CN202920321U

CN202920321U - Intramedullary positioner

Info

Publication number: CN202920321U
Application number: CN 201220645544
Authority: CN
Inventors: 解凤宝; 郑宇秋; 吕昌禹; 徐瑄
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2012-11-29
Filing date: 2012-11-29
Publication date: 2013-05-08
Anticipated expiration: 2022-11-29

Abstract

The utility model provides an intramedullary positioner. The intramedullary positioner comprises a broach (1), an angle positioning plate (2), a second rotating angle handle (3), a first rotating angle handle (6) and a broach rod (7), wherein the broach rod (7) is fixed on the first rotating angle handle (6) by a cylindrical pin after sequentially penetrating through a through hole of the angle positioning plate (2), a through hole of the second rotating angle handle (3) and a through hole of the first rotating angle handle (6); the angle positioning plate (2) can be fixed on the broach rod (7) at an adjustable angle; the second rotating angle handle (3) can be rotatably fixed on the broach rod (7); and the broach (1) is connected with the broach rod (7) through a threaded structure. By the adoption of the intramedullary positioner with the structure, the assembling step is saved, the operation time is shortened, the operation steps are simplified, the operation success rate is improved, and the pains of the patients are reduced.

Description

Localizer in marrow

Technical field

This utility model relates to the medical apparatus and instruments in a kind of replacement knee in arthroplasty, relates in particular to a kind of marrow interior locating device.

Background technology

In prior art, the distal femur osteotomy device is comprised of localizer, protractor, osteotomy of distal guider, four parts of osteotomy of distal localizer in marrow, four parts are independent, need to carry out suitable assembling according to the osteotomy situation of distal femur, therefore, not only need doctor or assistance personnel to know the osteotomy situation during assembling, also require the relation that cooperatively interacts between its structure of grasping each parts and each parts; In addition, need interim assembling due to before using, therefore structurally be difficult to guarantee closely coupling, so there is unavoidably error to occur when using it to measure; Have, described protractor is selected more single, can not carry out different adjustment according to different patients again, thereby can not reach the required precision of operation; Have, described protractor has dividing of left and right again, during installation, thereby need to especially note avoiding anti-dress to cause osteotomy reverse to the left and right protractor.

Therefore, above-mentioned distal femur osteotomy device is demanded urgently improving to reach the precision of performing the operation more accurately, simplifies simultaneously operating procedure, improves success rate of operation.

Summary of the invention

The purpose of this utility model is to provide a kind of gather location, angle adjustment and osteotomy guide function localizer in the novel marrow of one in marrow.

To achieve these goals, in marrow described in the utility model, localizer includes broach, angle orientation plate, the second swing angle handle and the first swing angle handle and broach bar, described broach bar passes successively the through hole of angle orientation plate and the through hole of the second swing angle handle and the through hole of the first swing angle handle and is fixed on the first swing angle handle with straight pin, being fixed on the broach bar of described angle orientation plate adjustable angle, described the second swing angle handle is rotatable to be fixed on the broach bar, and broach is connected by helicitic texture with the broach bar.

Further, an end face of described angle orientation plate has two steel ball holding tanks, and the other end of described angle orientation plate is provided with two shop bolts.

Further, described the second swing angle handle is the cylinder that end face and bottom surface have certain angle, the circumference gusset place of described cylindrical bottom end has scale mark, and described scale mark has the zero graduation line, symmetrical graduation mark, the left and right labelling that increases left and to the right respectively take the zero graduation line as datum line; The two ends symmetry of one diameter line of the bottom surface of described the second swing angle handle be provided with the first ball storage tank.

Further, also be provided with lock-screw on described the second swing angle handle, described lock-screw is by locked the second swing angle handle of latch segment.

Further, described the first swing angle handle has tail end and butt end, described butt end dock with the bottom of the second swing angle handle and its end face circumference on have center line; The two ends symmetry of one diameter line of described docking end face be provided with the second ball storage tank; Take described center line as benchmark, be arranged symmetrically with 11 angle grooves that are used for admitting ball on the end face of described butt end, described each angle groove all represents an angle as calculated.

