CN209315983U

CN209315983U - A kind of posterior cruciate ligament tibia target device

Info

Publication number: CN209315983U
Application number: CN201822243443.XU
Authority: CN
Inventors: 贺业腾
Original assignee: Individual
Current assignee: First Affiliated Hospital of Shandong First Medical University
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2019-08-30
Anticipated expiration: 2028-12-28

Abstract

The utility model discloses a kind of posterior cruciate ligament tibia target devices, are related to posterior cruciate ligament reconstruction technical field of surgical instruments.Including positioning handle, handle, guide pipe, guide pin and hollow boring bit, positioning handle includes location hook, connection handle and regulating arm, location hook upper end and one end of connection handle connect, regulating arm upper end is connect with one end of the remotely located hook of connection handle, location hook is equipped with location hole, location hole is connected to the cavity of connection handle, positioning hole is equipped with protective plate, fixed plate is equipped in the cavity of connection handle, protective plate is connect by compressed spring with fixed plate, connection handle is equipped with close to one end of regulating arm and adjusts long hole, it adjusts and is equipped with adjusting block in long hole, protective plate is connect by connector with adjusting block.The utility model can avoid damage to the important blood vessels and nerve at knee rear during drilling through bone road, after avoiding hollow boring bit from getting into knee during drilling through bone road, reduce wound, shorten operating time, is easy to operate, reduce operation risk and difficulty.

Description

A kind of posterior cruciate ligament tibia target device

Technical field

The utility model relates to posterior cruciate ligament reconstruction technical field of surgical instruments, and in particular to a kind of posterior cruciate ligament of knee shin Bone sighting device.

Background technique

Posterior cruciate ligament of knee is a branch of tissue that femur is connected to shin bone in knee joint, after posterior cruciate ligament of knee is impaired, It needs to rebuild posterior cruciate ligament of knee.

In the prior art, impaired posterior cruciate ligament of knee is cleaned up first, and is established on femur and shin bone for moving self The bone road that plant passes through, during drilling through bone road, it is necessary first to guide pin is positioned using tibia sight, it then will be hollow Drill bit drills through bone road along the direction of guide pin, at the same time, needs to increase the approach of inside after knee to be placed in limiter, avoids boring After head gets into knee, damage is located at the important blood vessels at knee rear, nerve.

So there are the following problems for this process: when drilling through bone road with hollow boring bit, it is also necessary to which inside is open-minded after knee One open wound is placed in limiter, and wound is big, and the time is long, cumbersome, and if operation error during this, The important nerve and blood vessel at knee rear will be damaged, or even causes amputation, increases operation risk and difficulty.

Summary of the invention

The utility model In view of the above shortcomings of the prior art, proposes a kind of posterior cruciate ligament tibia target device, this Utility model, without opening knee rear accessory channel, can just be avoided that hollow boring bit is drilling through during drilling through bone road After getting into knee during bone road, the important blood vessels and nerve at knee rear are avoided damage to, reduces wound, shorten operating time, behaviour Make simply, to reduce operation risk and difficulty.

To achieve the goals above, the technical solution adopted in the utility model is:

A kind of posterior cruciate ligament tibia target device, including positioning handle, handle, guide pipe, guide pin and hollow boring bit, it is described fixed Position handle includes location hook, connection handle and regulating arm, and the upper end of location hook and one end of connection handle connect, and the lower end of location hook is width Bladed structure, regulating arm be using connection handle close to one end of location hook as the center of circle, connection handle be radius formed arc structure, adjust The upper end of joint arm is connect with one end of the remotely located hook of connection handle, and location hook is equipped with location hole, and connection handle is shell structure, positioning Hole is connected to the cavity of connection handle, and positioning hole is equipped with protective plate, is equipped with fixed plate in the cavity of connection handle, fixed plate with connect Handle connection, protective plate are connect by compressed spring with fixed plate, and connection handle is equipped with close to one end of regulating arm and adjusts long hole, are adjusted The length direction of long hole and the length direction of connection handle are parallel, adjust and are equipped with adjusting block in long hole, and adjusting block is matched with long hole is adjusted It closes, adjusting block is connect by connector with adjusting block along long hole sliding, protective plate is adjusted, and connector is set to the cavity of connection handle It is interior；

Handle is equipped with dovetail groove and pilot hole, and dovetail groove and regulating arm cooperate, and regulating arm is slided along dovetail groove, and handle passes through Fastener is connect with regulating arm, and pilot hole is set to the lower section of dovetail groove, and the axis of pilot hole is overlapped with the axis of location hole, is oriented to Perhaps hollow boring bit cooperation guide pipe or hollow boring bit and guide pin cooperate for hole and guide pipe.

