US2393694A - Surgical apparatus - Google Patents

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Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
  • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
  • A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors
  • A61B17/66—Alignment, compression or distraction mechanisms
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
  • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
  • A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors

Definitions

• My invention relates to fracture reduction and fixation apparatus ofthe general type known as pin xation splints and relates more specilically to certain new and useful improvements, among which are: an extension bar assembly, a superior pin bar assembly, a distal pin bar assembly, an angulation bracket, a rotational arc assembly, and self-drilling .and anchoring pins to provide maximum rigidity and stiffness bebe inserted at right angles to the shaft of the bone, providing the shortest possible pin length from the bone to the attached pin bar, thereby reducing the spring in the pins to the minimum (firm fixation promotes rapid union) 4.
• a further object is to prov-ide an improved splint having the ⁇ followingI characteristics:
• each pin because of its unique design, is self retaining, permitting the insertion of the pins in any desired plane or angle.
• Adjustment in extension or inspection is effected at any time. without disturbing the alignment ofthe fragments.v y i 5.., Adjustment of. the fragments is manual instead of mechanical, permitting the surgen to feel the crepitus of the ends of the fragments as he brings them into alignment.
• Fig. 1 is a side elevationvand part longitudinal section of my invention in use.
• Y y is a side elevationvand part longitudinal section of my invention in use.
• Fig. 2 isa top plan View of the apparatus, the bone being indicated in dotted lines.
• Fig '3 is an enlarged detail section on the line 3--3 of Fig. 2.
• Fig. 4 is an enlarged detail section on'the line 4-4 of Fig. 2.
• Fig. 5 is an enlarged detail section on thetline 5-5-of Fig. 1. f
• I- and 2 indicate the two parts of an extension bar which is lapjointed as shown in Fig. 1.
• rfhe section I ofthe extension bar has a longitudinal slot 3 -through which a clamping screw 4 passes and is threaded at 9 into the bar section 2.
• a threaded traction rod 5 is anchored at 6 to the extension bar section I and passes freely through an ear I and ⁇ freely into a bore I0 in the extension bar sec-l tion 2, a nut 8 being provided for moving the section 2 toward and from the section I.. v
• the extension bar section I has its free en slotted as at II to receive one, leg of an angle bracket I3. It also has holes I2 for the passage of a clamping bolt I5 that passes through the holes I2 and a hole I4 in bracket I3 and carries a washer 52 and nut 53 for clamping the bracket to. the extension bar for angular adjustment about the axis of the ybolt I2.
• the bracket I3 also has a bolt hole I 8 for the passage of a clamping bolt I9 that passes through the furcations of a superior pin-bar holder I6 and carries a washer 54 and nut 55.
• the superior pin-barholder I6 is provided with a bore 20 to receive the superior pin bar 2 I and is slotted, as at 5S, the furcations thus provided having bolt holes 51 through which pass the clamping bolt 58.
• the bolt 58 carries a washer 59 and nut 60 as best shown in Fig. 5.
• Pin carriers 22 having holes 24'for the pin-,bars are split, as at 23, to form clam-ps, there being bolt holes 25 provided through which pin-clamping bolts 26 pass.
• the bolts 26 havev transverse holes 21 through which the pins pass.
• the bolt 26 carries a washer 6I and nutlll as best shown in Fig. 4.' When nut 64 is tightened pin 28 ('Fig. 4) will be tightly clamped against pincarrierf 2.2 and pin carrier ,22 will be tightly clamped toits pin bar,
• Each traction pin comprisesV a rigid body 28, a chuck, wrench or handle receiving end 29, a
• a reduced portion 3
• 'I'he thread 30 is such as will cut itS own thread in the bone into which it is to be Y inserted.
• the rotational arc 34 is longitudinally slotted,V
• the slide v39 has a tongue 40 to ride in the groove 38 and s lot 31 (see Fig. 3).l 'I'he stud 42 passes through a hole 5
• the distal pin bar is made in two co-axial secvtions 49, the adjacent ends of which are rigidly carried in recesses in the base 50.
• the rods 49 and the base 50 may be made integral if desired.
• Each section 49 of the pin bar has a pin carrier 22 mounted on it to hold the distal pins.
