CN2710577Y

CN2710577Y - Artificial pelvis

Info

Publication number: CN2710577Y
Application number: CN 200420016475
Authority: CN
Inventors: 徐万鹏; 温大维
Original assignee: XU WANPEN
Current assignee: XU WANPEN
Priority date: 2004-07-29
Filing date: 2004-07-29
Publication date: 2005-07-20
Anticipated expiration: 2014-07-29

Abstract

Disclosed is an artificial pelvis prosthesis, comprising a ball cup (5), a fixed plate (14) and bolts. Its ball cup (5) and a connecting sleeve (10) are an integration; the fixed plate (14) and a connecting sleeve (3) are an integration; the upper part of the ball cup (5) is connected with the fixed plate (14) through the connecting sleeves (3) and (10), and the lower part is connected with a handle (8) through an artificial ball head (6) and is wedged in a femoral bone (7). The prosthesis component of the utility model can be connected with the femoral head to exert joint function. The prosthesis can be connected with the reserved bone in the body after osteotomy; it not only can support to connect the reserved bone, but also has the function of fixing the bone; it can also realize the conveyance of force, and is near the physiological requirement. The prosthesis has scientific and reasonable design and is provided with telescopic function and high adaptability. When installing, the prosthesis can be fixed by various bolts conveniently without damage to nerve and blood vessel. The prosthesis is provided with safe utilization and convenient installing, and is the ideal displacement device for the medical field of bone coloboma prosthesis rebuilding.

Description

Artificial pelvis prosthesis

Technical field

This utility model relates to the displacement apparatus that the damaged prosthese of a kind of bone is rebuild medical domain, particularly relates to around a kind of human pelvis acetabular bone behind the tumor resection the artificial pelvis prosthesis of defect and restore.

Background technology

Tumor around the acetabular bone as sarcoma, metastatic carcinoma, giant cell tumor of bone etc., often adopts popularity, radical-ability surgical resection, perhaps the criticality operative treatment that dissociates, excise and strike off.When implementing surgical operation, not only want tumor resection, tumor bone, also will excise coupled part normal bone and soft tissue, thus cause the bone of acetabular bone and adjacent regions damaged, and have influence on the function in acetabular bone joint.To this, adopt following means to save the situation both at home and abroad usually:

1, do not rebuild the spacious method of putting of femoral head;

2, tumor bone shell inactivated replantation cement augmentation acetabulum reconstruction method;

3, allograph bone reconstruction method;

4, shape of a saddle prosthese props up staying;

5, manual acetabulum metal cup prosthese method.

From curative effect, above-mentioned technology has the following disadvantages respectively:

1, tumor resection reconstruction method not around the acetabular bone had both made that the tumor bone is cut must to be lacked, but put because of femoral head is spacious, was placed in the scar subcutaneous ulcer that hematoma forms behind the tumor resection, and the location is unstable, and obviously limping will appear in limb shortening, patient.

2, the deactivation of tumor bone shell utilizes method again, and generally hard and destroy less person to sclerotin, effect still can.But big to the tumor osteoclasia, because of the bone shell that utilizes again is few, or because of osteohalsiteresis intensity after the inactivation treatment, had both made and used cement augmentation and carried out acetabulum reconstruction, untoward reaction such as pelvis displacement also appear replanting in its patient easily, cause reconstruction failure.

When 3, adopting the allograph bone reconstruction method, more patient can produce complication such as rejection, allograph bone are absorbed, infect, fracture.

4, after use shape of a saddle prosthese props up staying, because of function singleness, have only supporting role, and do not have hip joint function, will restrict patient's body activity in the future undoubtedly.

5, because of the manual acetabulum metal cup can only replace primary acetabulum, and do not have displacement and cut the tumor bone more greatly and effectively keep the bone effect in the holder junctor, its effect is also satisfied not to the utmost.

This shows that can solve the bone that occurs behind near the tumor resection of acetabular bone effectively damaged, and the function of rebuilding hip joint, is a technical barrier of this sick curative competence of decision.