Further, the location hole is bellmouth, and location hole is remote greater than location hole close to the aperture of one end of regulating arm The aperture of one end from regulating arm.

Further, the location hook is equipped with multiple pointed cones, circle of multiple pointed cones along location hole close to the side of regulating arm Circumferential direction is uniformly distributed, and the tip of pointed cone is towards regulating arm；

The front and rear sides of the handle are equipped with the fixed arm of tubular structure, and one end side wall of fixed arm is connect with handle, The fixing glue connecting with shin bone is equipped in the cavity of fixed arm, fixing glue and fixed arm cooperate, the axis and fixed arm of fixing glue Axis be overlapped.

Further, the middle part of the fixing glue is equipped with scale, and the middle part of guide pin is equipped with scale, the scale at the middle part of guide pin Corresponding with the scale at the middle part of fixing glue, the middle part of hollow boring bit is equipped with peep hole, the scale pair at the middle part of peep hole and guide pin It answers.

Further, further include position-limiting drum, position-limiting drum is set to one end of the remotely located hook of handle, the axis of position-limiting drum with lead Be overlapped to the axis in hole, the open at one end of position-limiting drum, the barrel edge of the open end of position-limiting drum is equipped with mounting groove, mounting groove with hold Cooperation, position-limiting drum is equipped with through-hole far from one end of open end, and through-hole and guide pin cooperate, and the end of guide pin is equipped with scale.

Further, the middle part of the hollow boring bit be equipped with long hole and multiple limiting slots, the length direction of long hole with it is hollow The axis of drill bit is parallel, and multiple limiting slots are uniformly distributed along the long side of long hole, and limiting slot is connected to long hole, and limit is equipped in limiting slot Position block, limited block and limiting slot cooperate, and extension spring is equipped in long hole, and extension spring is slided along long hole, one end of extension spring It is connect with limited block, extension spring is equipped with limit plate far from one end of limited block, and limit plate is connect with extension spring, and limit plate is set In in the cavity of hollow boring bit.

The utility model has the advantages that

1, the utility model can make protective plate block location hole by setting protective plate, make hollow boring bit along leading During needle drills through bone road, protective plate blocks hollow boring bit, to the important blood at knee rear after avoiding hollow boring bit from getting into knee Pipe and nerve cause to damage, so can be during drilling through bone road, without using limiter, also just without opening knee rear Accessory channel is placed in limiter, reduces wound, shortens operating time, is easy to operate, reduces the risk and difficulty of operation.

In addition, adjusting block can be pulled by setting fixed plate, compressed spring, connector and adjusting block, keep adjusting block logical Pulling connector is crossed to drive protective plate, enters protective plate in the cavity of connection handle, thus keep location hole in the open state, Convenient for introducing the steel wire that carry autograft, autograft is passed through into bone road, it is easy to use, intersect after shortening entirely tough Operating time with reconstruction operations, improves procedure efficiency；And when needing to block location hole, it is only necessary to unclamp adjusting block, prevent Backplate is fixed on positioning hole under the extruding of compressed spring, blocks location hole, realizes the flexible control being opened and closed to location hole, this Utility model uses more convenient flexible.

2, multiple pointed cones are uniformly arranged by the circumferencial direction along location hole, point can be made when location hook resists shin bone Cone nail improves fixed effect of the location hook on shin bone on shin bone；Tubular structure is respectively provided with by the front and rear sides in handle Fixed arm and fixing glue for being connect with shin bone, fixed arm can be made to support fixing glue, and fixing glue is then fixed and held , prevent handle from shaking, it is relatively reliable compared with the case where needing doctor to fix handle with hand in the prior art, reduce doctor Raw spent energy during fixing handle with hand, improves the operation precision of posterior cruciate ligament reconstruction operation；Pointed cone With being used cooperatively for fixed arm and fixing glue, fixed effect of the whole device on shin bone is improved, the steady of whole device is improved It is qualitative.