Further, described the first swing angle handle has axial through bore, accommodates the broach bar in described axial through bore, and an end of described broach bar extends the tail end of the first swing angle handle,, together with being fixed in, the first swing angle handle is threaded connection with plug by straight pin.

Further, in described marrow, localizer also includes the osteotomy plate, and described osteotomy plate is arranged on the angle orientation plate, according to the angle that the angle orientation plate is located, knee joint is carried out osteotomy.

Adopt the interior localizer of marrow of technique scheme, saved the step of assembling, shortened operating time, simplified operating procedure, improved success rate of operation, reduced patient painful; In addition, increase the angle modulation scope of valgus angle, upgraded to and to carry out angular adjustment according to patient's different demands by the former angle modulation number of degrees that fix, thereby improved the precision of operation; Have, the new device that integrates four functions has avoided four counterparts of original femur osteotomy of distal device in conjunction with the unstable not high phenomenon of osteotomy accuracy that causes again.

Description of drawings

Fig. 1 is the perspective view of localizer in marrow described in the utility model;

Fig. 2 is the generalized section of localizer in marrow shown in Figure 1;

Fig. 3 is the end view of the first swing angle handle of localizer in marrow shown in Figure 1;

Fig. 4 is the end view of the abutting end of the first swing angle handle in the second swing angle handle of localizer in marrow shown in Figure 1 and Fig. 3.

The specific embodiment

In order better to understand the purpose of this utility model, construction features and function are described in detail below in conjunction with structure, work process and the function of accompanying drawing to preferred implementation of the present utility model.

As shown in Figure 1, in marrow described in the utility model, localizer includes broach 1, angle orientation plate 2, the second swing angle handle 3 and the first swing angle handle 6.Described angle orientation plate 2 is platy structure, is used for the angle of guiding osteotomy, and the center of described angle orientation plate 2 has through hole, and an end face of described angle orientation plate 2 has at least two steel ball holding tanks 22; Described the second swing angle handle 3 has the cylinder of certain angle for end face and bottom surface, this cylinder center has the through hole corresponding with through hole 31, the circumference gusset place of the bottom end 32 of this cylinder has scale mark, described scale mark has zero graduation line 34, symmetrical graduation mark (zero degree to nine degree), left and right (L, the R) labelling that increases left and to the right respectively take the zero graduation line as datum line, the two ends symmetry of one diameter line of the bottom surface of described the second swing angle handle have two ball storage tanks 33, be used for holding ball (as shown in Figure 3); Described the first swing angle handle 6 has butt end 61 and tail end, have the center line corresponding with zero graduation line 34 64 on the end face circumference of described butt end 61, when zero graduation line 34 alignd with center line 64, the angle of expression angle orientation plate this moment locking was zero degree, adjusts angle for benchmark simultaneously; The docking end face of described the first swing angle handle is divided into both sides by a diameter line with this end face, the two ends symmetry of described diameter line be provided with ball storage tank 64, its ball storage tank 33 with described the second swing angle handle is corresponding; Described middle separated time 62 places; Take middle separated time 62 as benchmark, be arranged symmetrically with 11 angle grooves 65 on the end face of described butt end 61, described angle groove is used for admitting ball, described each angle groove all represents an angle as calculated, in the present embodiment, take middle separated time as benchmark, both sides are furnished with respectively four angle grooves.

Further, as shown in Figure 1, described the first swing angle handle 6 has axial through bore, accommodate broach bar 7 in described axial through bore, one end of described broach bar 7 extends the tail end of the first swing angle handle 6,, and is threaded connection with plug 8 together with the first swing angle handle is fixed in by straight pin.

Further, described broach bar 7 passes the through hole 21 of angle orientation plate 2 and the through hole of the second swing angle handle 3, and fixes by screw thread with broach 1.

Further, also be provided with lock-screw 9 on described the second swing angle handle 3, described lock-screw is by latch segment 10, can locked the second swing angle handle 3, to avoid the second swing angle handle 3 in the process rotation of operation, thereby changing appears in the angle that causes angle orientation piece 2, and then it is inaccurate to cause performing the operation.

