CN108354650B - A posterior cruciate ligament protection device - Google Patents

Abstract

The invention discloses a posterior cruciate ligament protection device which comprises a bone pry, a bone knife and a screw, wherein the bone pry comprises a handle, an auxiliary prying plate and a prying head, the handle, the auxiliary prying plate and the prying head are integrally formed, the handle is flat, one end of the handle is connected with the auxiliary prying plate, the auxiliary prying plate is of a flat arc structure and is matched with a femoral pulley groove, one end, far away from the handle, of the auxiliary prying plate is connected with the prying head, one end, close to the auxiliary prying plate, of the handle is also provided with a hole groove and a blocking platform, and the hole groove penetrates through the handle and the blocking platform; the osteotome handle is provided with a slot; the screw penetrates through the slotted bone knife and then penetrates out of the hole groove on the bone pry handle, and the bone knife is in threaded connection with the bone pry. The posterior cruciate ligament protection device is simple in structure, convenient to use and low in manufacturing cost, greatly shortens operation time and improves operation success rate.

Description

Translated fromChinese

一种后交叉韧带保护装置A posterior cruciate ligament protection device

技术领域technical field

本发明涉及技术领域，具体涉及一种后交叉韧带保护装置。The invention relates to the technical field, in particular to a posterior cruciate ligament protection device.

背景技术Background technique

随着社会老龄化的增加，罹患膝关节退变性疾病的中老年人数量逐年递增。我国罹患骨关节病的患者人数多达6500万，30岁以上人群的患病率为10％～17％，65岁以上人群为60％，75岁以上人群为80％，其中致残率高达53％。全膝关节置换术是治疗中晚期严重膝关节退变性骨关节炎的主要手段，可以有效缓解膝关节疼痛，重建关节功能和活动度，得到了广泛的临床应用，而在手术时后交叉韧带的完整保留对于膝关节的稳定性及术后膝关节本体感觉的恢复和行走步态起着至关重要的作用。With the increase of social aging, the number of middle-aged and elderly people suffering from knee degenerative diseases is increasing year by year. The number of patients with osteoarthritis in my country is as high as 65 million. The prevalence rate of people over 30 years old is 10% to 17%, 60% of people over 65 years old, and 80% of people over 75 years old. Among them, the disability rate is as high as 53%. %. Total knee arthroplasty is the main method for the treatment of severe knee degenerative osteoarthritis in the middle and late stages. It can effectively relieve knee pain, rebuild joint function and range of motion, and has been widely used in clinical practice. Intact preservation plays a crucial role in the stability of the knee joint and the recovery of knee joint proprioception and walking gait after surgery.

后交叉韧带是膝关节腔内非常重要的前后向和旋转稳定结构。后交叉韧带股骨的附着区位于股骨内髁的外侧面骨质，形状为半环形，宽度为19～21mm，向下后方向走行，止于胫骨内外髁关节面的后部骨质，呈不规则的四边形，内外侧宽度为10～12mm，并向后延伸到胫骨平台的下方约1cm处，其前方紧邻内外侧半月板后角的止点处。后交叉韧带具有限制胫骨后移、膝关节后伸、旋转和膝关节侧方活动的生理功能。The posterior cruciate ligament is a very important anterior and posterior stabilizing structure in the knee joint cavity. The attachment area of the posterior cruciate ligament to the femur is located on the lateral surface of the medial condyle of the femur, with a semi-circular shape and a width of 19-21 mm. It runs in the downward and posterior direction and inserts into the posterior bone of the articular surface of the medial and medial condyle of the tibia. It is irregular It is a quadrilateral with a medial and lateral width of 10-12 mm, and extends posteriorly to about 1 cm below the tibial plateau, and its front is close to the insertion point of the posterior angle of the medial and lateral meniscus. The posterior cruciate ligament has the physiological functions of restricting the posterior movement of the tibia, extension of the knee joint, rotation and lateral movement of the knee joint.