3, by being equipped with scale at the middle part of fixing glue, the middle part of guide pin is equipped with scale, and the middle part of hollow boring bit, which is equipped with, to be seen Hole is examined, can be during hollow boring bit drill through bone road along guide pin, medical staff can see out of hollow boring bit peep hole The scale at the middle part of guide pin is observed, so as to the scale at the middle part of guide pin is corresponding with the scale at the middle part of fixing glue, makes to cure Shield personnel know whether guide pin during hollow boring bit drills through bone road occurs play, consequently facilitating medical staff adjusts in time The position of guide pin.

4, by the way that position-limiting drum is arranged in one end of the remotely located hook of handle, and it is equipped with scale in the end of guide pin, it can be pre- The length in bone road is first measured, convenient for holding the length of hollow boring bit drilling shin bone, improves the operation of posterior cruciate ligament reconstruction operation Precision.

5, by the way that long hole and multiple limiting slots and limited block, extension spring and limit is arranged at the middle part of hollow boring bit Plate can adjust position of the limited block on hollow boring bit, drill through hollow boring bit after the length in measurement bone road in advance During bone road, after hollow boring bit gets into certain depth, limited block is kept off outside tibial bone road, stops hollow boring bit at this time Continue to bore and move, makes the advance of limited block limitation hollow boring bit, realize the mechanical restriction for piercing depth to hollow boring bit；Can with It on the basis of protective plate protection, realizes that second protects again, avoids hollow boring bit from drilling through protective plate after entrance knee, cause to after knee The damage of square important blood vessels and nerve.

In addition, one end of extension spring is connect with limited block, extension spring is connect far from one end of limited block with limit plate, It can make limited block and limit the side wall of board clamping hollow boring bit, prevent during hollow boring bit bores dynamic, limited block is from length It is fallen in hole, limited block is enable to be more solidly fixed on hollow boring bit.

Detailed description of the invention

Attached drawing 1 is the structural schematic diagram of positioning handle；

Attached drawing 2 is the schematic diagram of the section structure of positioning handle；

Attached drawing 3 is the partial enlarged view at Fig. 2A；

Attached drawing 4 is the main view for being equipped with a kind of posterior cruciate ligament tibia target device of guide pipe and guide pin；

Attached drawing 5 is the rearview for being equipped with a kind of posterior cruciate ligament tibia target device of guide pipe and guide pin；

Attached drawing 6 is the structural schematic diagram of position-limiting drum；

Attached drawing 7 is a kind of use state diagram one of posterior cruciate ligament tibia target device；

Attached drawing 8 is a kind of use state diagram two of posterior cruciate ligament tibia target device；

Attached drawing 9 is the partial enlarged view at Fig. 8 B.

Description of symbols: 1- connection handle, 2- location hook, 3- regulating arm, 4- location hole, 5- protective plate, 6- compressed spring, 7- fixed plate, 8- connector, 9- pilot hole, 10- pointed cone, 11- adjusting long hole, 12- adjusting block, 13- handle, 14- dovetail groove, 15- guide pipe, 16- guide pin, 17- fastener, 18- fixed arm, 19- position-limiting drum, 20- motor, 21- shin bone, 22- fixing glue, 23- Hollow boring bit, 24- long hole, 25- limiting slot, 26- limited block, 27- mounting groove, 28- peep hole.

It is worth noting that, term " center ", "upper", "lower", "left", "right", " perpendicular in the description of the present invention, Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Specific embodiment

The utility model in order to better understand is with reference to the accompanying drawing further elaborated the utility model.

