CN204909619U - Filling device in advance in bone behind centrum in protruding plastic operation - Google Patents

Abstract

The utility model discloses a filling device in advance in bone behind centrum in protruding plastic operation, it includes work pipe, push rod, spring silk, and the spring silk is placed in the work pipe, and push rod and work pipe phase -match push fill area in advance with the spring silk in by the work pipe, and the spring silk is lax state in the work pipe, the diffusion is set up after the space for bone cement to the sacculus in the operation, adopt the push rod with the spring silk push should spread the space in, get into receive spring silk itself behind the space curl masterpiece usefulness, this spring silk contracts globularly for irregularly to play the effect of buffering bone cement, thereby reduce the possibility of bone cement seepage, increase the operation security.

Description

Pre-filled device in bone in a kind of kyphoplasty operation

Technical field

This utility model relates to pre-filled device in the bone in the operation of a kind of kyphoplasty, for in the operation of pedicle of vertebral arch approach Vertebral body compress ional fracture, be particularly useful for lumbar-thoracic spine osteoporosis subside type fracture recovery, belong to vertebral column minimally invasive technical field.

Background technology

Lumbar vertebra compression fracture is the illness that spinal surgery is common clinically, along with the theory of modern spinal surgery develops, increasing needs of patients is treated surgically, structure and the function of postoperative patients's spinal column are recovered, but always have some patients owing to highly losing after the reduction of the fracture, the complication such as soleplate subsides, the pain of postoperative often residual lower back, makes troubles to the Working Life of patient.How to improve the curative effect after lumbar vertebra compression fracture, reduce sequela and become one of current spinal surgeons facing challenges; Simultaneously, along with the increase of proportion of aged population and the change of people life style, Osteoporotic Vertebral Compression Fractures (osteoporoticvertebralcompressionfractures, OVCF) patient also increases year by year, and compression fracture of vertabral body is medical problem common in world wide with having an intense pain.

The traditional Therapeutic Method of Osteoporotic Vertebral Compression Fractures comprises lies up, applies analgesic drug product and treatment primary disease etc.But lie up and can increase the weight of bone loss, muscle rigidity and local pain, the treatment onset of primary disease is slower simultaneously, pain is difficult to alleviate at short notice makes patients ' life quality decline, and this kind of gerontal patient is difficult to bear the very large spinal operation of damage, therefore there is the extensive concern being subject to spinal surgery doctor immediately in vertebroplasty one.

Vertebroplasty (Vertebroplasty) is used at first describing and is directly implanted in vertebral body by coagulability material bone cement, strengthens vertebral body biomechanical strength, the object of the lumbar and back pain that prevents from subsiding, alleviate to reach.1987, neuroradiologist Galibert and Deramond of France first reported the C2 vertebral body spongy body racemose hemangioma of the routine long pain of application percutaneous vertbroplasty (percutaneousvertebroplasty, PVP) successful treatment 1.After this, this technology promptly becomes one of system of selection of the treatment vertebral compression fracture relevant with osteoporosis.

1994, the development and designs such as U.S. Reiley go out a kind of expansiveness sacculus, percutaneous puncture inserts vertebral body, vertebral height is recovered by balloon expandable, correct kyphosis deformity, therefore this technology is called as balloon kyphoplasty (kyphoplasty), and obtained in 1998 U.S. FDA approval be applied to clinical.Balloon kyphoplasty is actually a kind of variant of vertebroplasty, is the development of vertebroplasty.In recent years, scholars start the research carrying out vertebroplasty and balloon kyphoplasty treatment Osteoporotic vertebral fracture and traumatic lumbar vertebra compression fracture, actively expand the clinical application range of this technology.Percutaneous vertbroplasty and balloon kyphoplasty energy rapid pain relief and early functional exercise, make surgical intervention local osteoporosis become possibility, and provide time and chance for follow-up medicine etiological treatment osteoporosis.Have a large amount of bibliographical informations both at home and abroad, to vertebroplasty and rear convex plasty curative effect make an affirmation.

The mode of most operation for thoracolumbar fractures treatment is that way of escape closed reduction pedicle nail bar system is fixed, this modus operandi wound is little, reset is satisfied, fixed, it is comparatively safe to operate, and trans-pedicle spinal fixation technique is still considered to one of desirable method of lumbar vertebra compression fracture so far.But posterior approach, while vertebra vertebral height is hindered in recovery, fails to make the bone trabecula of compression failure to revert to original trabecular bone structure, so that in vertebral body, produce " eggshell sample (Eggshell) " change., often there is Cartilaginous end-plate rupture in especially Burst Fracture, intervertebral disc and cracked soleplate are clamp-oned in vertebral body, makes front center pillar lose structural integrity.Pedicle injects spongy bone in vertebral body, is once once promoted, but Knop etc. show with some researchs of Alanay etc., and this method can not rebuild vertebral body strength and stability, can not reduce the incidence rate of Unstable internal fixation and Loss of correction.

In operation, the filling of bone cement is key one step of operation success or failure, and main problems faced is clinically at present: in order to reach the object that bone cement evenly distributes in bone, often wish the diffusion that it can be good; But diffusion velocity very easily causes the seepage of bone cement too soon, cause the immediate symptoms such as the acute pulmonary embolism of patient, pressing spine nerve.