在现有的保留后交叉韧带型人工全膝关节置换手术中，由于没有专用的手术器械或装置保护后交叉韧带，只能通过目测或使用长钢钉来确定后交叉韧带下止点骨块的位置和大小，不仅费时费力，而且后交叉韧带保护效果欠佳。在用电动摆锯片进行胫骨平台截骨时，极易发生后交叉韧带胫骨侧下止点骨块部分撕脱或完全撕脱，引起后交叉韧带松弛，进而影响术后疗效和膝关节假体使用寿命，导致手术失败。In the existing total knee arthroplasty with preservation of the posterior cruciate ligament, since there is no special surgical instrument or device to protect the posterior cruciate ligament, the size of the inferior insertion point of the posterior cruciate ligament can only be determined by visual inspection or long steel nails. Position and size, not only time-consuming and laborious, but also poor protection of the posterior cruciate ligament. When the tibial plateau osteotomy is performed with an electric oscillating saw blade, it is very easy to cause partial avulsion or complete avulsion of the posterior cruciate ligament at the lower insertion point on the tibial side, causing the posterior cruciate ligament to relax, thereby affecting the postoperative curative effect and the knee joint prosthesis. service life, resulting in surgical failure.

因此，提供一种后交叉韧带保护装置，以避免手术过程中对后交叉韧带的误切割，是目前本领域技术人员急需解决的问题。Therefore, it is an urgent problem for those skilled in the art to provide a posterior cruciate ligament protection device to avoid miscutting the posterior cruciate ligament during surgery.

发明内容SUMMARY OF THE INVENTION

本发明的目的在于提供一种后交叉韧带保护装置，用于全膝关节置换术。The purpose of the present invention is to provide a posterior cruciate ligament protection device for total knee arthroplasty.

为实现上述目的，本发明采取以下技术方案：一种后交叉韧带保护装置，包括骨撬、骨刀和螺钉，In order to achieve the above object, the present invention adopts the following technical solutions: a posterior cruciate ligament protection device, comprising a bone pry, a bone knife and a screw,

所述骨撬包括手柄、辅助撬板和撬头，所述手柄、辅助撬板和撬头一体成型，所述手柄为扁平状，所述手柄的一端连接辅助撬板，所述辅助撬板为扁平弧形结构，与股骨滑车沟相匹配，在所述辅助撬板远离所述手柄的一端连接撬头，所述撬头由两侧臂组成，所述两侧臂之间形成U形开口，在所述手柄靠近所述辅助撬板的一端所述手柄上还设有孔槽和挡台，所述孔槽贯通所述手柄和挡台，所述孔槽孔壁上设有螺纹；The bone pry includes a handle, an auxiliary prying board and a prying head, the handle, the auxiliary prying board and the prying head are integrally formed, the handle is flat, and one end of the handle is connected to the auxiliary prying board, and the auxiliary prying board is The flat arc structure is matched with the trochlear groove of the femur, and a pry head is connected to the end of the auxiliary pry plate away from the handle. The pry head is composed of two arms, and a U-shaped opening is formed between the two arms. The handle is also provided with a hole groove and a stop on one end of the handle close to the auxiliary skid plate, the hole groove penetrates the handle and the stop, and the hole wall of the hole groove is provided with a thread;

所述骨刀包括一刀柄，刀柄为扁平状，刀柄的一端一体连接一刀头，所述刀柄上设置有一个开槽；The bone knife includes a handle, the handle is flat, one end of the handle is integrally connected with a cutter head, and a slot is arranged on the handle;

所述螺钉包括钉头和钉杆，所述钉头包括两个对称设置的旋耳，所述钉杆上设有螺纹。The screw includes a nail head and a nail shaft, the nail head includes two symmetrically arranged screw ears, and the nail shaft is provided with a thread.

所述螺钉从骨刀的开槽中穿入，再从骨撬手柄上的孔槽中穿出，将所述骨刀与骨撬螺接。The screw is inserted into the slot of the bone knife, and then passed out of the hole slot on the handle of the bone prying knife, and the bone knife is screwed with the bone prying knife.

所述两个侧臂的端部设置为V形，可以增强骨撬的把持力。The ends of the two side arms are arranged in a V shape, which can enhance the holding force of the bone pry.

为了避免压迫或损坏后交叉韧带，所述U形开口的高度为20-40mm。In order to avoid compressing or damaging the posterior cruciate ligament, the height of the U-shaped opening is 20-40mm.

所述骨刀位于开槽两侧的刀柄上设置有刻度线，可以准确读取骨刀插入骨的深度，避免人的目测造成的误差。The knife handle on both sides of the slot is provided with scale lines, which can accurately read the depth of the bone knife inserted into the bone and avoid errors caused by human visual inspection.