Summary of the invention

The purpose of this utility model provides and a kind ofly realizes the holder bone that keeps bone, steady bone function with fixing head; Scalability and U-shaped card with adapter sleeve adapt to the size of being cut the tumor bone; The classification of distinguishing left and right sides hipbone with the rotatability of adapter sleeve and ball-shaped cup is with the multi-faceted bolt hole on fixing head and the ball-shaped cup, use that bolt reaches fixing, power transmission, assurance blood circulation and force system in equilibrium and near physiological requirement, the bone deletion problem can be solved and the acetabular bone function can be realized again, improve the acetabular bone artificial pelvis prosthesis of the cure rate of surgical oncology resectional therapy on every side, to overcome disadvantages of background technology.

Realize that foregoing invention purpose technical scheme is: constitute by ball-shaped cup 5, fixing head 14, bolt, its structural feature is, ball-shaped cup 5 is an one with adapter sleeve 10, fixing head 14 is an one with adapter sleeve 3, the top of ball-shaped cup 5 is connected with fixing head 14 by adapter sleeve 3,10, and the bottom is connected with handle 8 by artificial bulb 6 and wedges in the femur 7.

Owing to adopted technique scheme, prosthesis structure of the present utility model can be connected with femoral head, the effect of performance joint.Prosthese can with body after the osteotomy in keep bone and be connected, can not only hold in the palm to connect the reservation bone, the function of bone fixation is arranged, transmission that can also realizable force, and again near physiological requirement.Prosthetic designs is scientific and reasonable, has scalable function, and adaptive capacity is strong.During installation, various bolting be can use easily, nerve and blood vessel do not damaged, safe in utilization, easy for installation.All parts of the present utility model in addition all integrate with working standard, have not only used existing artificial thigh bone, block polymer and femoral stem, and all supporting with it at aspects such as material, specifications.

Description of drawings

Fig. 1 is this utility model integral assembling structure sketch map.

Fig. 2 is U-shaped card structure figure.

Fig. 3 is central bolt hole site figure.

Fig. 4 is the human pelvis structural representation.

The specific embodiment

Below in conjunction with drawings and Examples this utility model is further described.

This utility model is human body acetabular bone and the damaged and acetabulum reconstruction device of bone that causes behind the tumor resection on every side thereof.This device is cut the displacement members adapter sleeve 3,10 of tumor bone, artificial reconstructed member ball-shaped cup 5 compositions such as grade of acetabular bone by the synthetism member fixing head 14 that keeps bone in the body after the osteotomy.Its integral assembling structure is referring to accompanying drawing 1, and the section of fixing head 14 is unequal angle shapes, and right angle on the both wings on its length limit and acute angle all are slick and sly camber line shape, and narrow lateral wall is wide at the end.Its minor face is the holder surface of bone that keeps bone in the body, with complete contact of wound surface that keeps bone, as Fig. 1, Fig. 3, be provided with a central bolt hole 1 in its centre position, the both sides is provided with two oval bolts hole, and one is power transmission bolt hole 2, and another is balancing bolt hole 12.During use, power transmission bolt, balancing bolt are passed from bolt hole, imbed with different directions in keeping bone, bearing the active cross force of human body, and guarantee force system in equilibrium.The long limit of fixing head 14 (face, lateral wall) is steady surface of bone, can contact with keeping the bone unconformity, is provided with four bolts hole 13 that play Stabilization above.Fixing head 14 connects as one with adapter sleeve 3, and its link position becomes 90 degree angles in the outer wall central authorities of holder surface of bone with the holder surface of bone, and central bolt is therefrom passed.The top of ball-shaped cup 5 is connected with fixing head 14 by adapter sleeve 3,10, adapter sleeve 10 and adapter sleeve 3 are two waney thick-walled tube shapes, inside and outside socket is provided with and forms inside and outside adapter sleeve 10,3, has the telescopic function, wherein interior adapter sleeve 10 is above the shell camber line of ball-shaped cup 5, and its outer wall is provided with many equally spaced grooves 4.The tube wall of outer adapter sleeve 3 is provided with the spacing hole clipping 11 of U-shaped.After the lap of splice of two adapter sleeves 3,10 is determined, pass through groove 4 and spacing hole clipping 11 positioning lockings of U-shaped with U-shaped card shown in Figure 2 15.As Fig. 1, interior coupling sleeve 10 and ball-shaped cup 5, outer adapter sleeve 3 all is the metal castings that fuse with fixing head 14.Dock with artificial bulb 6 bottom of ball-shaped cup 5, and pass through artificial bulb 6 and be connected with handle 8 and wedge in the femur 7.

