CN208677549U

CN208677549U - A kind of intertrochanter fracture of femur combined splint inner fixing device and auxiliary sight tool

Info

Publication number: CN208677549U
Application number: CN201820204407.XU
Authority: CN
Inventors: 魏奇峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-02-06
Filing date: 2018-02-06
Publication date: 2019-04-02
Anticipated expiration: 2028-02-06

Abstract

A kind of intertrochanter fracture of femur combined splint inner fixing device, the defect of fixation that is strong and meeting biomethanics can not be provided near end of thighbone by solving inner fixing device existing in the prior art, the present apparatus is mainly additionally arranged inside away from bone plate, the clamp structure for inside and outside femur and clamping near end of thighbone is respectively placed in away from bone plate and outside bone plate using inside, and by inside fixed after outside bone plate pedicle screw away from bone plate.It is corresponding, matching used auxiliary sight tool has also been devised in the utility model, there are two gripper jaws for auxiliary sight tool tool, can be respectively used to fixing clamp and handle inside away from bone plate and outside bone plate, and remain that bone plate corresponding screw hole in medial and lateral keeps concentric position.The most beneficial effect of the utility model is: can provide the interior fixation of near end of thighbone medial and lateral absolute stability simultaneously, and shearing resistance, anti-rotation ability are strong.Its another design structure is simple, has certain versatility with existing internal fixation system section components.

Description

A kind of intertrochanter fracture of femur combined splint inner fixing device and auxiliary sight tool

Technical field

The utility model belongs to orthopedic medical device field, consolidates in specifically a kind of intertrochanter fracture of femur combined splint Determine device and auxiliary sight tool.

Background technique

Clinical common one of the Hip Fracture of intertrochanter fracture of femur fracture, is apt to occur in the elderly, has data to show its hair Sick rate accounts for 3 ~ 4% all to fracture.The ununified standard of the treatment of intertrochanter fracture of femur fracture at present, exterior fixing rack, people Work femoral head replacement and internal fixation system simultaneously deposit development, recently as the sliding continuous development of Internal fixation Pressure system and complete It is kind, because it has pressurization and sliding dual function, at the mainstream of operative treatment intertrochanter fracture of femur.LCP system (Locking Compresion Plate System locked pressurized bone plate system) is used as a kind of internal fixation system, in femur It needs first femur reset in intertrochanteric fracture operation then to be fixed in lateral side of femur with bone plate and screw.LCP system is made For internal fixation system outside unilateral marrow, existing deficiency is: especially in the middle and lower sections of neck of femur, there are biggish at neck of femur Stress is concentrated, and the pressuring stress level of tensile stress and inside on the outside of neck of femur is high, has stress to uprush when close to surface Phenomenon, the outer internal fixation system of the marrow in single outside is smaller to the action of compressive stress for mitigating inside, solid outside the marrow of intertrochanter fracture of femur It is big compared with Medullary fixation shearing force to determine mode, LCP system lacks preferable shearing resistance measure；LCP system is in configurational stabilisation Deficiency is larger to the damage of sclerotin using making up by the way of mostly using lock screw, while influencing the blood fortune of tuberosity part, extension Recovery time.And gerontal patient is often accompanied by osteoporosis problem, fixation is not enough securely affected to the success rate of operation.

Utility model content

The utility model to solve the above problems, provide a kind of Titanic micro-plates device for meeting biomethanics structure, Fully meet a kind of combined splint inner fixing device and matched auxiliary sight tool of intertrochanter fracture of femur.

The technical solution of the utility model is: a kind of intertrochanter fracture of femur combined splint inner fixing device, including outer Bone plate, main lock screw, supporting screw, greater trochanter screw and distal end fixing screws are flanked, the outside bone plate is in femur It is close to below greater trochanter and near end of thighbone lateral cortex, a group far end fixing screw hole and one is distributed on the bone plate of outside The main lock hole and supporting screw hole that group is obliquely installed, the main lock screw, supporting screw, distal end fixing screws respectively with Corresponding screw hole is threadedly coupled on the bone plate of outside, and the greater trochanter screw passes through greater trochanter of femur, further includes inside away from connecing Bone plate, the inside are close to away from bone plate below femoral head and with cortex on the inside of near end of thighbone, and inside on bone plate away from having The screw hole being adapted with supporting screw, distal end fixing screws and greater trochanter screw, the greater trochanter screw, supporting screw and remote The front end of end fixing screws is threadedly coupled with inside away from bone plate, is constituted inside away from bone plate and outside bone plate and is respectively placed in stock The clamp structure of near end of thighbone is clamped inside and outside bone.