所述骨撬手柄上设有标记线，所述标记线与骨刀开槽两侧刀柄上刻度线配合，便于读取骨刀上的刻度。The bone pry handle is provided with a marking line, and the marking line cooperates with the scale lines on the knife handle on both sides of the slot of the bone knife, so that the scale on the bone knife is easy to read.

所述骨刀刀头相对于刀柄平面翘起一定高度，所述翘起的高度为0-20mm。The head of the bone knife is tilted to a certain height relative to the plane of the handle, and the tilted height is 0-20 mm.

所述骨刀刀头为直型刀头或U型刀头，根据手术需要选择不同刀头。The bone cutter head is a straight cutter head or a U-shaped cutter head, and different cutter heads are selected according to the needs of the operation.

为了手术操作方便，节省人力，所述骨撬手柄远离辅助撬板的一端上还设有挂环。In order to facilitate the operation and save manpower, a hanging ring is also provided on one end of the bone pry handle away from the auxiliary pry plate.

所述骨撬和骨刀均采用不锈钢材料制成。Both the bone pry and the bone knife are made of stainless steel.

有益效果beneficial effect

1、本发明后交叉韧带保护装置的骨撬撬头两个侧臂之间的U形开口具有更合适的高度，在手术过程中可以避免对后交叉韧带的伤害，两个侧臂的臂宽窄，可以增强骨撬的把持度，能更好的把持住胫骨平台，辅助撬板内表面的弧形与股骨滑车沟骨形相匹配，从而能更好的将股骨向前推出，便于截骨。1. The U-shaped opening between the two side arms of the bone pry head of the posterior cruciate ligament protection device of the present invention has a more suitable height, which can avoid damage to the posterior cruciate ligament during the operation, and the width of the two side arms is narrow. , which can enhance the holding degree of the bone pry, and can better hold the tibial platform. The arc shape of the inner surface of the auxiliary pry plate matches the shape of the trochlear groove of the femur, so that the femur can be better pushed forward, which is convenient for osteotomy.

2、本发明后交叉韧带保护装置将骨撬和骨刀组配，可以减少手术人数，节约人力。2. The posterior cruciate ligament protection device of the present invention is assembled with a bone lever and a bone knife, which can reduce the number of operations and save manpower.

3、本发明后交叉韧带保护装置设置有限位凸起和刻度，可以有效防止骨刀插入太深造成的后交叉韧带胫骨侧下止点撕脱骨折，并能准确判断骨刀插入位置。3. The posterior cruciate ligament protection device of the present invention is provided with limited protrusions and scales, which can effectively prevent the avulsion and fracture of the lower insertion point of the posterior cruciate ligament tibial side caused by too deep insertion of the osteotome, and can accurately determine the insertion position of the osteotome.

4、本发明后交叉韧带保护装置结构简单，使用方便并且制造成本低，极大地缩短了手术时间，提高了手术成功率。4. The posterior cruciate ligament protection device of the present invention has the advantages of simple structure, convenient use and low manufacturing cost, which greatly shortens the operation time and improves the success rate of the operation.

附图说明Description of drawings

图1本发明后交叉韧带保护装置整体结构示意图；1 is a schematic diagram of the overall structure of the posterior cruciate ligament protection device of the present invention;

图2本发明后交叉韧带保护装置骨撬不同角度的等轴测视图；Fig. 2 isometric views of different angles of the posterior cruciate ligament protection device of the present invention;

图3本发明后交叉韧带保护装置骨撬前视图；Figure 3 is a front view of the bone prying device of the posterior cruciate ligament protection device of the present invention;

图4本发明后交叉韧带保护装置骨撬后视图；Figure 4 is a rear view of the posterior cruciate ligament protection device of the present invention bone prying;

图5本发明后交叉韧带保护装置骨刀结构示意图；5 is a schematic structural diagram of the bone knife of the posterior cruciate ligament protection device of the present invention;

图6本发明后交叉韧带保护装置螺钉结构示意图；6 is a schematic diagram of the screw structure of the posterior cruciate ligament protection device of the present invention;

图7本发明后交叉韧带保护装置局部结构示意图；7 is a schematic diagram of the partial structure of the posterior cruciate ligament protection device of the present invention;

图8本发明另一优选实施例骨刀等轴测视图；Figure 8 isometric view of another preferred embodiment of the bone knife of the present invention;

