CN203107257U

CN203107257U - Minimally invasive lengthened arm pedicle screw

Info

Publication number: CN203107257U
Application number: CN 201320016324
Authority: CN
Inventors: 张文志; 胡志勇; 黄锡艺; 李洪艳
Original assignee: Beijing Fule Science & Technology Development Co Ltd
Current assignee: Beijing Fule Science & Technology Development Co Ltd
Priority date: 2013-01-14
Filing date: 2013-01-14
Publication date: 2013-08-07
Anticipated expiration: 2023-01-14

Abstract

The utility model relates to a minimally invasive lengthened arm pedicle screw and belongs to the field of medial instruments. The minimally invasive lengthened arm pedicle screw is composed of a minimally invasive screw body (1), a minimally invasive lengthened arm connector (2), an opening press block (3) and a connecting screw plug (4). The minimally invasive lengthened arm pedicle screw is characterized in that the minimally invasive screw body (1) is composed of a thread part and a ball head part, the minimally invasive screw body (1) is a central through hole, a symmetrical flat face is arranged on the outer surface of the ball head part of the minimally invasive screw body (1), the minimally invasive lengthened arm connector (2) is of a hollow structure, threads are arranged on the head portion of the left end of the minimally invasive lengthened arm connector (2), ball faces are arranged inside and outside the head portion of the left end of the minimally invasive lengthened arm connector (2), a ring-shaped groove is formed in the surface of the minimally invasive lengthened arm connector (2), a symmetric opening groove is formed in the right end of the minimally invasive lengthened arm connector (2), and a U-type groove is formed in the middle of the minimally invasive lengthened arm connector (2). Percutaneous puncture locating, boring and hole expansion are carried out, the minimally invasive lengthened arm pedicle screw is implanted, inserted into a spinal column stick and pre-bent to a surgery requirement, the screw plug is screwed tightly, open reposition is carried out, the screw plug is screwed tightly to be in a final locking state, and a stable fixing function is achieved.

Description

Wicresoft's extension arm pedicle nail

Technical field

This utility model relates to a kind of Wicresoft extension arm pedicle nail, belongs to medical instruments field.

Background technology

The Wicresoftization of operation, functionalization and intellectuality are the signs of modern surgery technology, it also is the developing direction of following surgical technic, the vertebral column minimally invasive surgical technic is that the conventional spinal operation is combined with less invasive techniques, reduce operation to patient's wound in the hope of reaching, alleviate the grieved uncomfortable of patient's postoperative, shorten bed and hospital stays, accelerate the rehabilitation of patient's postoperative function, and effort keeps the integrity of spinal column normal anatomical structures, thereby reach the highest goal of postoperative preservation spinal normal physiological function, yet, minimally invasive spine surgical not only needs the auxiliary of advanced instrument and equipment and supports, but also require the patient to have very high tactile sensing degree, spatial discrimination, and can be by the ability of the skilled operation of narrow service pipe, the neighbour important nerve in spinal column the place ahead particularly, blood vessel and internal organs, this brings great technical difficulty and challenge just for carrying out of spinal column anterior minimally invasive operation.

The Minimally Invasive Surgery of percutaneous cervical arc root screw technique for fixing and percutaneous channel operation technology, peeling off of paraspinal muscle farthest avoided in this class operation, reduce operation wound, and have wide range of applications, huge prolapse of lumbar intervertebral disc be can treat or lumbar spinal stenosis, scoliosis etc. deviate from, percutaneous passage technology surgical field of view is openr than MED, can use the routine operation apparatus, the doctor operates grasp easily, and the percutaneous cervical arc root screw fixed system is that the guiding of having an X-rayed in art is finished drilling and finished, wound is little, the precision height, therefore, this class operation is the Minimally Invasive Surgery mode that compares main flow both at home and abroad, treat prolapse of lumbar intervertebral disc in this way, the lumbar spinal stenosis case, the general reaction of patient's postoperative is that pain is little, postoperative drainage is few, recovers fast.

China's minimally invasive spine surgical technic is started late, and the minimally invasive spine surgical technic is in China's fast development, but the minimally invasive spine surgical technic is carried out imbalance.

Summary of the invention

This utility model provides a kind of operation wound Wicresoft's extension arm pedicle nail little, easy and simple to handle.

The technical solution of the utility model is as follows:

Wicresoft's extension arm pedicle nail, formed by Wicresoft's nail body (1), Wicresoft's extension arm adapter (2), opening briquetting (3), connection plug screw (4), it is characterized in that: Wicresoft's nail body (1) is grouped into by threaded portion and ball head, Wicresoft's nail body (1) is central through hole, and Wicresoft's nail body (1) ball head divides outer surface that symmetrical flat horizontal surface is arranged; Wicresoft's extension arm adapter (2) is hollow structure, and the left end head has screw thread, and sphere is all arranged inside and outside the left end head, and there is annular groove on the surface, and right-hand member has the symmetrical openings groove, and there is U-shaped groove at the middle part.

