CN202843800U

CN202843800U - Thoracolumbar spine nail bat angle and distance measuring instrument

Info

Publication number: CN202843800U
Application number: CN201220512035XU
Authority: CN
Inventors: 黄志海
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-08
Filing date: 2012-10-08
Publication date: 2013-04-03
Anticipated expiration: 2022-10-08

Abstract

The utility model discloses a thoracolumbar spine nail bat angle and distance measuring instrument which comprises a cross-shaped suite, a measuring scale, screw angle measuring rods and fixed bar measuring sleeve rods. The cross-shaped suite is two casing pipes which are perpendicular and next to each other and not communicated. The measuring scale comprises a cylindrical main rod, wherein a semicircular angle measuring dial plate is connected with the right end of the rod body, an angle pointer is arranged on the angle measuring dial plate, and a rotary concave fixture block is arranged on the back side of the angle measuring dial plate. The screw angle measuring rods are two cylindrical metal rods, wherein one end of each metal bar is provided with threads. The number of the fixed bar measuring sleeve rods is two, wherein a round sleeve port is arranged at one end of each fixed bar measuring sleeve rod. The thoracolumbar spine nail bat angle and distance measuring instrument is capable of measuring angles and distances between pedicle screws in real time in an operation, helping a doctor determine the bending angle and cutting length of a fixed bar, measuring and verifying the degree of curve and length of the fixed bar in real time, and therefore accurate and quantization control of spine orthopedic operation is achieved.

Description

Thoracolumbar disk follows closely rod angular distance measuring instrument

Technical field

The utility model is related to a kind of medical assistance apparatus of pedicle screw implant surgery, specifically a kind of to be used in art angle, distance and measurement hold-down bars bending curvature and measurement of length instrument between measurement implantation pedicle screw.

Technical background

Nail-stick system is the most important internal fixation system of current thoracic and lumbar vertebral posterior operation, and its function is also had concurrently in reset, orthopedic effect, the operative treatment for being widely used in the diseases such as thoracolumbar fracture, spondylolishesis in addition to fixation, stable backbone.Observed in clinic the reset that is produced using spine nail rod internal fixation system of different patients, orthopedic effect exist on notable difference, or even same patient difference case there is also it is identical the problem of.Meanwhile, if improper use, the deformity of backbone can be aggravated on the contrary sometimes, so as to influence actual efficacy.Cause problem above main reason is that：The Via Posterior Spinal Approach internal fixation operation of judgement when carrying out to(for) angle between pedicle screw and hold-down bars bending curvature fully relies on range estimation and the experience of surgical staff, there is presently no the measuring instrument measured angle pedicle nail and bending rod curvature in a kind of art simultaneously, thus it can not accomplish accurate for spinal orthopedic procedure and quantify.

The content of the invention

Technical problem to be solved in the utility model is that proposition is a kind of can measure the angle and distance between pedicle screw immediately in art, patient is helped to determine the bending angle of hold-down bars and the Thoracolumbar disk nail rod angular distance measuring instrument of hold-down bars intercepted length, it simultaneously can be in art to hold-down bars curvature, length measure and verify immediately, so as to reach the purpose that accurate and quantified controlling is carried out to spinal orthopedic procedure.

In order to solve the above technical problems, the utility model Thoracolumbar disk nail rod angular distance measuring instrument includes cross external member, measuring scale, screw angle measurement bar and hold-down bars measurement loop bar；The cross external member is two and is mutually perpendicular to close to and is circle inside not connected sleeve pipe, described sleeve pipe；The measuring scale includes a cylindrical body bar, and the shaft frontal left of the cylindrical body bar is distance scale chi, and shaft right-hand member is connected with a semicircular angular surveying dial plate；The front of the angle measuring gauge disk center point is provided with an angle indicator, and the back side is provided with and the angle indicator axis parallel and the rotatable concavity fixture block that is connected；The screw angle measurement bar has two, is the cylindrical metal bar of TOE；The hold-down bars measurement loop bar has two, and one end of the every hold-down bars measurement loop bar is provided with circular running-on.

Above-mentioned Thoracolumbar disk follows closely rod angular distance measuring instrument, and the jacket exterior of the cross external member is tubulose or the irregular body of square composition.

Above-mentioned Thoracolumbar disk follows closely rod angular distance measuring instrument, and the front of the horizontal sleeve pipe of the cross external member is provided with the center mark line that the vertical pipes are indicated above a " V " shape observation window, the window of the observation window.

Above-mentioned Thoracolumbar disk follows closely rod angular distance measuring instrument, and the both sides of the angular surveying dial plate, which has been engraved, be respectively equipped with a fixing nut with the mutually corresponding position in arc duct on arc duct, the cylindrical body bar.

The utility model is as a result of above-mentioned technical pattern, it can measure the angle and distance between pedicle screw immediately in art, patient is helped to determine the bending angle of hold-down bars and the length of interception hold-down bars, and can be in art to hold-down bars curvature, length measure and verify immediately, so as to reach the purpose that accurate and quantified controlling is carried out to spinal orthopedic procedure.

Brief description of the drawings

Fig. 1 is the positive structure schematic of the utility model measuring instrument；

Fig. 2 is the structure schematic diagram of the utility model measuring instrument；

Fig. 3 is the overlooking the structure diagram of the utility model measuring instrument；

Fig. 4 is the structural representation of the screw angle measurement bar of the utility model measuring instrument；

Fig. 5 is that the hold-down bars of the utility model measuring instrument measures the structural representation of loop bar.

