CN1657014A

CN1657014A - Location-guiding apparatus for arranging internal guide meedle in femur neck

Info

Publication number: CN1657014A
Application number: CN 200510038514
Authority: CN
Inventors: 戴维享
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-19
Filing date: 2005-03-19
Publication date: 2005-08-24
Anticipated expiration: 2025-03-19
Also published as: CN100391413C

Abstract

A locating-guiding device for arranging an internal guide needle in the femur neck is composed of a guiding unit A with perpendicular three tubes, which consists of a main rod, two perpendicular locating rods with lower holes for inserting the guiding sleeve tube and internal fixing guide needle in them respectively and two locating guide tubes containing the fixing needle, and a guide unit B with parallel two tubes with the holes for inserting guiding sleeve tube.

Description

Location-guiding apparatus for arranging internal guide meedle in femur neck

Technical field

The invention belongs to technical field of medical instruments, is locating apparatus special-purpose in the bone surgery.

Background technology

Along with the raising of progress of science and technology and medical skill, less invasive techniques has obtained the development of advancing by leaps and bounds aspect surgical intervention.The therapeutic method of surgery of traditional minimally-invasive treatment fracture of femoral neck is an X line machine monitoring percutaneous osseous pin internal fixation down, but in the actual operation operating process osseous pin accurately to squeeze into the success rate of neck of femur lower.In order to adapt to the development of orthopaedics less invasive techniques, improve success rate of operation, make fracture of femoral neck percutaneous internal fixation treatment more be tending towards complete, it is extremely urgent to develop a kind of positioning and guiding apparatus that internal fixation guide pin is accurately preset.

Summary of the invention

The objective of the invention is provides a kind of positioning and guiding apparatus reliable for effect for accurately inserting of internal fixation guide pin in the percutaneous internal fixation operation therapeutic process of fracture of femoral neck.

The present invention realizes with following technical scheme: a kind of location-guiding apparatus for arranging internal guide meedle in femur neck is characterized in that it is made up of with the two-tube parallel guider that is used with it tee pipe vertically-guided device; Tee pipe vertically-guided device comprises horizontally disposed mobile jib, left end at mobile jib has two to keep at a certain distance away and the perpendicular positioning bar of mobile jib vertical means on mobile jib, device the mobile jib right-hand member and with vertical two positioning catheters of mobile jib and two locking pins that can insert in the positioning catheter with matching; Have the circular hole that can penetrate guide thimble in the lower end of two perpendicular positioning bars, can penetrate internal fixation guide pin with matching in the guide thimble: two-tube parallel guider is a hard plate, centre bore and 4 locating holes to be selected that can penetrate guide thimble are arranged thereon, between locating hole to be selected and centre bore apart from e ₁, e ₂, e ₃, e ₄Be respectively 10 millimeters, 25 millimeters, 20 millimeters, 13 millimeters.

The upper end of described locking pin is a threaded rod, and in positioning catheter, there is tapping screw thread the lower end by fixed by nut.

The invention has the beneficial effects as follows:

1, simple in structure, easy to operate, accurate positioning;

2, the distance between the positioned parallel conduit can be regulated, and can select the conduit of various different sizes.

Description of drawings

Below in conjunction with drawings and Examples the present invention is described in further detail

Fig. 1 is a tee pipe vertically-guided device structural representation of the present invention;

Fig. 2 is the A-A profile of Fig. 1;

Fig. 3 is the B-B profile of Fig. 1;

Fig. 4 is the C-C profile of Fig. 1;

Fig. 5 is the D-D profile of Fig. 1;

Fig. 6 is the E-E profile of Fig. 1;

Fig. 7 is the mobile jib vertical view;

Fig. 8 is a perpendicular positioning bar structural representation;

Fig. 9 is the A-A profile of Fig. 7;

Figure 10 is the positioning catheter structural representation;

Figure 11 is the A-A structural representation of Figure 40;

Figure 12 is the locking pin structural representation;

Figure 13 is the guide thimble structural representation;

Figure 14 is the side view of Figure 13;

Figure 15 is the fixation guide pin structural representation;

Figure 16 is two-tube parallel guider structural representation.

Among the figure: 1, mobile jib, 2, the perpendicular positioning bar, 3, positioning catheter, 4, locking pin, 5, guide thimble, 6, internal fixation guide pin, 7, fixing slotted hole, 8, circular hole, 9, centre bore, 10,11,12,13, locating hole to be selected.

The specific embodiment

With reference to Fig. 1-15, tee pipe vertically-guided device comprises horizontally disposed mobile jib (1), mobile jib (1) is that a cross section is orthogonal stock, four strip fixing holes (7) are arranged on it, at the left end of mobile jib (1) 2 cross sections that are contained on the mobile jib (1) being arranged is quadrate perpendicular positioning bar (2), at the right-hand member of mobile jib (1) two positioning catheters (3) that are contained in by nut on the mobile jib (1) are arranged, in positioning catheter (3), can insert the locking pin (4) that matches with its centre bore, locking pin (4) upper end is a screw rod, fixing with nut and positioning catheter (3), the lower end is the self tapping screw tap.Guide thimble (5) level is inserted in the circular hole (8) of two perpendicular positioning bars, and internal fixation guide pin (6) penetrates in guide thimble (5).

