CN202637081U

CN202637081U - Telescopic metal spicule

Info

Publication number: CN202637081U
Application number: CN 201220281281
Authority: CN
Inventors: 任秀智
Original assignee: TIANJIN XINZHONG MEDICAL DEVICES CO Ltd
Current assignee: TIANJIN XINZHONG MEDICAL DEVICES CO Ltd
Priority date: 2012-06-09
Filing date: 2012-06-09
Publication date: 2013-01-02
Anticipated expiration: 2022-06-09

Abstract

The utility model discloses a telescopic metal spicule, and the telescopic metal spicule belongs to the medical apparatus of the orthopedics department. The telescopic metal spicule comprises a main needle and a sub-needle. The main needle is of a hollow needle structure, and the sub-needle is inserted in a hollow hole of the main needle. Screw threads are arranged on the front end of the sub-needle, the tip of the sub-needle is provided with more than one openings, and the screw threads are fixed on the far end of the skeleton in a rotating mode. Screw threads are arranged on the tail end of the main needle, and are fixed on the near end of the skeleton. By inserting the metal spicule and preserving the spicule for a long term in the long marrow cavity of a patient to fix the skeleton internally, the telescopic structure can become longer with the healing and growing of the bone of the child patient. The telescopic metal spicule has the advantages of being scientific in structure, easy to process, convenient to use, prominent in effect, and achieving the practical purpose of being firm, reliable, simple, practical, fast, minimally invasive, comprehensive in functions and easy to manipulate. The telescopic metal spicule particularly has the most specific treatment effect for osteogenesis imperfecta of children and fills the vacancy of the professional equipment of the treatment of the osteogenesis imperfecta of children in our country.

Description

Telescopic metal bone needle

Technical field

This utility model relates to medical instruments field, particularly fixing telescopic metal bone needle in the marrow corrected of a kind of long bone deformity that causes mainly for child's osteogenesis imperfecta.

Background technology

Because the sickness rate of child's osteogenesis imperfecta is very low, so that the present few people's concern of the treatment of this rare disease, and few especially for the orthopedic instrument of this special patient's mass treatment use.The malformation correction orthopedics internal fixing appliance commonly used of existing treatment child osteogenesis imperfecta, the traditional conventional RUSH nail of basic or use or Common intramedullary nail, the RUSH nail is the internal fixation device of a kind of applicable treatment adult's fracture of the lower limb, and not exclusively is suitable for the treatment of the malformation correction of child's osteogenesis imperfecta.The conventional RUSH nail of tradition not only easily needle body come off, especially the afterbody of RUSH nail buckle is detained outside bone, causes extremely easily soft tissue to gall and exposes, so that the risk of postoperative infection strengthens.Maximum defective is when child patient's bone growth, all RUSH nail and interior fixedly intramedullary pins all can't increase with skeleton growth, when patient's skeleton length arrives certain-length, can only do again the interior fixedly intramedullary pin of 2 times even 3 times operation replacing lengthenings, very likely cause secondary fracture and limb shortening such as untimely replacing, not only cause the misery of child patient, more increased the weight of the multiple risks of infant family financial resource and material resource manpower.

The utility model content

This utility model adopts unique telescopic combinative structure, overcome the deficiency of the internal fixation device of existing treatment osteogenesis imperfecta, a kind of telescopic metal bone needle of correcting for the isometric bone malformation of tibia, the femur of child's osteogenesis imperfecta specially is provided, has remedied the defective of traditional internal fixation device.

The technical solution adopted in the utility model is: a kind of telescopic metal bone needle, comprise sub-pin and main pin, and sub-pin is comprised of the screw thread of the fast mouth of sub-needle section, sub-pin main body, sub-needle section; Main pin is comprised of with the main body with hollow-core construction the screw thread of main Aculeata; Use in the main pin of sub-pin insertion hollow-core construction.The head front end of sub-pin is the tip acute angle and has and is no less than 1 fast mouthful; Be convenient to screw in skeleton, the head of sub-pin has one section screw thread, and the diameter of main body is less than the diameter of head.Main pin is hollow-core construction, and afterbody has one section screw thread, and afterbody has interior hexagonal counterbore.Sub-pin will insert in the hollow hole of main pin and use, and very little gap is arranged between the hole of two pins and the pin, and wherein the single face gap is not more than 0.5 millimeter.

Compared with prior art, the beneficial effects of the utility model are:

1, the utlity model has unique telescopic combinative structure, the rectilinearity of needle body and the intensity of needle body, correct the bending of lopsided skeleton and increased the intensity of lopsided skeleton, and telescopic structure can be along with the growth of the skeleton of child patient and is elongated, need 2 times even Repeated Operation after also having avoided the patient to grow up when keeping bone strength, farthest reduced patient's misery and financial burden.

