CN1268036A

CN1268036A - Intramedullary osteosynthesis nail system capable of being used in all human and animal bones to heal fractures or for lengthening bones

Info

Publication number: CN1268036A
Application number: CN 97182324
Authority: CN
Inventors: 乌韦·阿伦斯
Original assignee: AAP CULTURE AG
Current assignee: AAP CULTURE AG; Aap Implantate AG
Priority date: 1997-07-30
Filing date: 1997-07-30
Publication date: 2000-09-27
Anticipated expiration: 2017-07-30
Also published as: CN1155345C

Abstract

The present invention relates to an intramedullary osteosynthesis nail system, for healing fractures or for lengthening bones of all human and animal bones, especially applied to the thigh area. The system components include a intramedullary osteosynthesis nail as a basic component, which can be connect to at least another implanted pieces (5) by selecting from connecting devices (3,4,6,10) at its upper and/or lower end. Thus this nail can also be connected to new components being at an implanted state, so even after the first surgery, it can extend the functions in the condition that will not spend the the needed cost when the implants are completely replaced.

Description

The interior synthetism plug pin system of medullary cavity that is used for the fractures or the bone lengthening of the somebody of institute bone and animal bone

The present invention relates to a kind of system, be used for the fractures or the bone lengthening of the somebody of institute bone and animal bone, especially be applied in the thigh district based on synthetism plug pin in the medullary cavity.

Various damaged known various processing scheme arranged for what occur.For example adopt synthetism plug pin in the medullary cavity for Fracture of femur.When fracture of femoral neck, then adopt the neck of femur nail.They are packed into by hole set in medullaty nailing and insert in the neck of femur.For knee and the special-purpose prosthese of the known use of hip.When all changing prosthese in the bodies, often may relate to the correction of prosthese.

Basically can treat the damaged of the miscellaneous fracture of generation and bridge joint bone by means of above-mentioned implant.

Confirmed already that the shortcoming that exists was here, for the patient of multiple fracture must use may be dissimilar implant, and these implants are inharmonious each other.May cause when patient's clinical sign changes, must changing whole implants under the situation of worst.

Certified another shortcoming is that the surgeon number of spare parts that will store is big.

The objective of the invention is to prepare a kind of implant of supporting fractures or being used for the bridge joint defective bone of being used to, this implant can address the above problem.

The objective of the invention is to reach by claim 1 and the described feature of claim 6.Claims have illustrated favourable the further developing of the present invention.

Basic thought of the present invention is, suggestion use a kind of based on one as synthetism plug pin system in the medullary cavity of basic building block.This synthetism plug pin can be selectively by its upper end and/or the connecting device of lower end, with the assembly of being selected for use at patient's state of an illness separately by surgeon; Simultaneously, where necessary, with change of illness state after the assembly that adapts carry out suitable being connected, and need under latter instance, not change whole implants.

Therefore, synthetism plug pin in the medullary cavity can expand to this basic implant in knee or the hip district when needed.Confirmed already that the outstanding advantage here was, and allowed plug pin to be connected with the New Parent that is in implanting state, so even also can be under the situation of not changing expense required expense when changing implant fully after performing the operation the first time expanded function.

Advantageously, this system design is knockdown system, can expand or reduce other ingredients at any time under the situation of needs.Consequently shorten operating time and help the patient, specifically select in carrying out because this system can be also included within operation according to patient's the state of an illness, and when change of illness state, adapt with it.

The adaptability of implant for example may be necessary under following situation, that is, when existing tumor must take out the some parts of bone, and the size of these parts is only when intra-operative could be determined.Operative doctor then can concrete decision according to this result, should load onto those assemblies on the synthetism plug pin in medullary cavity.

The present invention be advantageous in that, as general utility tool by means of being undertaken by system of the present invention that fractures becomes not only simply but also safe and reliable.