图9本发明另一优选实施例骨刀左视图；Figure 9 is a left side view of another preferred embodiment of the osteotome of the present invention;

图中附图标记如下：The reference numbers in the figure are as follows:

骨撬1，骨刀2，螺钉3，手柄11，辅助撬板12，撬头13，孔槽14，挡台15，侧臂131，U形开口132，挂环111，标记线112，刀柄21，刀头22，开槽23，钉头31，钉杆32，旋耳311。Bone Pry 1, Bone Knife 2,Screw 3,Handle 11, Auxiliary PryPlate 12, Pry Head 13, HoleSlot 14,Block 15,Side Arm 131, U-shapedOpening 132, Hanging Ring 111, Marking Line 112, Knife Handle 21,cutter head 22,slot 23,nail head 31,nail shank 32,swivel lug 311.

具体实施方式Detailed ways

以下实施例用于说明本发明，但不用来限制本发明的范围。若未特别指明，实施例中所用的技术手段为本领域技术人员所熟知的常规手段。下面结合附图和实施例对本发明进行详细的描述。The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

如图1所示，本发明包括一骨撬1、与骨撬组配使用的骨刀2和螺钉3，As shown in FIG. 1, the present invention includes abone pry 1, abone knife 2 and ascrew 3 used in combination with the bone pry,

如图2-图4所示，所述骨撬1包括手柄11、辅助撬板12和撬头13，所述手柄11、辅助撬板12和撬头13一体成型，所述手柄11为扁平状，所述手柄11的一端连接辅助撬板12，所述辅助撬板12为扁平弧形结构，与股骨滑车沟相匹配，在所述辅助撬板12远离所述手柄11的一端连接撬头13，如图3和图4所示，所述撬头13由两侧臂131组成，所述两侧臂131之间形成U形开口132，U形开口132的高度为20-40mm，两个侧臂131的臂宽为10mm，在所述手柄11靠近所述辅助撬板12的一端所述手柄11上还设有孔槽14和挡台15，所述孔槽14贯通所述手柄11和挡台15，所述孔槽孔壁上设有螺纹；As shown in Figures 2-4, thebone pry 1 includes ahandle 11, anauxiliary prying board 12 and a pryinghead 13, thehandle 11, theauxiliary prying board 12 and the pryinghead 13 are integrally formed, and thehandle 11 is flat. , one end of thehandle 11 is connected to the auxiliary pryingboard 12, theauxiliary prying board 12 is a flat arc structure, matching with the femoral pulley groove, and the end of the auxiliary pryingboard 12 away from thehandle 11 is connected to thepry head 13 3 and 4, thepry head 13 is composed ofarms 131 on both sides, aU-shaped opening 132 is formed between thearms 131 on both sides, the height of theU-shaped opening 132 is 20-40mm, and the two sides The arm width of thearm 131 is 10mm. Thehandle 11 is also provided with ahole slot 14 and astop 15 at one end of thehandle 11 close to theauxiliary skid plate 12 , and thehole slot 14 penetrates thehandle 11 and the stopper.Platform 15, the hole wall of the hole slot is provided with a thread;

如图5所示，所述骨刀2包括一刀柄21，刀柄21为扁平状，刀柄21的一端一体连接一刀头22，所述刀柄21上设置有一个开槽23，所述骨刀2位于开槽23两侧的刀柄21上设置有刻度线，从刻度线上可以直接读取骨刀插入骨的深度。As shown in FIG. 5, thebone knife 2 includes ahandle 21, thehandle 21 is flat, and one end of thehandle 21 is integrally connected with acutter head 22, thehandle 21 is provided with aslot 23, the bone The knife handle 21 located on both sides of theslot 23 is provided with a scale line, and the depth of the bone knife inserted into the bone can be directly read from the scale line.

如图6所示，所述螺钉3包括钉头31、钉杆32，所述钉头31包括两个对称设置的旋耳311，所述钉杆32上设有螺纹。As shown in FIG. 6 , thescrew 3 includes ascrew head 31 and ascrew rod 32 , thescrew head 31 includes two symmetrically arrangedrotating ears 311 , and thescrew rod 32 is provided with threads.

