning annular groove from the front end edge of the drill bit, a pivoting structure is arranged on the outer side of the stop plate, the pivoting structure can be connected with a knob for the purpose of screwing the fixator between two adjacent spines, and the positioning annular groove is used for containing an upper spinous process and a lower spinous process to be fixed so as to stabilize the spinal space.

Description

Sour jujube gap holder

Technical field

This utility model relates to a kind of sour jujube gap holder, refers to that especially a kind of Minimally Invasive Surgery capable of using implants between two adjacent sour jujubes with the fixing holder in sour jujube gap.

Background technology

Vertebrae disease mostly is by long-term fault, sport injury or along with factors such as age ageing cause; Many vertebral diseases; Like spinal canal stenosis or intervertebral disk hernia etc.,, disease is accompanied by symptoms such as serious sciatica, limping or neuropathy when sending out, particularly through regular meeting; When damage at the rear portion of an intervertebral disc; The stretching, extension of vertebra can make two vertebraes separated by this dish and normally not draw close mutually, and this result can make nerve root sticked and produce the serious pain sensation, causes patient to go up in action and produces puzzlement.Usually this type vertebral disease can't use cured substance, is with operative treatment through the effective means of verifying, the implantation fixture to drawing close each other, produces unfavorable characteristics such as pain with the extension of restriction vertebrae when avoiding patient in action between the adjacent sour jujube of fault; And the conventional surgical mode is median line incision fascia and supraspinal ligament from patients back, and the muscle on vertebra side is pulled away and will be attached to supraspinal tendon cut-out along periosteum, then fixture is planted between the spinous process of vertebra; This type of is operated on operation and has an infringement property, and complicated operating process, operating time are long, and wound greatly, rehabilitation period is longer; Particularly; Patient's part vertebra ligament and muscle, tendon are damaged in the operation process, even therefore operation back muscle is sewed up, but muscle and tendon can't be returned to original usefulness fully; And the supraspinal ligament that is excised, vertebra sour jujube and interspinal ligaments are prone to cause the instability of postoperative spinal column.

The utility model content

This utility model is the sour jujube gap holder that a kind of novelty is provided for improving foregoing problems, and it is suitable for and executes work with Minimally Invasive Surgery; This holder is screwed into mode with the side to plant between the adjacent sour jujube of fault; With the fixing gap of spinous process, can reach the advantage that wound is little and disorganization is few, can protect near the nervous tissue the human vertebra simultaneously; Increase operation safety, and improve traditional operation at one stroke and have many shortcomings.

According to this utility model; This sour jujube gap holder mainly comprises: on retainer body, establish a location annular groove, be provided with a bullet type drill bit in this positioning ring groove one side, at the opposite side of subtend tool one stop plate then; And on this drill bit, be provided with at least one helical guide groove; Extend on this positioning ring groove by this chisel edge edge, be provided with pin-jointed structure in this stop plate lateral surface again, can and an erecting tools winding this holder is screwed between two adjacent sour jujubes; Utilize this positioning ring groove to treat between fixed upper aristate process and the following spinous process, to reach the purpose of stablizing the sour jujube gap with ccontaining.

According to this utility model, the groove specification of this helical guide groove is descending setting, and it can prevent this helical guide groove behind the fixed position that screws between two adjacent sour jujubes, withdraws from this fixed position because of the external force influence easily.

According to this utility model; This sour jujube gap holder uses composite or alloy material to be processed into one-body molded mode, and wherein, this composite is to be selected from carbon fibre, polyether-ether-ketone (PEEK; Poly etherether kefone) etc.; And this alloy material is to be selected from titanium alloy, tantalum alloy, rustless steel etc., but practical range do not exceed with previous materials, all kinds ofly is fit to plant the biocompatible material of in human body, using with good mechanical strength and anti-chemical and all is suitable for.

According to this utility model, this positioning ring groove has the dimensions of different sizes, and adapting to the affected part of diverse location, and its cross section can be arbitrary shape, like circular, ellipse or polygon etc.

Again according to this utility model; This pin-jointed structure comprises a screw and at least one positioning jack, can also understand, and aforementioned pin-jointed structure also can be made as the hole shape that can cooperate multi-form erecting tools or the joint structure of groove shape; So that in response to the actual demand on the operation technique; Make this holder can combine the erecting tools that suits, convenient operation this holder is rotated between two adjacent sour jujubes, and be mounted to required fixed position.

The sour jujube gap holder of this utility model can use Minimally Invasive Surgery to be implanted in the spinous process gap of trouble location by the vertebra side; Operation technique is easy fast; The small recovery of wound is rapid; And the implant surgery process need not block ligament, tendon or destroy the anatomical structure of patient's ridge between prominent, can reduce the injury to patient, and guarantee that spinal structure can recover original activity usefulness fully after operation more; In addition, this utility model holder has perfectly round bullet type drill bit 1, when its rotary drill during through adjacent sour jujube gap, can avoid sharp perienchyma caused to cut to scrape destruction, thereby significantly reduce the risk of injured nerve tissue; Again, this holder adopts polyether-ether-ketone (PEEK) material to process, and the character of this biocompatible material is very near human vertebra intensity, can reduce settlement action and to the wear damage of vertebra.