• the rotational arc and the parts carried thereby may be adjusted Yabout the axis of bo1t762; the rotational slide 39 and its carried parts may be adjusted about the axis of the rotational arc; the pin-,bar base 50 may be adjusted about the axis of the stud 50; the. pin carriers on the bar 49 may be independentlyadjusted about the axis of the pin bar; and the pins carried by the pin carriers may be adjusted about the axis oftheir respective pin-clamping bolts. This gives a wide range of adjustments which will enable efficient manipulation and securing the parts of the bone in position.
• and the parts which 'ity carries may be adjusted asa unit about the axis of the pin bar or the pins carried by that pin bar may be severally adjusted independently about said axis.y
• the superior pin-barholder I6 and the'parts carried thereby may be adjusted about the axis of bolt I9 and the bracket I3 and parts carried by it may be adjusted about the axis of the bolt I5. This too gives a wide rangel of adjustments.
• the bone fragments having been transfixed by the pairs of pins arranged, preferably, in
• the pins are secured to the respective pin bars.
• the parts are then manipulated to reduce the fracture and angulate the fragments in proper position for mending.
• By adjusting the nut 8 extension may be applied while retaining alignment of the fragments due to theextensibility of the extension bar and the engagement of the con,-y necting bolt in the slot 3 and the passage'of'the Y rod 5 through the ear 1 into the ⁇
• the Kirschner splint is specially helpful in the treatment of such diiiicult fractures as:
• bracket on said'extension bar a pin bar carried Adjustments in extension are made anytime without returning the patient to the operating table. 5. Manipulating handles, engaging the pin bars, facilitate adjustment of fragments. y
• An ambulatory splint including; anY exten,- sion bar having means for applying traction, said bar being longitudinally slotted at each end, the slot at one end of the bar lying in a planeatright anglesto the slot in the'other end of the bar;
• an extension bar carrying at its ends superior and distal pins; the improvement which comprises: a bifurcated end of the extension bar; an angle bracket one leg of which lies between the furcations of said end; a clamp bolt with nut passing through said furcations and said leg for pivotally-adjustably securing said angle bracket to said extension bar; a pin-bar holder having one end bifurcated to receive, between the furcations of the same, the other leg of said angle bracket; a clamp bolt with nut passing through the last named furcations and said other leg; said pin-bar holder having a pin-bar-receiving hole and being split from said hole to the free end of the pin-bar holder; a clamp bolt with nut passing through the split part of said pinbar holder for clamping the pin bar in place, the pin bar being adjustable longitudinally and rotationally in said holder; and pin carriers slidably and rotatably adjustably mounted on said pin bar.
• an extension bar carrying at its ends superior and distal pins; thev improvement which comprises: a bifurcated end of the extension bar; an angle bracket one leg of which lies between the furcations of said end; a clamp bolt with nut passing through said furcations and said leg for l pivotally-adjustably securing said angle bracket to said extension bar; a pin-bar holder having one end bifurcated to receive, between the furcations of the same, the other leg of said angle bracket; a clamp bolt with nut passing through the last named furcations and said other leg; ⁇ said pinbar holder having a pin-bar-receiving holeA and being split from said hole to the free end of the pin-bar holder; a clamp bolt with nutV passing through the split part of said pin-bar holder for clamping the pin bar in place, the pin bar being adjustable longitudinally and rotationally in said holder; and pin carriers slidably and rotatably adjustably mounted on said pin bar,

Landscapes

• Health & Medical Sciences (AREA)
• Orthopedic Medicine & Surgery (AREA)
• Life Sciences & Earth Sciences (AREA)
• Surgery (AREA)
• Biomedical Technology (AREA)
• Engineering & Computer Science (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Heart & Thoracic Surgery (AREA)
• Medical Informatics (AREA)
• Molecular Biology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Surgical Instruments (AREA)

Description

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=24350222

Family Applications (1)

Country Status (1)

Cited By (50)

• 1945
  • 1945-04-10 US US587545A patent/US2393694A/en not_active Expired - Lifetime

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