所述螺钉3从骨刀2的开槽23中穿入，再从骨撬手柄11上的孔槽13中穿出，将所述骨刀2与骨撬1螺接，如图1。Thescrew 3 is inserted into theslot 23 of thebone knife 2, and then passed out of thehole groove 13 on thebone lever handle 11, and thebone knife 2 is screwed with thebone lever 1, as shown in FIG. 1 .

上述实施例中，骨撬1两个侧臂131的端部为V形，可以增强骨撬1的把持力，防止手术中骨撬与骨的脱离。In the above embodiment, the ends of the twoside arms 131 of thebone lever 1 are V-shaped, which can enhance the holding force of thebone lever 1 and prevent the bone lever from detaching from the bone during surgery.

上述实施例中，如图7，骨撬1的手柄11上设有标记线112，标记线112可以辅助读取骨刀2插入骨的深度，当骨刀2准备插入骨时，所述骨撬手柄11上的标记线与骨刀2上的0刻度线正好对准，随后骨刀2向下插入骨中，骨刀插入骨的深度即为标记线所对的刻度线的读数。In the above-mentioned embodiment, as shown in FIG. 7 , thehandle 11 of thebone lever 1 is provided with a markingline 112. The markingline 112 can assist in reading the depth of thebone knife 2 inserted into the bone. When thebone knife 2 is ready to be inserted into the bone, the bone lever is The marking line on thehandle 11 is exactly aligned with the 0 scale line on theosteotome 2, and then theosteotome 2 is inserted downward into the bone, and the depth of the osteotome inserted into the bone is the reading of the scale line corresponding to the marking line.

上述实施例中，如图8和图9所示，所述骨刀2刀头22相对于刀柄21平面翘起一定高度a，如图9，所述翘起的高度为a，a为0-20mm。In the above embodiment, as shown in FIGS. 8 and 9 , thehead 22 of thebone knife 2 is lifted by a certain height a relative to the plane of thehandle 21 , as shown in FIG. 9 , the height of the lift is a, and a is 0. -20mm.

上述实施例中，骨刀2刀头22为直型刀头或U型刀头。In the above embodiment, thecutter head 22 of thebone knife 2 is a straight cutter head or a U-shaped cutter head.

上述实施例中，在手柄11远离辅助撬板12的一端上还设有挂环111，如图2所示。In the above embodiment, a hangingring 111 is further provided on the end of thehandle 11 away from theauxiliary skid plate 12 , as shown in FIG. 2 .

上述实施例中，骨撬1和骨刀2均采用不锈钢材料制成。In the above-mentioned embodiment, thebone lever 1 and thebone knife 2 are both made of stainless steel.

本发明后交叉韧带保护装置用于全膝关节置换术，在使用时首先使用骨撬1的辅助撬板12包裹在股骨的滑车沟和后交叉韧带前方，将撬头13的两侧臂131把持住胫骨平台并将后交叉韧带置于U形开口132处予以保护，然后手握持手柄1向后用力，进而带动辅助撬板12将胫骨平台相对股骨向前推出，使胫骨平台充分显露，此时将螺钉3插入骨刀2的开槽23和骨撬手柄11上的孔槽13中，手用力拧螺钉3的旋耳311将螺钉3旋紧，从而将骨撬1和骨刀2螺接，然后垂直于胫骨平台将刀头22插入胫骨平台骨质内，从骨刀2上的刻度读出骨刀2插入胫骨平台的深度，在插入合适深度后再进行截骨，由于有骨刀对后交叉韧带下止点进行保护，可以完整保留后交叉韧带胫骨平台止点骨质。The posterior cruciate ligament protection device of the present invention is used for total knee arthroplasty. When in use, theauxiliary crowbar 12 of thebone pry 1 is first used to wrap the trochlear groove of the femur and the front of the posterior cruciate ligament, and thearms 131 on both sides of thepry head 13 are held. Hold the tibial plateau and place the posterior cruciate ligament at theU-shaped opening 132 for protection, then hold thehandle 1 and apply force backwards, and then drive the auxiliary pryingboard 12 to push the tibial plateau forward relative to the femur, so that the tibial plateau is fully exposed. When inserting thescrew 3 into theslot 23 of thebone knife 2 and thehole slot 13 on the bone pryhandle 11, thescrew 3 is screwed by thescrew lug 311 of thescrew 3 by hand, so that thebone pry 1 and thebone knife 2 are screwed together. , and then insert thecutter head 22 into the bone of the tibial plateau perpendicular to the tibial plateau, read the depth of theosteotome 2 inserted into the tibial plateau from the scale on theosteotome 2, and perform the osteotomy after inserting the appropriate depth. The inferior insertion point of the posterior cruciate ligament is protected, and the bone at the insertion point of the posterior cruciate ligament tibial plateau can be completely preserved.