The auxiliary sight tool of the utility model the technical solution adopted is that: a kind of auxiliary sight tool, including aim at arm, Outside bone plate gripper jaw, inside away from bone plate gripper jaw, linking arm, outside bone plate jackscrew and inside away from bone plate jackscrew, The outside bone plate gripper jaw is fixedly connected with arm is aimed at, and one end and inside of the linking arm are away from bone plate gripper jaw It is fixedly connected, the other end of linking arm is fixedly connected by bolt with arm is aimed at, the outside bone plate gripper jaw and inside Corresponding away from bone plate gripper jaw position, outside bone plate jackscrew is threadedly coupled with arm is aimed at, and inside is away from bone plate jackscrew and company Connect arm threaded connection.

The most beneficial effect of the utility model is: above-mentioned intertrochanter fracture of femur combined splint inner fixing device has Inside is located at below femoral head away from bone plate, is close to cortex on the inside of bigelow's septum portion, and inside is total away from bone plate and outside bone plate Same being integrally formed fixator and the structure for clamping near end of thighbone, compare existing Internal fixation technology advantage outstanding: can be simultaneously The interior fixation of near end of thighbone medial and lateral absolute stability is provided, and shearing resistance, anti-rotation ability are strong.Its another design structure is simple, and existing Internal fixation system section components have certain versatility.Other than providing stability to femoral bone tuberosity lateral wall, emphasis is pair Away from powerful supporting role is provided on the inside of femur, to constitute fixed structure in globality biomethanics, while can simplify in art It resets requirement and has both part apparent shearing resistance, anti-rotation ability, keep internal fixation operation simpler effectively, completely secured

The utility model also Aided design has auxiliary sight tool, and auxiliary sight tool has a pair of of gripper jaw, can basis The state of an illness suitably carries out fracture Micro-operation using dedicated aiming arm, reduces the damage to patient.

The utility model is further described in detail with reference to the accompanying drawings and detailed description.

Detailed description of the invention

Attached drawing 1 is the structural schematic diagram of the utility model one embodiment；

Attached drawing 2 is the structural schematic diagram of second embodiment of the utility model；

Attached drawing 3 is the crossover location relation schematic diagram of main lock screw and greater trochanter screw；

Attached drawing 4 is the structural schematic diagram of auxiliary sight tool.

Wherein, 1 outside bone plate, bone plate holds plate incisura, 1-2 groove, 2 greater trochanters and rebuilds locking hook plate, 3 on the outside of 1-1 Main lock screw, 4 greater trochanter screws, 5 supporting screws, 6 distal end fixing screws, 7 insides are away from bone plate, the inside 7-1 away from bone plate Plate incisura, 8 femurs, 8-1 greater trochanter, 8-2 near end of thighbone, 8-3 femoral head, 9-1 is held to aim at arm, 9-2 linking arm, 9-3 and flank outside Away from bone plate jackscrew, 9-6 bolt on the outside of bone plate gripper jaw, 9-5 on the inside of bone plate gripper jaw, 9-4.

Specific embodiment

Embodiment 1: as shown in Fig. 1, a kind of intertrochanter fracture of femur combined splint inner fixing device, including flank outside Bone plate 1, inside are away from bone plate 7, main lock screw 3, supporting screw 5, greater trochanter screw 4 and distal end fixing screws 6, outside synthetism Plate 1 is close to below greater trochanter of femur 8-1 and near end of thighbone 8-2 lateral cortex, and a group far end is distributed on outside bone plate 1 Fixing screw hole and one group of main lock hole being obliquely installed and supporting screw hole, the main lock screw 3,5 and of supporting screw Distal end fixing screws 6 are threadedly coupled with screw hole corresponding on the bone plate of outside respectively, and it is big that the greater trochanter screw 4 passes through femur Rotor 8-1, the inside are close to away from bone plate 7 below femoral head 8-3 and with cortex on the inside of near end of thighbone 8-2, inside away from There are the screw hole being adapted with supporting screw 5, distal end fixing screws 6 and greater trochanter screw 4, the greater trochanter spiral shell on bone plate 7 Nail 4, supporting screw 5 and distal end fixing screws 6 front end is threadedly coupled with inside away from bone plate 7, constitute on the outside of bone plate 1 and interior Side is respectively placed in the clamp structure that near end of thighbone 8-2 is clamped inside and outside femur 8 away from bone plate 7.Inside uses titanium away from bone plate 7 Matter 3.5mm Anatomical Reconstruction bone plate, screw hole number can match with lesser trochanter of femur cortex for 4 holes or 5 holes, shape, belong to non- Regular anatomical form differential of the arc bone plate.