Embodiment:

A kind of posterior cruciate ligament tibia target device, including positioning handle, handle 13, guide pipe 15, guide pin 16 and hollow boring bit 23；

As shown in Figure 1-3, positioning handle includes location hook 2, connection handle 1 and regulating arm 3, upper end and the connection handle 1 of location hook 2 One end connection, the lower end of location hook 2 is wide bladed structure, and wide bladed structure is convenient for pushing the tissue around shin bone 21 aside, be adjusted Arm 3 be using connection handle 1 close to one end of location hook 2 as the center of circle, connection handle 2 be radius formed arc structure, regulating arm 3 it is upper End is connect with one end of the remotely located hook 2 of connection handle 1, and location hook 2, connection handle 1 and regulating arm 3 are integrally formed；

Location hook 2 is equipped with location hole 4, and connection handle 1 is shell structure, and location hole 4 is connected to the cavity of connection handle 1, positions It is equipped with protective plate 5 in hole 4, is equipped with fixed plate 7 in the cavity of connection handle 1, fixed plate 7 is welded and fixed with connection handle 1, fixed plate 7 Middle part be equipped with connecting hole, protective plate 5 connect by compressed spring 6 with fixed plate 7, one end of compressed spring 6 and the weldering of fixed plate 7 Fixation is connect, one end and the protective plate 5 of the separate fixed plate 7 of compressed spring 6 are welded and fixed, and connection handle 1 is close to one end of regulating arm 3 Equipped with long hole 11 is adjusted, the length direction for adjusting long hole 11 is parallel with the length direction of connection handle 1, adjusts to be equipped in long hole 11 and adjust Locking nub 12, adjusting block 12 and adjusting long hole 11 cooperate, and adjusting block 12 is slided along long hole 11 is adjusted, specific: adjusting block 12 is erecting Histogram to cross sectional shape be I-shaped, the middle part of adjusting block 12 is being adjusted in long hole 11 along the length side for adjusting long hole 11 To sliding, the upper and lower part of adjusting block 12 can be stuck in the top and bottom for adjusting long hole 11, can prevent from adjusting in this way Block 12 is fallen from adjusting long hole 11；Protective plate 5 is connect by connector 8 with adjusting block 12, specific: connector 8 uses iron Silk or steel wire, connector 8 are set in the cavity of connection handle 1, and one end and the adjusting block 12 of connector 8 are welded and fixed, connector 8 The connecting hole that one end far from adjusting block 12 passes through fixed plate 7 is welded and fixed with protective plate 5；

As illustrated in figures 4-5, handle 13 is equipped with dovetail groove 14 and pilot hole 9, and dovetail groove 13 and regulating arm 3 cooperate, regulating arm 3 It is slided along dovetail groove 14, handle 13 is connect by fastener 17 with regulating arm 3, and specific: fastener 17 uses bolt；Pilot hole 9 are set to the lower section of dovetail groove 13, and the axis of pilot hole 9 is overlapped with the axis of location hole 4, pilot hole 9 and guide pipe 15 or sky Heart drill bit 23 cooperates, and guide pipe 15 or hollow boring bit 23 and guide pin 16 cooperate.

Further, as shown in figure 3, location hole 4 is bellmouth, location hole 4 is greater than close to the aperture of one end of regulating arm 3 The aperture of the one end of location hole 4 far from regulating arm 3.

Further, as shown in Figure 1, the location hook 2 is set close to the side of regulating arm 3, there are four pointed cone 10, four points Cone 10 is uniformly distributed along the circumferencial direction of location hole 4, and the tip of pointed cone 10 is towards regulating arm 3；

As illustrated in figures 4-5, the front and rear sides of handle 13 are equipped with the fixed arm 18 of tubular structure, the one end of fixed arm 18 Wall is welded and fixed with handle 13, and the fixing glue 22 connecting with shin bone 21 is equipped in the cavity of fixed arm 18, as shown in figure 8, fixed Nail 22 cooperates with fixed arm 18, and the axis of fixing glue 22 is overlapped with the axis of fixed arm 18.When use: fixing glue 22 being passed through solid Fixed arm 18, and fixing glue 22 is followed closely into 21 certain depth of shin bone.

Further, as shown in figure 8, the middle part of fixing glue 22 is equipped with scale, the middle part of guide pin 16 is equipped with scale, guide pin 16 Middle part scale it is corresponding with the scale at the middle part of fixing glue 22, the middle part of hollow boring bit 23 is equipped with peep hole 28, peep hole 28 It is corresponding with the scale at the middle part of guide pin 16.