This will have the knack of and can realize this utility model according to this after present technique is pored over the explanation in the literary composition in other function and the technical characterictic of hereinafter further illustrating this utility model.

Description of drawings

Fig. 1 is the axonometric chart of this utility model embodiment;

Fig. 2 cuts open the side view that shows for the part of this utility model embodiment;

Fig. 3 is the axonometric chart of another angle of this utility model embodiment;

Fig. 4 is the holder of this utility model and revolves the sketch map of combination;

Fig. 5 is installed in the floor map in adjacent sour jujube gap for the holder of this utility model; And

Fig. 6 is installed in the side schematic view in adjacent sour jujube gap for the holder of this utility model.

The specific embodiment

To this utility model embodiment shown in Figure 3, the body of this sour jujube gap holder slightly is the bullet shaped configuration like Fig. 1, and it is made by polyetheretherketonematerials materials is one-body molded, has good mechanical strength and anti-chemical, therefore is fit to very much plant in human body use; The front end position of this retainer body has the bullet type drill bit 1 of the perfectly round smoothness of moulding; Be provided with positioning ring groove 2 at the position, stage casing; And have a helical guide groove 3 to extend on this positioning ring groove 2, and this helical guide groove 3 have by big gradually little groove specification by this drill bit 1 leading edge; Distal portion in this retainer body is provided with a stop plate 4 in addition, and on the end face of the outside of this stop plate, is provided with a screw 41 and a pair of positioning jack 42.

Sour jujube gap holder like the aforementioned structure characteristic; When using Minimally Invasive Surgery (or being called endoscopy surgery) to install, passing muscle with the sleeve (generally being about about 2cm) of a minor diameter is arrived by the side near the adjacent sour jujube gap of vertebra trouble location; In this sleeve, wear a microcamera again; And then the visual field passed on be projected on the indicator screen; And carry out the accurate location (the above drawing that is not shown in) of operative site; Then; Revolve with one and to be articulated in the collocation of the movable bolt 51 of 5 front ends and locating detent 52 (as shown in Figure 4) on the screw 41 and positioning jack 42 of this sour jujube gap holder rear end face, this revolves mat and articulates these sour jujube gap holders to 5 and arrive at the vertebra trouble location through aforementioned sleeve, utilizes this to revolve the guiding of rotating the helical guide groove 3 on propelling and this holder to 6 again; Make the bullet type drill bit 1 of this sour jujube gap holder drill through the physiological tissue in the two adjacent spinous process gaps, and the positioning ring groove 2 of this sour jujube gap holder is just rested between upper aristate process 62 and the following spinous process 63 (like Fig. 5 and shown in Figure 6) at the situation underspin that does not block supraspinal ligament 61; And, can reach the purpose of stablizing the sour jujube gap, with the various unfavorable characteristic of avoiding the undesired compressing limit in adjacent sour jujube gap to be caused by the holder of implanting this utility model in the adjacent sour jujube gap of vertebra trouble location.

Can know in sum; The sour jujube gap holder of this utility model can use Minimally Invasive Surgery to be implanted in the spinous process gap of trouble location by the vertebra side; Operation technique is easy fast, and the small recovery of wound is rapid, and the implant surgery process need not blocked ligament, tendon or destroyed the anatomical structure of patient's ridge between prominent; Can reduce injury, and guarantee that spinal structure can recover original activity usefulness fully after operation more patient; In addition, this utility model holder has perfectly round bullet type drill bit 1, when its rotary drill during through adjacent sour jujube gap, can avoid sharp perienchyma caused to cut to scrape destruction, thereby significantly reduce the risk of injured nerve tissue; Again, this holder adopts polyether-ether-ketone (PEEK) material to process, and the character of this biocompatible material is very near human vertebra intensity, can reduce settlement action and to the wear damage of vertebra.

The above embodiment that lifts; Only use to convenient and explain that this utility model is not in a limitative way; Do not leaving this utility model spirit category; Be familiar with various simple and easy distortion and modification that this industry skill personage is done according to this utility model claim and utility model explanation, all must include in the scope of claims.

Claims

1. sour jujube gap holder; It is characterized in that, on this retainer body, establish a location annular groove, be provided with a bullet type drill bit in this positioning ring groove one side; At the opposite side of subtend tool one stop plate then; And on this drill bit, be provided with at least one helical guide groove, extend on this positioning ring groove, and be provided with pin-jointed structure in this stop plate lateral surface by this chisel edge edge.

2. sour jujube as claimed in claim 1 gap holder is characterized in that the groove specification of this helical guide groove is descending setting.

3. sour jujube as claimed in claim 1 gap holder is characterized in that this pin-jointed structure comprises a screw and at least one positioning jack.