With reference to Figure 15, two-tube parallel guider is a hard plate, is oval in the present embodiment, also can make other shape.Four locating holes to be selected (10), (11), (12), (13) that centre bore (9) are arranged on it and penetrate by the outside width of cloth of centre bore.The size of centre bore and locating hole to be selected is advisable can penetrate guide thimble, between four locating holes to be selected and the centre bore apart from e ₁, e ₂, e ₃, e ₄Be respectively 10 millimeters, 25 millimeters, 20 millimeters, 13 millimeters.

Its using method is:

1, after anaesthetizing successfully, patient lies on the back on the orthopaedics traction operation table behind the reduction by traction, the monitoring of C type arm X line machine perspective;

2, reset after the success, place axis that this pin perspective of gram determines Ipsilateral neck of femur and femur upper segment in the body surface front side in the projection of body surface front side, and make sign.

3, according to the body surface symbol of neck of femur and femur upper segment axis, determine first and second entry point: first entry point: the intersection point of the body surface symbol line of neck of femur axis and the body surface symbol line of femur upper segment axis; Second entry point: make vertical line from anterior inferior iliac spine to the body surface symbol line of neck of femur axis, with the intersection point of the body surface symbol line of neck of femur axis.

4, respectively squeeze into one piece of diameter 3mm respectively at first, second entry point perpendicular to neck of femur axis and femur upper segment axis and restrain this pin, go deep into the about 5-10mm of sclerotin.

5, will restrain this needle passageway along two pieces of these pins of gram respectively with soft tissue expander and enlarge, tee pipe vertically-guided device will be installed.

6, determine the entry point and the inserting needle direction of first piece of internal fixation guide pin according to guider, point is cut skin, creates inserting needle soft tissue passage along the inserting needle direction, inserts guide thimble (5) outside bony surface to the femur.

7, squeeze into first piece of internal fixation guide pin (6) along guide thimble (5).

8, C type arm X line machine perspective determines whether the implantation site of first piece of internal fixation guide pin is appropriate.

9, determine that first piece of internal fixation guide pin position is appropriate after, adopt two-tube parallel guider to go into 30 ° of the back upper places of pin mark in first piece of internal fixation guide pin, 10-15mm squeezes at the place second piece of internal fixation guide pin, go into 60 ° of the back lower places of pin mark in first piece of internal fixation guide pin, 15-20mm squeezes at the place the 3rd piece of internal fixation guide pin, using method is that guide thimble (5) is inserted in the two-tube parallel guider centre bore (9), goes into pin mark with fixed the 2nd piece of fixation guide pin of locating hole to be selected.

10, C type arm X has an X-rayed through machine, determines the position of second, third piece internal fixation guide pin.

Claims

1, a kind of location-guiding apparatus for arranging internal guide meedle in femur neck is characterized in that it is made up of with the two-tube parallel guider that is used with it tee pipe vertically-guided device; Tee pipe vertically-guided device comprises horizontally disposed mobile jib (1), left end at mobile jib (1) has two to keep at a certain distance away and the perpendicular positioning bar (2) of mobile jib vertical means on mobile jib, the device mobile jib (1) right-hand member and with vertical two positioning catheters of mobile jib (3) and two locking pins (4) that can insert in the positioning catheter (3) with matching; Have the circular hole (8) that can penetrate guide thimble (5) in the lower end of two perpendicular positioning bars (2), can penetrate internal fixation guide pin with matching (6) in the guide thimble (5); Two-tube parallel guider is a hard plate, the centre bore (9) that can penetrate guide thimble (5) and 4 locating holes to be selected (10), (11), (12), (13) are arranged thereon, between locating hole to be selected (10), (11), (12), (13) and centre bore apart from e ₁, e ₂, e ₃, e ₄Be respectively 10 millimeters, 25 millimeters, 20 millimeters, 13 millimeters.

2, a kind of location-guiding apparatus for arranging internal guide meedle in femur neck according to claim 1, it is characterized in that the rectangular fixing hole (7) of adjusting perpendicular positioning bar (2), positioning catheter (3) position is arranged on the mobile jib (1) of tee pipe vertically-guided device, perpendicular positioning bar, positioning catheter with fixed by nut on mobile jib (1).

3, a kind of location-guiding apparatus for arranging internal guide meedle in femur neck according to claim 1, the upper end that it is characterized in that locking pin (4) are threaded rod (1), and in positioning catheter (3), the lower end is the self tapping screw tap by fixed by nut.