It further, as shown in fig. 6-7, further include position-limiting drum 19, position-limiting drum 19 is set to the one of the remotely located hook 2 of handle 13 End, the axis of position-limiting drum 19 are overlapped with the axis of pilot hole 9, the open at one end of position-limiting drum 19, the cylinder of the open end of position-limiting drum 19 Wall edge is equipped with mounting groove 27, and mounting groove 27 and handle 13 cooperate, and position-limiting drum 19 is equipped with through-hole, through-hole far from one end of open end Cooperate with guide pin 16, the end of guide pin 16 is equipped with scale.

Further, as Figure 8-9, the middle part of hollow boring bit 23 is equipped with long hole 24 and multiple limiting slots 25, long hole 24 Length direction it is parallel with the axis of hollow boring bit 23, multiple limiting slots 25 are uniformly distributed along the long side of long hole 24, limiting slot 25 It is connected to long hole 24, limited block 26 is equipped in limiting slot 25, limited block 26 and limiting slot 25 cooperate, be equipped in long hole 24 and stretch bullet Spring, extension spring are slided along long hole 24, and one end of extension spring 24 is connect with limited block 26, and extension spring is far from limited block 26 One end is equipped with limit plate, and limit plate is connect with extension spring, and limit plate is set in the cavity of hollow boring bit 23.

Specifically, as shown in figure 4, the length S of location hook 2 is 2.5-2.7cm, this is because the position of ligament stop is in shin 2.5-2.7cm under 21 posterior condylar face of bone can be convenient for positioning so the length S of location hook 2 is set as 2.5-2.7cm Hook 2 navigates to the position of ligament stop, consequently facilitating the terminal location in positioning bone road, improves operation precision.The aperture of pilot hole 9 Preferably 9-10mm can be suitable for the size of hollow boring bit 23.Regulating arm 3 is equipped with scale.

When use:

(1) as shown in fig. 7, guide pipe 15 is inserted into the pilot hole 9 of handle 13, and guide pin 16 is not provided with the one of scale In end insertion guide pipe 15, the mounting groove 27 of position-limiting drum 19 is cooperated with handle 13, guide pin 16 sets graduated one end and motor 20 connections, one end of the location hook 2 of the present apparatus and the close location hook 2 of connection handle 1 is inserted between shin bone 21 and femur, makes this The location hook 2 of device is positioned at the position of the ligament stop of shin bone 21, and one end that guide pin 16 is not provided with scale is against shin bone 21 On surface, and fixing glue 22 is followed closely into 21 certain depth of shin bone, at this point, length of the guide pin 16 between position-limiting drum 19 and motor 20 L is exactly the length for needing the bone road drilled through.

(2) as Figure 8-9, limited block 26 is determined according to the length in bone road according to the length in step (1) bone road Position reserves the position of the length of drilling shin bone 21 in hollow boring bit 23, position-limiting drum 19 and guide pipe 15 is removed, by hollow boring bit 23 are inserted into pilot hole 9 along guide pin 16, and one end of hollow boring bit 23 is connect with motor 20, start motor 20,23 edge of hollow boring bit Guide pin 16 bone road is drilled through on shin bone 21, when limited block 26 is against on shin bone 21, but hollow boring bit 23 not yet drills through bone road When, extension spring is slided, keeps limited block 26 mobile away from the direction of shin bone 21, when limited block 26 is moved to suitable position When, limited block 26 is caught in limiting slot 25, continues to start motor 20, hollow boring bit 23, which continues to bore, to be moved, until bone road is drilled through.

(3) hollow boring bit 23, fixing glue 22 and guide pin 16 are removed, one end is inserted into bone road and is connected to autograft Steel wire, at this point, making adjusting block 12 by pulling connector 8, by protective plate 5 towards one end slidable adjustment block 12 of remotely located hook 2 It draws in the cavity of connection handle 1, keeps location hole 4 in the open state, steel wire pierces into location hole 4, and it is upward that doctor holds handle 13 It is mobile, bend the steel wire across location hole 4, then medical staff takes out positioning handle, and since steel wire is bent, steel wire can be with Positioning handle passed through from 21 articular surface of shin bone, steel wire just with autograft pass through bone road.