The synthetism plug pin preferably uses a kind of like this nail in the relevant medullary cavity, and it has equidistant breaker slot and little target hole and at far-end and near-end two big via holes are arranged along whole nail length.Via hole can make in the medullary cavity synthetism plug pin accurate location and can nail temporary transient fixing in the ray tracing of X-ray equipment, finally is fixed in the bone so that will follow closely with steady pin, in these steady pin insertion grooves.It is not too convenient only to locate by means of groove, because different with the hole of circle, groove still shows as all the time in ray tracing and whether is in the irrelevant groove of quadrature position.Here, term " quadrature " refers to the hole with respect to the ray tracing vertical orientation and thereby show as wholecircle.Being positioned at outside groove makes that medullary cavity synthetism plug pin flexural rigidity is relatively poor and thereby allows to import power into bone better.

By matching as anatomical shape of synthetism plug pin and bone in the medullary cavity of basic building block in the system of the present invention and can be according to selecting to implant near-end or far-end.

The present invention regulation, connecting device is established at the two ends of synthetism plug pin in medullary cavity, so that cover the indication scope of maximum possible, that is to say, will expand to as synthetism plug pin in the medullary cavity of basic building block both to allow to be used for the knee and also allow to be used for the hip district.

These connecting devices are preferably designed as interior or cylindrical cone or be designed to screw thread.

But can not be connected with synthetism plug pin in the medullary cavity as common braking nail fully with assembly yet.

By removing synthetism plug pin in this medullary cavity on the connecting device that a shaft-like equipment is spun on or is contained in nail, at that time, after removing clamping screw, nail can be extracted in bone.Should be noted in the discussion above that when shaft-like dismounting equipment is installed has a carriage, to guarantee not having moment of torsion to import in the bone.

Another aspect of the present invention provides a supporting member, and it especially can be used as the ingredient by system of the present invention.

This supporting member has been unified a plurality of essential parts usually: it is used for installing and fixing for example neck of femur nail, by neck of femur the neck of femur nail is pushed in the femoral head then.

Supporting member is as the implant assembly by the special use of synthetism plug pin in the medullary cavity of the described system of claim 1, by the present invention one or more hole and always a plurality of outlet openings of entering are arranged, outlet opening is preferably in opposite side and enters the hole with respect to each and arrange by the angle of an inclination, therefore nail can one when inserting selectable angle state pass supporting member.Supporting member can preferably be connected with synthetism plug pin in the medullary cavity by the cone connecting device by connecting device in its lower end.The passage of neck of femur nail preferably has a kind of shape that matches with nail, and it preferably is not circular, in case the rotation of neck of femur nail.

In supporting member, preferably establish three outlet openings.Their centrage can intersect on one point.Enter the hole and adjust in such a way with respect to the angle situation of outlet opening, that is, the center of rotation that makes the nail that will insert is with to enter the hole consistent, but it also can be positioned at other position.

Except that supporting member, also establish different prosthesis structures as other ingredients by system of the present invention.One of them example is the prosthese stake of establishing the hip side.It is used for for example being connected with synthetism plug pin in the medullary cavity as revising prosthese.

Can adorn a knee joint side prosthesis member in the lower end of nail similarly.It is used for for example being connected with synthetism plug pin in the medullary cavity as revising prosthese equally.For bigger damaged of bridge joint, also can use together by two prosthesis structures.

At last, for example under the damaged situation of bone, the synthetism plug pin can replenish with a similar extension element in this medullary cavity.

Below by means of further specifying the present invention for example.

Wherein:

Fig. 1 is as synthetism plug pin in the medullary cavity of pressing basic building block in the system of the present invention;

The schematic partial sectional view of Fig. 2 Fig. 1 has a female cone body as connecting device, and it can be contained on the extension element;

Fig. 3 has the supporting member at the head of hip side and neck of femur succedaneum;

The supporting member of the neck of femur nail possible position that Fig. 4 represents to insert; And

Fig. 5 neck of femur nail cross section.