Further, the other end of described angle orientation piece 2, that is, the end face that contacts with femur is provided with shop bolt 13, and it is used at knee surgery fixedly localizer and femur in marrow.

Further, in marrow described in the utility model, localizer also includes osteotomy plate 5, and described osteotomy plate 5 carries out osteotomy for the angle of locating according to angle orientation plate 2 to the knee joint distal femur, and described osteotomy plate is arranged on angle orientation plate 2.

Below in conjunction with the structrual description of this utility model above-described embodiment, introduce in detail its work process: at first, the center line 64 of the first swing angle handle is alignd with the zero graduation line 34 of the second swing angle handle, make the interior localizer of whole marrow be in state to be adjusted; Then, in replacement knee in arthroplasty, the angle adjustment that a upper program records makes the center line 64 of the first swing angle handle align with the scale of required angle, and at this moment, described ball is contained in angle groove corresponding with required angle in the first swing angle handle; In adjusting the angle process, should be noted that the left and right labelling, to avoid the angle adjustment mistake, adjust complete after, the locked swing angle hands of rotary screw 9 handle; Then, utilize shop bolt that femur and broach localizer are fixed; At last, choose suitable osteotomy device and carry out osteotomy.

The above is only its a kind of preferred implementation of four sides described in the utility model osteotomy; should be pointed out that for those skilled in the relevant art, under the prerequisite that does not break away from this utility model principle; trickle modification and the improvement made also should be considered as belonging to protection domain of the present utility model.

Claims

1. localizer in a marrow, include broach (1), it is characterized in that, it also includes angle orientation plate (2), the second swing angle handle (3) and the first swing angle handle (6) and broach bar (7), described broach bar (7) passes the through hole of angle orientation plate (2) successively and the through hole of the second swing angle handle (3) is fixed in the first swing angle handle (6) and is threaded connection with broach (1), being fixed on broach bar (7) of described angle orientation plate (2) adjustable angle, rotatable being fixed on broach bar (7) of described the second swing angle handle (3).

2. localizer in marrow as claimed in claim 1, is characterized in that, an end face of described angle orientation plate (2) has two steel ball holding tanks (22), and the other end of described angle orientation plate (2) is provided with two shop bolts (13).

3. localizer in marrow as claimed in claim 1, it is characterized in that, described the second swing angle handle (3) has the cylinder of certain angle for end face and bottom surface, the circumference gusset place of described cylindrical bottom end (32) has scale mark, and described scale mark has zero graduation line (34), symmetrical graduation mark, the left and right labelling that increases left and to the right respectively take the zero graduation line as datum line; The two ends symmetry of one diameter line of the bottom surface of described the second swing angle handle be provided with the first ball storage tank (33).

4. localizer in marrow as claimed in claim 3, is characterized in that, also is provided with lock-screw (9) on described the second swing angle handle (3), and described lock-screw is by locked the second swing angle handle (3) of latch segment (10).

5. localizer in marrow as claimed in claim 3, is characterized in that, described the first swing angle handle has tail end and butt end (61), described butt end (61) dock with the bottom of the second swing angle handle and its end face circumference on have middle separated time (62); The two ends symmetry of one diameter line of described docking end face be provided with the second ball storage tank (64); Take described middle separated time (62) as benchmark, be arranged symmetrically with 11 angle grooves (65) that are used for admitting ball on the end face of described butt end (61), described each angle groove all represents an angle as calculated.

6. localizer in marrow as claimed in claim 5, it is characterized in that, described the first swing angle handle (6) has axial through bore, accommodate broach bar (7) in described axial through bore, one end of described broach bar (7) extends the tail end of the first swing angle handle (6), be connected by straight pin with the first swing angle handle, be threaded connection with plug (8).

7. localizer in marrow as claimed in claim 1, is characterized in that, in described marrow, localizer also includes osteotomy plate (5), and described osteotomy plate is arranged on angle orientation plate (2), according to the angle that angle orientation plate (2) is located, knee joint is carried out osteotomy.