Embodiment 2: referring to attached drawing 2, compared with Example 1, more greater trochanters rebuild locking hook plate 2, the greater trochanter It rebuilds locking hook plate 2 and is equipped with one group of screw hole, greater trochanter is rebuild locking hook plate 2 and is covered on greater trochanter 8-1, described outer to flank 1 upper end of bone plate is equipped with groove 1-2, and greater trochanter is rebuild 2 lower end of locking hook plate and is embedded in the 1 groove 1-2 of bone plate of outside, the master 3 rear end of lock screw and outside bone plate 1 and greater trochanter are rebuild locking hook plate 2 and are threadedly coupled, 4 rear end of greater trochanter screw and Greater trochanter is rebuild locking hook plate 2 and is threadedly coupled.Greater trochanter rebuilds locking hook plate 2 and is used as optional component, fractures according to patient is practical Situation decides whether to select.

In the present embodiment, further, the main lock screw 3 is two, and the rear end of two main lock screws 3 is same On horizontal line, the greater trochanter screw 4 is between two main lock screws 3.

In the present embodiment, further, the crosspoint of the main lock screw 3 and the greater trochanter screw 4 is in ward tri- Angular region.It should be noted that two main lock screws 3 and greater trochanter screw 4 not in contact with.

In the present embodiment, further, the front end of the main lock screw 3 is symmetrical towards two main lock screws 3 The poly- heart biasing in face.The front end of main lock screw 3 is that the front end of main lock screw 3 has using micro- poly- heart design, micro- poly- heart The trend drawn close, two main lock screws 3 have certain angle, meet neck of femur anatomical structure and increase the holding to sclerotin Power, anti-retaining nail.

Embodiment 3

Referring to attached drawing 4, a kind of auxiliary sight tool, including arm 9-1, outside bone plate gripper jaw 9-3, inside are aimed at away from connecing Bone plate gripper jaw 9-4, linking arm 9-2, outside bone plate jackscrew 9-5 and inside are away from bone plate jackscrew, the outside bone plate Gripper jaw 9-3 is fixedly connected with arm 9-1 is aimed at, and one end and inside of the linking arm 9-2 is fixed away from bone plate gripper jaw 9-4 The other end of connection, linking arm 9-2 is fixedly connected by bolt 9-6 with arm 9-1 is aimed at, the outside bone plate gripper jaw 9- 3 is corresponding away from the bone plate position gripper jaw 9-4 with inside, and outside bone plate jackscrew 9-5 is threadedly coupled with arm 9-1 is aimed at, inside It is threadedly coupled away from bone plate jackscrew with linking arm 9-2.

Outside bone plate gripper jaw 9-3 and inside are fixed together away from bone plate gripper jaw 9-4, and position is opposite, when two When a pawl clamps outside bone plate 1 and inside away from bone plate 7 respectively, arm away from bone plate 7 and is aimed in outside bone plate 1, inside Screwhole position on 9-1 keeps corresponding to.

Further, the front end area that bone plate gripper jaw 9-3 is surrounded on the outside of the outside bone plate jackscrew 9-5 In, the front end of the inside away from bone plate jackscrew is in the section that inside is surrounded away from bone plate gripper jaw 9-4.

In actual work, outside bone plate gripper jaw 9-3 catches the outside bone plate on the bone plate 1 of outside to hold plate incisura 1- 1, in the present embodiment, outside bone plate gripper jaw 9-3 selects four paws or the design of five pawls, is required to one outside bone plate of each correspondence Plate incisura 1-1 is held, then outside bone plate 1 is irremovable on its length direction and width direction, tightens outside bone plate jackscrew 9-5, outside bone plate jackscrew 9-5 withstand outside bone plate 1, and outside bone plate 1 is also irremovable in the thickness direction thereof at this time, Complete the fixation for externally flanking bone plate 1.Inside in the same way, can clamp inside away from synthetism away from bone plate gripper jaw 9-4 Inside is not shown away from bone plate jackscrew due to visual angle in plate 7 in attached drawing 4.

When specific operation: patient's dorsal position after general anaesthesia success takes operative approach on the outside of near end of thighbone, sufficiently exposes bone The broken ends of fractured bone resets after rolling over end, and blunt separation stock proximal end surrounding soft tissue, is routine operation above；First it is about to inside away from bone plate 7 Inside hold plate incisura 7-1 away from bone plate and be connected with the inside on linking arm 9-2 away from bone plate gripper jaw 9-4, tighten inside It is fixed away from maintaining the two to coincide after bone plate jackscrew 9-5, manually by the inside insertion near end of thighbone 8-2 (stock on front side of its pile warp femur Bone away from), adjustment position is kept as far as possible close to sclerotin on the inside of near end of thighbone 8-2, then is about to aim at the outside bone plate on arm 9-1 The outside bone plate that gripper jaw 9-3 is clamped on the bone plate 1 of outside holds plate incisura 1-1, and after tightening outside bone plate jackscrew 9-5 It maintains the two to coincide to fix, then linking arm 9-2 is fixed on by bolt 9-6 and is aimed on arm 9-1, aim at cantilever crane to form entirety Structure.It selects bolt 9-6 to carry out linking arm 9-2 and aim at arm 9-1, and can gradually be adjusted by the linking arm 9-2 of row The spacing of two plates, finally suitably clamps near end of thighbone；Aim at the guide hole reserved of arm be successively inserted into protective case, drill bushing, Trochar, bone drill drill through opposite side sclerotin, and corresponding each auxiliary screw is screwed into after depth measurement.