Fig. 1 represents synthetism plug pin 1 in a kind of known medullary cavity, and it is as tibia nail.It correspondingly designs greatlyyer in the time of in being used in the femur district.Synthetism plug pin 1 has and is positioned at outside groove 2 and little and big hole in the medullary cavity, and some of them are used to make that the synthetism plug pin is easy to locate in the medullary cavity in ray tracing as via hole.The synthetism plug pin is followed closely end thereon and down in the basic building block medullary cavity connecting device 3,4 and 10.Can power transmission and/or load onto some assemblies rigidly by these connecting devices.Represented here connecting device is designed to cone or screw thread.

Fig. 2 has represented an inner cone 6 as connecting device, and this female cone body that is on the extension element 9 can be installed on the Outer Taper of Fig. 1.

Fig. 3 represents supporting member 5, and it can be connected with synthetism plug pin 1 in the medullary cavity by means of inner cone 6.This supporting member 5 is provided with hip side prosthesis stake 7.

Elongated hole 8 clamping screw of can packing into, therefore the moment of introducing in the member can further be passed to bone.This can prevent possible tearing.

Fig. 4 represents supporting member 5 and penetrates the various probabilities of neck of femur nail.These nails are used for the treatment of fracture, and they for example use two rotors (through greater trochanter of femur pertrochant  r) tension.The nail of supporting member of packing into stretches in the femoral head by neck of femur and forms a cantilever, and it bears at this regional bending force and revolving force.Supporting member 5 has one to enter hole and a plurality of outlet opening.Therefore the neck of femur nail can be fixed therein on the selectable angle position.

The groove of supporting member has the section shape identical with relevant nail.

Fig. 5 represents a kind of known modified section shape of neck of femur nail.

Claims

1. synthetism plug pin system in the medullary cavity, the fractures or the bone lengthening that are used for the somebody of institute bone and animal bone, especially be applied in the thigh district, the ingredient of this system comprises that synthetism plug pin (1) is as basic building block in the medullary cavity, it can be by the connecting device (3 at its near-end and/or far-end, 4,6,10) be connected with a supporting member (5), wherein, this supporting member (5) according to select can-in order to insert especially neck of femur nail of one or more nails, one or more hole and one or more outlet openings of entering are arranged, the latter is in such position with respect to entering the hole, that is, when inserting when nail different angle of formation between the synthetism plug pin axis in nail longitudinal axis and medullary cavity;-be provided with the prosthese stake (7) of hip side;-be provided with the prosthese stake of knee joint side;-be provided with the nail extension element.

2. according to synthetism plug pin system in the described medullary cavity of claim 1, it is characterized by: the connecting device of synthetism plug pin is designed to cone (3,4,6) in the medullary cavity.

3. according to synthetism plug pin system in the described medullary cavity of claim 2, it is characterized by: what these connecting devices related to is a kind of female cone body or cylindrical cone (3,4,6).

4. according to synthetism plug pin system in the described medullary cavity of claim 1, it is characterized by: the connecting device of synthetism plug pin is screw thread (10,11) in the medullary cavity.

5. according to synthetism plug pin system in the described medullary cavity of claim 4, it is characterized by: connecting device relates to female thread (10,11) or external screw thread.

6. Ding supporting member, its regulation is characterized by as the ingredient according to synthetism plug pin system in the described medullary cavity of claim 1: with the lower end connecting device (6,11) is arranged in the top, be used for medullary cavity in the synthetism plug pin be connected with other assemblies.

7. according to the described supporting member of claim 6, it is characterized by: each passage that is used for a nail all has a kind of section shape that matches with nail that will pass.

8. according to the described supporting member of claim 7, it is characterized by: what this nail was related is a kind of neck of femur nail.

9. according to the described supporting member of claim 6, it is characterized by: establish three or more outlet openings.

10. according to the described supporting member of claim 6, it is characterized by: system one hole (8) on supporting member, a clamping screw of moment being passed to bone is used to pack into.

11. according to the described supporting member of claim 10, it is characterized by: this hole is an elongated hole.