Wicresoft's nail body (1) bulb partly has symmetrical flat horizontal surface, and be connected with opening briquetting (3), make Wicresoft's extension arm pedicle nail realize radial motion, and left and right sides jiggle effect, the nail body adopts hollow design, the associating guide pin is implanted the nail body, and it is more accurate to make the nail body implant the orientation, satisfies the requirement of percutaneous Minimally Invasive Surgery.

Wicresoft's extension arm adapter (2) brachium 85mm, the nail arm can expose body surface during operation, make the doctor can observe and adjust the planting-peg tendency intuitively, make the planting-peg process accurately simple more, realize the percutaneous Minimally Invasive Surgery, Wicresoft's extension arm adapter (2) can only be swung in the pitman sagittal plane with respect to Wicresoft's nail body (1), pendulum angle is-25 °～+ 25 °, this unique design can be convenient to put rod in the middle of operation process, vertebral body struts and occur when pressurizeing highly losing and vacation struts carrying out to overcome common universal nail again, the phenomenon of pressurization, universal nail is convenient to put rod for it and the single shaft nail is strutting, the sets of advantages of highly not losing during pressurization together, the arm afterbody adopts closure designs, avoids following closely the arm distending, make accuracy of thread higher, cooperate tightr, the lock rod more fastening, the operation technique of being more convenient for.

Opening briquetting (3) central through hole, its middle part, hole has spherical, and there is arc-shaped groove the upper surface.

Implement fixing operation by X line perspective or navigation system, determine surgery location, determine the quantity of Wicresoft's extension arm pedicle nail and spinal rod, under the guiding of X line perspective or navigation system, implement operation: the percutaneous puncture location, utilize mis instruments boring, reaming, implant Wicresoft's extension arm pedicle nail, penetrate spinal rod and pre-bending to requirements of operation, tighten and connect plug screw (4), implement distraction reduction according to clinical demand, tighten and connect plug screw (4) to final locking state, the function of realization held stationary.

This utility model is in operation process, and operative incision is little, and protection muscle and ligament normally adhere to epispinal, do not need to expose spinal column, safety, implants accurately.

This utility model has feasibility in morphology, and each parameters of operating part has certain scope of choosing, and can rebuild the stability of vertebral body, and firm, easy and simple to handle, the novel internal fixation system that meets the anatomy of spine structure of safety is suitable for the orthopaedics clinical application.

Description of drawings

Fig. 1 is the extension arm pedicle nail pin structure figure of Wicresoft of the present utility model.

Fig. 2 is Wicresoft of the present utility model nail body (1) structure chart.

Fig. 3 is opening briquetting of the present utility model (2) structure chart.

Fig. 4 is the front view of extension arm adapter of the present utility model (3).

Fig. 5 is the vertical view of extension arm adapter of the present utility model (3).

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

1. prepare before the art: need finish under the help of X line perspective or navigation system during operation, anesthesia, vertebral body reset;

2. determine the screw surgery location: percutaneous inserts guide pin and fixing;

3. passage is prepared: extract guide pin, the little otch of row operation;

4. boring, reaming, tapping;

5. be screwed into screw;

6. implant barred body, pre-bending and temporary fixed, confirm that by perspective or little microretractor rod is positioned at the long-tail groove of extension arm adapter (3) after, tighten connection plug screw (4);

7. vertebral body distraction reduction, and then under the softened state, tighten the connection plug screw (4) of an other end, finally lock barred body;

8. fracture screw is long-armed with disconnected arm device, understand the operative reduction situation by perspective.

Claims

1. Wicresoft's extension arm pedicle nail, formed by Wicresoft's nail body (1), Wicresoft's extension arm adapter (2), opening briquetting (3), connection plug screw (4), it is characterized in that: Wicresoft's nail body (1) is grouped into by threaded portion and ball head, Wicresoft's nail body (1) is central through hole, and Wicresoft's nail body (1) ball head divides outer surface that symmetrical flat horizontal surface is arranged; Wicresoft's extension arm adapter (2) is hollow structure, and the left end head has screw thread, and sphere is all arranged inside and outside the left end head, and there is annular groove on the surface, and right-hand member has the symmetrical openings groove, and there is U-shaped groove at the middle part.

2. Wicresoft according to claim 1 extension arm pedicle nail, it is characterized in that, described Wicresoft nail body (1) bulb partly has symmetrical flat horizontal surface, and be connected with opening briquetting (3), make Wicresoft's extension arm pedicle nail realize radial motion, and left and right sides jiggle effect, the nail body adopts hollow design, the associating guide pin is implanted the nail body, and it is more accurate to make the nail body implant the orientation, satisfies the requirement of percutaneous Minimally Invasive Surgery.

3. Wicresoft according to claim 1 extension arm pedicle nail, it is characterized in that, described Wicresoft's extension arm adapter (2) brachium 85mm, the nail arm can expose body surface during operation, Wicresoft's extension arm adapter (2) can only be swung in the pitman sagittal plane with respect to Wicresoft's nail body (1), and pendulum angle is-25 °～+ 25 °.

4. Wicresoft according to claim 1 extension arm pedicle nail is characterized in that, described opening briquetting (3) central through hole, and its middle part, hole has spherical, and there is arc-shaped groove the upper surface.