Embodiment

As shown in Figure 1, Figure 2 and Figure 3, the utility model Thoracolumbar disk nail rod angular distance measuring instrument includes cross external member 1, measuring scale 2, screw angle measurement bar 3 and hold-down bars measurement loop bar 4, cross external member 1 is mutually perpendicular to close to the sleeve pipe being not communicated with for two, inside pipe casing is circle, the irregular body that jacket exterior can constitute for tubulose or square, there is the center mark line 14 that vertical pipes 13 are indicated above a " V " shape observation window 12, the window of observation window 12 in the front of wherein horizontal sleeve pipe 11.Measuring scale 2 includes a cylindrical body bar 21, the shaft frontal left of cylindrical body bar 21 is distance scale chi, it is carved with length mark, the shaft right-hand member of cylindrical body bar 21 is connected with a semicircular angular surveying dial plate 22, and baseline and the axle center of cylindrical body bar 21 of angular surveying dial plate 22 are in same level.The front of the central point of angular surveying dial plate 22 is provided with an angle indicator 23, and the back side is provided with and pointer axis parallel and the concavity fixture block 24 of rotatable rectangle half that is connected.The both sides of angular surveying dial plate 22 to have been engraved and be respectively equipped with a fixing nut 26 with the corresponding position in arc duct 25 on arc duct 25, cylindrical body bar 21, the machine error for correcting angle.

As shown in Figure 4, screw angle measurement bar 3 is the cylindrical metal bar of two TOEs, the screw thread specification of pedicle screw fixing nut of its screw thread with being used in art is consistent, the end of thread is connected with pedicle screw tail end, tail end can be inserted in the vertical pipes 13 of cross external member 1, can also be in close contact with the concavity fixture block 24 of rectangle half at the back side of angular surveying dial plate 22.

As shown in Figure 5, hold-down bars measurement loop bar 4 has two, one end of every loop bar 4 is with certain thickness circular running-on, the hold-down bars diameter of internal fixation system of its internal diameter with being used in art is consistent, it is in close contact both when using and does not produce space, tail end can be inserted in the vertical pipes 13 of cross external member 1, can also be in close contact with the concavity fixture block 24 of rectangle half at the back side of angular surveying dial plate 22.

During Clinical practice：1st, the angular surveying between pedicle screw：It will be inserted on the left of the shaft of cylindrical body bar 21 in the horizontal sleeve pipe 11 of cross external member 1, the end of thread of screw angle measurement bar 3 screws in pedicle screw tail end, the tail end of wherein one screw angle measurement bar 3 is inserted in the vertical pipes 13 of cross external member 1, and the tail end of another screw angle measurement bar 3 is caught in the concavity fixture block 24 of rectangle half at the back side of measuring scale 2, the angle between screw can be read by the positive angle indicator 23 of measuring scale 2.2nd, the distance between pedicle screw is measured：Measuring scale 2 and cross external member 1 are displaced downwardly to pedicle screw tail end along screw angle measurement bar 3, the distance between two pieces of pedicle screw central points can be read at once by the length scales of the cylindrical body bar 21 of measuring scale 2.3rd, the bending curvature measurement of hold-down bars：Cross external member 1 and measuring scale 2 are combined, the circular running-on that hold-down bars is measured into loop bar 4 is inserted in the hold-down bars two ends for needing to measure, the tail end of wherein one hold-down bars measurement loop bar 4 is inserted in the vertical pipes 13 of cross external member 1, and the tail end of another hold-down bars measurement loop bar 4 is caught in the concavity fixture block 24 of rectangle half at the back side of measuring scale 2, the bending angle of hold-down bars can be read by the positive angle indicator 23 of measuring scale 2.4th, using measuring scale 2 the positive scale of cylindrical body bar 21 can also direct measurement pedicle screw distance and the length of hold-down bars.5th, angular surveying calibrates for error：Rod always is first taken in art, straight rod two ends are inserted in respectively by what two hold-down bars measured loop bar 4, the other end of two hold-down bars measurement loop bars 4 is inserted in the vertical pipes 13 of cross external member 1 and is caught in the concavity fixture block 24 of 2 back side rectangle of measuring scale half respectively, adjustment angle measures dial plate 22, pointer is located at 0 °, be screwed angular surveying dial plate 22 again afterwards.

Claims

1. Thoracolumbar disk follows closely rod angular distance measuring instrument, it is characterised in that it includes cross external member, measuring scale, screw angle measurement bar and hold-down bars measurement loop bar；The cross external member is two and is mutually perpendicular to close to and is circle inside not connected sleeve pipe, described sleeve pipe；The measuring scale includes a cylindrical body bar, and the shaft frontal left of the cylindrical body bar is distance scale chi, and shaft right-hand member is connected with a semicircular angular surveying dial plate；The front of the angle measuring gauge disk center point is provided with an angle indicator, and the back side is provided with and the angle indicator axis parallel and the rotatable concavity fixture block that is connected；The screw angle measurement bar has two, is the cylindrical metal bar of TOE；The hold-down bars measurement loop bar has two, and one end of the every hold-down bars measurement loop bar is provided with circular running-on.

2. Thoracolumbar disk as claimed in claim 1 follows closely rod angular distance measuring instrument, it is characterised in that the jacket exterior of the cross external member is the irregular body that tubulose or square are constituted.

3. Thoracolumbar disk as claimed in claim 1 or 2 follows closely rod angular distance measuring instrument, it is characterised in that the front of the horizontal sleeve pipe of the cross external member is provided with the center mark line that the vertical pipes are indicated above a " V " shape observation window, the window of the observation window.

4. Thoracolumbar disk as claimed in claim 1 or 2 follows closely rod angular distance measuring instrument, it is characterised in that to have engraved and be respectively equipped with a fixing nut with the mutually corresponding position in arc duct on arc duct, the cylindrical body bar in the both sides of the angular surveying dial plate.