Use of the present utility model connects embodiment:

Referring to accompanying drawing 4, pelvis comprises symmetric ilium 22, pubis 20 and ischium 19, and its rear is a rumpbone 16, and symmetric two halves pelvis connects at the tuberosity of pubis 20, and both sides acetabular bone 21 places with about two femorals head 17 be connected, femoral head 17 is connected with femur 18.

Reservation bone photo after fixing head 14 and the osteotomy connects, and its leptoprosopy is the holder surface of bone, and wide and ilium 22 parallel longitudinals are steady surface of bone, can bear the body weight load.The horizontal applied force of the direction of power transmission bolt during with physical activity is identical, and the direction of balancing bolt is opposite with it, realizes force system in equilibrium.Adapter sleeve 3,10 back that is nested has a telescopicing performance on length, two pipe overlap joints that can different length adapt to the size of the tumor bones that cut.After the two pipe laps of splice are determined, select corresponding groove 4, through hole clipping 11 location, both adapted to and cut the tumor bone with U-shaped card 15, realized the power transmission of 14 pairs of ball-shaped cups 5 of fixing head again, the pressure that its safety coefficient produces in the time of can satisfying physical activity, the requirement of various intensity such as drawn, turned round.

Ball-shaped cup 5 and artificial bulb 6 adapt to the corresponding angle of femoral head 17 and acetabular bone 21 with the universal function of sphere when dock assembling, and pass through artificial joint handle 8 and be connected the transmission of realizable force with femur 18.Bolt hole 9 on the ball-shaped cup 5 can be fixed on the corresponding skeleton by bolt, helps the reinforcing reparation of bone cement again.

Application Example

This utility model has been that the tumor resection patient around the five routine acetabular bones has implemented defect and restore.3 male 3 woman are arranged, elder of age 65 years old, reckling 16 years old among the five routine patients.Adopt not reconstruction method to cause the acetabular bone displacement, and the lame passerby of limb shortening occurs; After having pair tumor to carry out wide excision, all polymorphic types such as ischium, acetabular bone and the cut person of bottom ilium.After adopting damaged reconstruction of bone of this utility model to the patient, having carried out with bone grafting around it is the reparation of part cement augmentation of advocating peace.Postoperative 2 months all can normally be sat, stands, OK, and cure rate is remarkable, has reached goal of the invention.

Claims

1, a kind of artificial pelvis prosthesis, constitute by ball-shaped cup (5), fixing head (14), bolt, it is characterized in that, ball-shaped cup (5) is an one with adapter sleeve (10), fixing head (14) is an one with adapter sleeve (3), the top of ball-shaped cup (5) is connected with fixing head (14) by adapter sleeve (3), (10), and the bottom is connected with handle (8) by artificial bulb (6) and wedges in the femur (7).

2, artificial pelvis prosthesis according to claim 1, it is characterized in that, described fixing head (14) is a unequal angle shape, narrow lateral wall is wide at the end, the centre position of its bottom is provided with central bolt hole (1), the both sides in central bolt hole (1) is provided with power transmission bolt hole (2) and balance bolt hole (12), and lateral wall is provided with stable bolt hole (13).

3, artificial pelvis prosthesis according to claim 1, it is characterized in that, described adapter sleeve (10) and adapter sleeve (3) are two waney thick-walled tube shapes, inside and outside be provided with and form inside and outside adapter sleeve (10), (3), wherein on the outer wall of interior adapter sleeve (10), be provided with many equally spaced grooves (4), the tube wall of outer adapter sleeve (3) is provided with the spacing hole clipping of U-shaped (11), and U-shaped card (15) is by groove (4) and the spacing hole clipping of U-shaped (11) positioning locking.

4, artificial pelvis prosthesis according to claim 1 is characterized in that, the housing of ball-shaped cup (5) is provided with several fixed bolt holes (9).

5, artificial pelvis prosthesis according to claim 1, it is characterized in that, interior coupling sleeve (10) and ball-shaped cup (5), outer adapter sleeve (3) all is the metal castings that fuse with fixing head (14), the link position of its China and foreign countries' adapter sleeves (3) and fixing head (14) is in the outer wall central authorities of holder hone lamella face, become 90 degree angles with the holder surface of bone, interior adapter sleeve (10) is positioned at the shell camber line top of ball-shaped cup (5).