2, sub-needle section has screw thread, can stably be fixed on the far-end of skeleton, and the afterbody of main pin also has screw thread, can stably be fixed on the near-end of skeleton, plays the effect of stabilizing bone intensity.

3, the structure of this utility model uniqueness and cleverly design, the combination installation of sub-pin and main pin is become easily with simple, this has greatly reduced sub-pin and the set-up time of main pin in operation, thereby also greatly shortened the time of operation, farthest reduced the risk of postoperative infection, so that whole operation has is simple, practical reliably operability.

4, this utility model is to design for child's osteogenesis imperfecta long bone malformation correction specially, substantially fixedly all shortcomings of intramedullary pin have been overcome in existing RUSH nail and other, provide a kind of for specially for the internal fixation device of the malformation correction of child's osteogenesis imperfecta, also filled up China treatment child osteogenesis imperfecta orthopedic aspect the blank of specialty apparatus.

Description of drawings:

Fig. 1: the telescopic metal bone needle structural representation of this utility model;

Fig. 2: main needle construction sketch map;

Fig. 3: sub-needle construction sketch map;

Fig. 4: main pin A is to cutaway view;

Fig. 5: sub-pin B is to cutaway view;

Among the figure: 1 sub-pin main body, the screw thread of 1-1 needle section, the fast mouth of 1-2 needle section, 2 main pin main bodys, the interior hexagonal counterbore of 2-1 master's Aculeata, the hollow hole of 2-2 master's pin, the screw thread of 2-3 master's Aculeata.

The specific embodiment:

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, and following examples are used for explanation this utility model, but not as to restriction of the present utility model.

This utility model reaches by following measure: a kind of telescopic metal bone needle, it is comprised of main pin 2 and sub-pin 1, main pin 2 is hollow-core constructions, be used in combination in the hollow hole 2-2 of the main pin 2 of sub-pin 1 insertion, the front end of sub-pin 1 is threaded 1-1, most advanced and sophisticated with being no less than 1 fast mouthful 1-2, so that the rotation of the screw thread position of sub-pin is fixed on the far-end of skeleton; The tail end of main pin 2 is threaded 2-3, so that main pin is fixed on the near-end of skeleton.Take the thigh femur as example: in the operation, first with diastrophic femur skeleton, block in crook, then select the suitable sub-pin of thickness and length, using special aid first sub-pin to be thrust skeleton from the greater trochanter pears shape nest of near end of thighbone inserts to distal femur along the pulp cavity direct motion, and the head threads part 1-1 of sub-pin screwed in the bone dirt end of distal femur and fixing, behind the group pin fixing-stable, the skeleton of deformity also becomes straight line substantially, originally crooked femur straightens, then, be inserted in sub-pin 1 with will stretch main pin 2 hollow holes of pin of special instrument again, and the tailing screw flight 2-3 of main pin is screwed in the greater trochanter of near end of thighbone, this utility model is detained in the pulp cavity of skeleton, keeps the line of force of bone section to be basic straight line, the rectilinearity of needle body of the present utility model and the intensity of needle body, guaranteed the intensity of linearity and the skeleton of skeleton, and telescopic structure can guarantee growth after this utility model is along with the bone healing of child patient and be elongated, avoid 2 times or Repeated Operation.

Claims

1. telescopic metal bone needle, comprise sub-pin and main pin, it is characterized in that, described sub-pin is comprised of the screw thread (1-1) of sub-needle section fast mouthful (1-2), sub-pin main body (1), sub-needle section, described main pin is comprised of the screw thread (2-3) of main Aculeata and main body (2) with hollow-core construction, and described sub-pin (1) inserts in the main pin (2) of hollow-core construction and uses.

2. telescopic metal bone needle according to claim 1, it is characterized in that, the head front end of described sub-pin (1) is the tip acute angle and has and is no less than 1 fast mouthful (1-2), be convenient to screw in skeleton, the head of sub-pin has one section screw thread (1-1), and the diameter of main body (1) is less than the diameter of head (1-1).

3. telescopic metal bone needle according to claim 1 is characterized in that, described main pin (2) is hollow-core construction, and afterbody has one section screw thread (2～3), and afterbody has interior hexagonal counterbore (2-1).

4. the described telescopic metal bone needle of arbitrary claim in 3 according to claim 1, it is characterized in that, described sub-pin (1) will insert middle use of hollow hole (2-2) of main pin (2), and very little gap is arranged between the hole of two pins and the pin, and wherein the single face gap is not more than 0.5 millimeter.