Claims

1. a kind of intertrochanter fracture of femur combined splint inner fixing device, including outside bone plate, main lock screw, support spiral shell Nail, greater trochanter screw and distal end fixing screws, the outside bone plate below greater trochanter of femur and on the outside of near end of thighbone Cortex is close to, and a group far end fixing screw hole and one group of main lock hole being obliquely installed and support is distributed on the bone plate of outside Screw hole, the main lock screw, supporting screw, distal end fixing screws respectively with screw hole screw thread corresponding on the bone plate of outside Connection, the greater trochanter screw pass through greater trochanter of femur, it is characterised in that: further include inside away from bone plate (7), described is interior Side is close to away from bone plate (7) below femoral head (8-3) and with cortex on the inside of near end of thighbone (8-2), and inside is away from bone plate (7) There are the screw hole adaptable with supporting screw (5), distal end fixing screws (6) and greater trochanter screw (4), the greater trochanter screw (4), the front end of supporting screw (5) and distal end fixing screws (6) is threadedly coupled with inside away from bone plate (7), constitutes inside away from connecing Bone plate (7) and outside bone plate (1) are respectively placed in the clamp structure that near end of thighbone (8-2) is clamped inside and outside femur (8).

2. a kind of intertrochanter fracture of femur combined splint inner fixing device according to claim 1, it is characterised in that: also Locking hook plate (2) are rebuild including greater trochanter, the greater trochanter rebuilds locking hook plate (2) and is equipped with one group of screw hole, greater trochanter weight It is solid on greater trochanter (8-1) to build locking hook plate (2) covering, outside bone plate (1) upper end is equipped with groove (1-2), big to turn Son rebuild locking hook plate (2) lower end be embedded in outside bone plate (1) groove (1-2) in, greater trochanter screw (4) rear end with Greater trochanter is rebuild locking hook plate (2) and is threadedly coupled.

3. a kind of intertrochanter fracture of femur combined splint inner fixing device according to claim 2, it is characterised in that: institute State main lock screw (3) be two, the rear end of two main lock screws (3) in the same horizontal line, the greater trochanter screw (4) Between two main lock screws (3).

4. a kind of intertrochanter fracture of femur combined splint inner fixing device according to claim 3, it is characterised in that: institute The crosspoint of main lock screw (3) and the greater trochanter screw (4) is stated in the trigonum ward.

5. a kind of intertrochanter fracture of femur combined splint inner fixing device according to claim 3, it is characterised in that: institute The poly- heart biasing of the plane of symmetry of the front end for the main lock screw (3) stated towards two main lock screws (3).

6. a kind of intertrochanter fracture of femur combined splint inner fixing device according to claim 1, it is characterised in that: institute The inside stated is the titanium matter 3.5mm reconstruction Limited contact locking bone fracture plate for meeting bigelow's septum anatomic form away from bone plate (7).

7. a kind of intertrochanter fracture of femur combined splint inner fixing device a kind of and described in claim 1 is used cooperatively auxiliary Help aiming appliance, it is characterised in that: clamp away from bone plate including aiming at arm (9-1), outside bone plate gripper jaw (9-3), inside Pawl (9-4), linking arm (9-2), outside bone plate jackscrew (9-5) and inside are away from bone plate jackscrew, the outside bone plate splint It holds pawl (9-3) and is fixedly connected with arm (9-1) is aimed at, one end and inside of the linking arm (9-2) are away from bone plate gripper jaw (9- 4) it is fixedly connected, the other end of linking arm (9-2) is fixedly connected by bolt (9-6) with aiming arm (9-1), described outer to flank Bone plate gripper jaw (9-3) is corresponding away from the bone plate gripper jaw position (9-4) with inside, outside bone plate jackscrew (9-5) and aiming Arm (9-1) is threadedly coupled, and inside is threadedly coupled away from bone plate jackscrew with linking arm (9-2).

8. a kind of auxiliary sight tool according to claim 7, it is characterised in that: the outside bone plate jackscrew (9- 5) in the section that bone plate gripper jaw (9-3) is surrounded on the outside of front end, the inside exists away from the front end of bone plate jackscrew In the section that inside is surrounded away from bone plate gripper jaw (9-4).