The states of matter situation that bone cement injects for this reason is exactly the key node of art, and bone cement powder and fusion agent are mainly rule of thumb reconciled into " hot candied shape " and reinject in vertebral body by current doctor.And this kind of method too relies on clinical experience, " hot candied shape " is one and compares the states of matter index being difficult to quantize, depend on the perception of clinician to states of matter, if the incorrect bone cement that likely causes of perception crosses sticky or excessively rare situation, bone cement is crossed to be stained with to cause and is injected uneven situation, crosses rare, likely causes bone cement seepage to cause the neural equivalent risk of acute pulmonary embolism, pressing spine.

This utility model is intended adopting the spring wire of human implantable to make a kind of object, carried out pre-filled inject bone cement in art before, the characteristic good according to the contractility of spring wire, it can play the effect slowing down bone cement flow velocity, and then reaches the risk reducing bone cement seepage.

Summary of the invention

The purpose of this utility model improves for bone cement injection process safety in kyphoplasty operation and proposes, utilize the contractility of implantable spring wire, pre-filled device in a kind of bone is provided, solves in art because the mobility of bone cement and diffusibility bring the contradiction between operation safety, post surgery stabilization.

Pre-filled device in bone in kyphoplasty operation of the present utility model, comprise working tube, push rod, spring wire, spring wire is positioned in working tube, push rod and working tube match and by spring wire by pushing pre-filled region in working tube, spring wire is relaxed state in working tube.

Described push rod one end band jug.

Described working tube is external diameter 3.0-3.8 ㎜, and length is the hollow pipe of 20-24 ㎝.

Its key is:

1, spring wire is that the metal material of human implantable is made, and length is suitable with working tube length in a relaxed state, length 20-23 ㎝, and push rod length is about 25-30 ㎝;

2, in the preoperative, this spring wire is stored in working tube in relaxed state;

3, in operation, sacculus is after bone cement sets up diffusion space, push rod is adopted to push in this space by spring wire by working tube, be subject to power of the curling effect of spring wire oneself and the restriction of space size after entering space, it is spherical that this spring wire is punctured into the irregular metal of diameter between 5-7 ㎜;

4, then, take pictures under X-ray machine, check the position of spring wire in vertebral body, judge whether that needs are replanted into spring wire, as space is also comparatively large, can continue to implant spring wire;

5, last, withdraw from working tube and terminate injection process.

Effect of the present utility model is:

This utility model has the advantage improving pyramid plastic operation safety, runs into the flow velocity that this pre-filled spring wire can slow down bone cement, thus reach the object preventing bone cement seepage when bone cement injects, and increases operation safety.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model device;

Fig. 2 is the structural representation of this utility model device working tube and spring wire;

Fig. 3 is the structural representation of utility model works conduit;

Fig. 4 be in this utility model spring wire view is set;

Fig. 5 is the structural representation of push rod in this utility model;

Fig. 6 is the view in this utility model after spring wire filling;

In figure: 1-working tube, 2-push rod, 3-spring wire.

Detailed description of the invention

Below by drawings and Examples, this utility model is described in further detail, but this utility model protection domain is not limited to described content.

Embodiment 1: as Figure 1-5, in bone in the operation of this kyphoplasty, pre-filled device comprises working tube 1, push rod 2, spring wire 3, spring wire 3 is positioned in working tube 1, push rod 2 and working tube 1 match and spring wire 3 are pushed pre-filled region by working tube 1, spring wire is in relaxed state in working tube, and length is 20cm; The rustless steel hollow pipe that working tube is external diameter 3.5 ㎜, length is 20 ㎝, push rod is diameter is 3.2 ㎜, length is 25 ㎝ stainless steels with handles, and spring wire is the spring wire of medical implantable metal;

During use, in operation, sacculus is after bone cement sets up diffusion space, push rod 2 is adopted to push in this space by spring wire by working tube, the metal being subject to spring wire oneself after entering space curls the restriction of power effect and space size, this wire contracts is the irregular metal ball of diameter between 5-7 ㎜, to play the effect of buffering bone cement.

Take pictures under X-ray machine, check the position of metal spring silk in vertebral body, judge whether that needs are replanted into metal spring silk, as space is also comparatively large, implanted metal spring wire can be continued;

Finally, after reaching satisfied filling effect, working tube is withdrawn from, end-of-fill (see figure 6).

Embodiment 2: the present embodiment apparatus structure is with embodiment 1, and difference is that push rod one end is without handle, spring wire is in relaxed state in working tube, and length is 23cm; The rustless steel hollow pipe that working tube is external diameter 3 ㎜, length is 24 ㎝, the stainless steel that push rod is diameter is 2.7 ㎜, length is 30 ㎝, spring wire is the spring wire of medical metal.

Claims (3)

1. pre-filled device in the bone in a kyphoplasty operation, it is characterized in that: comprise working tube, push rod, spring wire, spring wire is positioned in working tube, push rod and working tube match and by spring wire by pushing pre-filled region in working tube, spring wire is relaxed state in working tube.

2. pre-filled device in the bone in kyphoplasty operation according to claim 1, is characterized in that: push rod one end band jug.

3. pre-filled device in the bone in kyphoplasty operation according to claim 1 and 2, is characterized in that: working tube is the hollow pipe of external diameter 3.0-3.8 ㎜.