CN203290909U

CN203290909U - Laser ruler for surgery

Info

Publication number: CN203290909U
Application number: CN201320352136XU
Authority: CN
Inventors: 张英泽; 陈伟; 张奇; 王娟
Original assignee: 张英泽
Priority date: 2013-06-19
Filing date: 2013-06-19
Publication date: 2013-11-20
Anticipated expiration: 2023-06-19

Abstract

The utility model discloses a laser ruler for surgery and belongs to the technical field of measuring. The technical scheme includes that the laser ruler comprises a laser light source, a transparent ruler and a shell, the front wall of the shell is provided with a light outlet, the laser light source is fixed on the internal rear portion of the shell, the light outgoing face of the laser light source is opposite to the light outlet on the front wall of the shell, and the transparent ruler covers on the light outlet of the shell. By the laser ruler, scales of the transparent ruler are projected onto tested human tissue to realize noncontact measuring of tissue-defect and cut-transplanted objects. The laser ruler is needless for sterilization and free of limiting of operational space, tissue defect of deep incisions can be conveniently and accurately measured, and surgical operations cannot be affected when real-time measuring is performed during surgery, so that surgical efficiency can be effectively improved, and suffering of patients can be reduced.

Description

The surgical operation laser ruler

Technical field

This utility model relate to a kind of when surgical operation, use be used to measuring the laser ruler of tissue length, belong to field of measuring technique.

Background technology

In Orthopedic Clinical practice, may there be tissue defect in the patient, and for example skin injury, bone are damaged, Tendon Defection, nervus vasculairs major injury or damaged, when repair tissue is damaged, often need to cut autologous bone, tendon, blood vessel, nerve etc.In addition, common disease or the deformities of orthopaedics such as cervical spondylosis, prolapse of lumbar intervertebral disc or tuberculosis of spine, cacomelia or cripetura, in treatment, often need between row pyramidal support bone grafting, vertebral plate the operation such as bone grafting or the damaged bone grafting of bone between bone grafting or articular process, during treatment, also need to cut autologous bone transplanting.Cut abundant tissue repair damaged in, autograft is long, excessive and increase surgical injury for fear of cutting, and needs precise quantification to measure damaged length, area and volume, and cuts graft according to the digital quantization of measuring.

At present, in clinical practice, generally using common ruler as the survey tool of tissue or tissue defect, and its shortcoming is the preoperative sterilization that needs, and operates more loaded down with trivial details, and, due to the restriction of working place, while in art, using, can't accurately measure the tissue defect of otch depths.In addition, utilizing common ruler in art, to carry out real-time measurement also can affect operation technique, causes operating time to extend, and to the patient, causes larger misery.Therefore, how to facilitate and to measure exactly tissue damaged and quantize to cut graft and just become the difficult problem that the medical worker faces.

The utility model content

The purpose of this utility model is the drawback for prior art, provides a kind of can facilitating and to measure exactly tissue damaged and quantize to cut the surgical operation laser ruler of graft.

Problem described in the utility model realizes with following technical proposals:

A kind of surgical operation laser ruler, formation comprises LASER Light Source, transparent ruler and the antetheca housing with light-emitting window, described LASER Light Source is fixed on the interior rear portion of housing, and its exiting surface is relative with the light-emitting window on the housing antetheca, and described transparent ruler shutoff is on the light-emitting window of housing.

Above-mentioned surgical operation laser ruler, in formation, also comprise light shielding device, described light shielding device comprises that two are positioned at same plane and the rectangular laser baffle plate vertical with the optical axis of LASER Light Source, the two is between the antetheca of LASER Light Source and housing, and two sides of each laser shutter are slidably connected by two sidewalls of two upright slide rails and housing respectively.

Above-mentioned surgical operation laser ruler, described light shielding device also comprises baffle plate adjusting device, described baffle plate adjusting device comprises two screws and two vertical screw mandrels, two screws are separately fixed on two laser shutter, the top board that two screw mandrels pass respectively housing is with base plate and by two bearings, with housing, be connected respectively, the two end that is positioned at enclosure interior screws in respectively two screws, and an end that is positioned at hull outside is provided with the baffle plate adjusting knob.

Above-mentioned surgical operation laser ruler, described LASER Light Source comprises laser instrument and concavees lens, and described laser instrument is fixed on the rear wall of housing, and its exiting surface is relative with the light-emitting window on the housing antetheca, and described concavees lens are positioned at the anterior of laser instrument and are fixedly connected with housing.

Above-mentioned surgical operation laser ruler, described LASER Light Source also comprises convex lens, and described convex lens is positioned at the anterior and coaxial with concavees lens of concavees lens, and its rear side focus overlaps with the rear side focus of concavees lens.

This utility model projects to the scale of transparent ruler in tested person soma with laser, realization is to tissue defect and the remote non-cpntact measurement that cuts graft, this device is without sterilization, be not subjected to the restriction of working place yet, can facilitate and accurately measure the tissue defect of otch depths, in art, carry out measuring and and guiding the Shi Buhui that cuts of autograft to affect operation technique in real time, thereby can effectively improve operation efficiency, alleviate patient's misery.

Light shielding device is for the range of exposures of regulating laser, and the border that makes hot spot sideline and tissue defect or cut graft overlaps, and is convenient to like this reading of laser ruler and cutting of graft.

The accompanying drawing explanation

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is LASER Light Source structural representation of the present utility model while being divergent light source;

Fig. 2 is LASER Light Source measuring principle figure of the present utility model while being divergent light source;

Fig. 3 is the index path of LASER Light Source while being divergent light source;

Fig. 4 is LASER Light Source structural representation of the present utility model while being source of parallel light;

Fig. 5 is the index path of LASER Light Source while being source of parallel light.