Claims

1. a kind of posterior cruciate ligament tibia target device, which is characterized in that including positioning handle, handle, guide pipe, guide pin and core drill Head, the positioning handle include location hook, connection handle and regulating arm, and the upper end of location hook and one end of connection handle connect, location hook Lower end be wide bladed structure, it close to one end of location hook is what radius was formed as the center of circle, connection handle that regulating arm, which is using connection handle, The upper end of arc structure, regulating arm is connect with one end of the remotely located hook of connection handle, and location hook is equipped with location hole, and connection handle is shell Body structure, location hole are connected to the cavity of connection handle, and positioning hole is equipped with protective plate, are equipped with fixed plate in the cavity of connection handle, Fixed plate is connect with connection handle, and protective plate is connect by compressed spring with fixed plate, and connection handle is equipped with close to one end of regulating arm Long hole is adjusted, the length direction for adjusting long hole is parallel with the length direction of connection handle, adjusts and is equipped with adjusting block, adjusting block in long hole Cooperate with long hole is adjusted, adjusting block edge adjusts long hole sliding, and protective plate is connect by connector with adjusting block, and connector is set on company It connects in the cavity of handle；

Handle is equipped with dovetail groove and pilot hole, and dovetail groove and regulating arm cooperate, and regulating arm is slided along dovetail groove, and handle passes through fastening Part is connect with regulating arm, and pilot hole is set to the lower section of dovetail groove, and the axis of pilot hole is overlapped with the axis of location hole, pilot hole and Perhaps hollow boring bit cooperation guide pipe or hollow boring bit and guide pin cooperate guide pipe.

2. a kind of posterior cruciate ligament tibia target device according to claim 1, which is characterized in that the location hole is taper Hole, location hole are greater than the aperture of the one end of location hole far from regulating arm close to the aperture of one end of regulating arm.

3. a kind of posterior cruciate ligament tibia target device according to claim 2, which is characterized in that the location hook is close to tune The side of joint arm is equipped with multiple pointed cones, and multiple pointed cones are uniformly distributed along the circumferencial direction of location hole, and the tip direction of pointed cone is adjusted Arm；

The front and rear sides of the handle are equipped with the fixed arm of tubular structure, and one end side wall of fixed arm is connect with handle, fixed The fixing glue connecting with shin bone is equipped in the cavity of arm, fixing glue and fixed arm cooperate, the axis of fixing glue and the axis of fixed arm Line is overlapped.

4. a kind of posterior cruciate ligament tibia target device according to claim 3, which is characterized in that the middle part of the fixing glue Equipped with scale, the middle part of guide pin is equipped with scale, and the scale at middle part of scale and fixing glue at the middle part of guide pin is corresponding, hollow boring bit Middle part be equipped with peep hole, peep hole is corresponding with the scale at the middle part of guide pin.

5. a kind of posterior cruciate ligament tibia target device according to claim 4, which is characterized in that it further include position-limiting drum, limit Position cylinder is set to one end of the remotely located hook of handle, and the axis of position-limiting drum is overlapped with the axis of pilot hole, the open at one end of position-limiting drum, The barrel edge of the open end of position-limiting drum is equipped with mounting groove, and mounting groove and handle cooperate, and position-limiting drum is set far from one end of open end There is through-hole, through-hole and guide pin cooperate, and the end of guide pin is equipped with scale.

6. a kind of posterior cruciate ligament tibia target device according to claim 5, which is characterized in that in the hollow boring bit Portion is equipped with long hole and multiple limiting slots, and the length direction of long hole and the axis of hollow boring bit are parallel, and multiple limiting slots are along long hole Long side is uniformly distributed, and limiting slot is connected to long hole, and limited block is equipped in limiting slot, and limited block and limiting slot cooperate, set in long hole There is extension spring, extension spring is slided along long hole, and one end of extension spring is connect with limited block, and extension spring is far from limited block One end is equipped with limit plate, and limit plate is connect with extension spring, and limit plate is set in the cavity of hollow boring bit.