In figure, each label is: 1, housing, 2, laser instrument, 3, concavees lens, 4, screw, 5, the baffle plate adjusting knob, 6, screw mandrel, 7, laser shutter, 8, transparent ruler, 9, upright slide rail, 10, convex lens, 11, tissue.

The specific embodiment

This utility model comprises housing 1, LASER Light Source, light shielding device and transparent ruler 8, and wherein, light shielding device comprises screw 4, baffle plate adjusting knob 5, screw mandrel 6, laser shutter 7 and upright slide rail 9.Transparent ruler 8 is arranged on the light-emitting window of housing 1 front portion, and the light that LASER Light Source sends is radiated in tested person soma through transparent ruler 8.Butterfly adjusting knob 5 can make screw 4 move up and down along screw mandrel 6, and the laser shutter 7 that is connected with screw 4 slides up and down along upright slide rail 9 under the drive of screw 4, so the distance between two laser shutter 7 changes, reaches the purpose of regulating the light belt width.

This utility model LASER Light Source used has two kinds of structures, a kind of is divergent light source, a kind of is source of parallel light, divergent light source forms (referring to Fig. 1) by laser instrument 2 and concavees lens 3, the directional light that laser instrument 2 sends becomes diverging light after concavees lens 3 refractions, the reverse extending line of light is through the focal point F (referring to Fig. 3) of concavees lens 3 rear sides, and transparent ruler 8 is exaggerated after projecting on tissue 11, so its reading also needs to be revised by calculating.The reading of supposing transparent ruler 8 is X, the intersection point with A represents the graduated one side of transparent ruler 8 and the optical axis of concavees lens 3, represent the optical axis of concavees lens 3 and the intersection point on tested person soma surface, revised length value with B YBy following formula, calculated:

Obviously, revised numerical value is greater than the reading of transparent ruler 8.Although while adopting divergent light source, need to revise measurement result, laser ruler simple in structure, small volume, cost are also lower.

Source of parallel light forms (referring to Fig. 4) by laser instrument 2, concavees lens 3 and convex lens 10, coaxial and the rear side focus of concavees lens 3 and convex lens 10 overlaps, the directional light that laser instrument 2 sends becomes the focal point F of the reverse extending line of diverging light and light through concavees lens 3 rear sides after concavees lens 3 refractions, after 10 refractions of diverging light planoconvex lens, become again directional light.Due to what pass transparent ruler 8, be directional light, thus transparent ruler 8 after projecting on tissue 11, can not be exaggerated or dwindle, can be from tissue, directly reading length value.While adopting source of parallel light, the measurement result of laser ruler is without correction, very easy to use, but because laser ruler inside has increased convex lens 10, so the complicated structure of laser ruler, volume ratio large (diameter of convex lens 10 must greater than the measuring range of laser ruler).Two kinds of LASER Light Sources respectively have pluses and minuses, during use, can choose according to practical situation.

Using method:

The light-emitting window of housing 1 is aimed at and needed the tissue of measuring, and make the surface of the optical axis of LASER Light Source perpendicular to tested person soma, open laser instrument 2, observe transparent ruler 8 in the lip-deep projection of tissue, read the length value of tested part, if what adopt is divergent light source, also to revise measurement result.

Before reading, all right controllable register adjusting knob 5, make two borders of hot spot on tissue overlap with two borders in zone to be measured, and this moment, the width of hot spot equaled length value to be measured, according to the border of hot spot, graft was cut, and can guarantee cutting accuracy.

Claims

1. surgical operation laser ruler, it is characterized in that, it comprises LASER Light Source, transparent ruler (8) and the antetheca housing (1) with light-emitting window, described LASER Light Source is fixed on the interior rear portion of housing (1), its exiting surface is relative with the light-emitting window on housing (1) antetheca, and described transparent ruler (8) shutoff is on the light-emitting window of housing (1).

2. surgical operation laser ruler according to claim 1, it is characterized in that, in formation, also comprise light shielding device, described light shielding device comprises that two are positioned at same plane and the rectangular laser baffle plate (7) vertical with the optical axis of LASER Light Source, the two is positioned between the antetheca of LASER Light Source and housing (1), and two sides of each laser shutter (7) are slidably connected by two upright slide rails (9) and two sidewalls of housing (1) respectively.

3. surgical operation laser ruler according to claim 2, it is characterized in that, described light shielding device also comprises baffle plate adjusting device, described baffle plate adjusting device comprises two screws (4) and two vertical screw mandrels (6), two screws (4) are separately fixed on two laser shutter (7), the top board that two screw mandrels (6) pass respectively housing (1) also is connected with housing (1) by two bearings respectively with base plate, the two is positioned at the inner end of housing (1) and screws in respectively two screws (4), be positioned at the outside end of housing (1) and be provided with baffle plate adjusting knob (5).

4. surgical operation laser ruler according to claim 1 and 2, it is characterized in that, described LASER Light Source comprises laser instrument (2) and concavees lens (3), described laser instrument (2) is fixed on the rear wall of housing (1), its exiting surface is relative with the light-emitting window on housing (1) antetheca, and described concavees lens (3) are positioned at the anterior of laser instrument (2) and are fixedly connected with housing (1).

5. surgical operation laser ruler according to claim 4, it is characterized in that, described LASER Light Source also comprises convex lens (10), and described convex lens (10) is positioned at the anterior and coaxial with concavees lens (3) of concavees lens (3), and its rear side focus overlaps with the rear side focus of concavees lens (3).