虽然，上文中已经用一般性说明及具体实施方案对本发明作了详尽的描述，但在本发明基础上，可以对之作一些修改或改进，这对本领域技术人员而言是显而易见的。因此，在不偏离本发明精神的基础上所做的这些修改或改进，均属于本发明要求保护的范围。Although the present invention has been described in detail above with general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention fall within the scope of the claimed protection of the present invention.

Claims (8)

Translated fromChinese

1.一种后交叉韧带保护装置，其特征在于，包括骨撬、骨刀和螺钉，1. a posterior cruciate ligament protection device, is characterized in that, comprises bone pry, bone knife and screw,所述骨撬包括手柄、辅助撬板和撬头，所述手柄、辅助撬板和撬头一体成型，所述手柄为扁平状，所述手柄的一端连接辅助撬板，所述辅助撬板为扁平弧形结构，与股骨滑车沟相匹配，在所述辅助撬板远离所述手柄的一端连接撬头，所述撬头由两侧臂组成，所述两侧臂之间形成U形开口，在所述手柄靠近所述辅助撬板的一端所述手柄上还设有孔槽和挡台，所述孔槽贯通所述手柄和挡台，所述孔槽孔壁上设有螺纹；The bone pry includes a handle, an auxiliary prying board and a prying head, the handle, the auxiliary prying board and the prying head are integrally formed, the handle is flat, and one end of the handle is connected to the auxiliary prying board, and the auxiliary prying board is The flat arc structure is matched with the trochlear groove of the femur, and a pry head is connected to the end of the auxiliary pry plate away from the handle. The pry head is composed of two arms, and a U-shaped opening is formed between the two arms. The handle is also provided with a hole groove and a stop on one end of the handle close to the auxiliary skid plate, the hole groove penetrates the handle and the stop, and the hole wall of the hole groove is provided with a thread;所述骨刀包括一刀柄，刀柄为扁平状，刀柄的一端一体连接一刀头，所述刀柄上设置有一个开槽；The bone knife includes a handle, the handle is flat, one end of the handle is integrally connected with a cutter head, and a slot is arranged on the handle;所述螺钉包括钉头和钉杆，所述钉头包括两个对称设置的旋耳，所述钉杆上设有螺纹；The screw includes a nail head and a nail rod, the nail head includes two symmetrically arranged screw ears, and the nail rod is provided with threads;所述螺钉从骨刀的开槽中穿入，再从骨撬的手柄上的孔槽中穿出，将所述骨刀与骨撬螺接；The screw is inserted into the slot of the bone knife, and then passed out from the hole groove on the handle of the bone pry, and the bone knife and the bone pry are screwed together;所述骨刀位于开槽两侧的刀柄上设置有刻度线，所述骨撬的手柄上设有标记线，当骨刀准备插入骨时，所述骨撬的手柄上的标记线与骨刀上的0刻度线正好对准，随后骨刀向下插入骨中，骨刀插入骨的深度即为标记线所对的刻度线的读数；The knife handle located on both sides of the slot is provided with a scale line, and the handle of the bone pry is provided with a marking line. When the bone knife is ready to be inserted into the bone, the marking line on the handle of the bone pry matches the bone. The 0 scale line on the knife is exactly aligned, and then the bone knife is inserted into the bone downward, and the depth of the bone knife inserted into the bone is the reading of the scale line corresponding to the marked line;在使用时首先使用骨撬的辅助撬板包裹在股骨的滑车沟和后交叉韧带前方，将撬头的两侧臂把持住胫骨平台并将后交叉韧带置于U形开口处予以保护，然后手握持手柄向后用力，进而带动辅助撬板将胫骨平台相对股骨向前推出，使胫骨平台充分显露，此时将螺钉插入骨刀的开槽和骨撬的手柄上的孔槽中，手用力拧螺钉的旋耳将螺钉旋紧，从而将骨撬和骨刀螺接，然后垂直于胫骨平台将刀头插入胫骨平台骨质内，从骨刀上的刻度读出骨刀插入胫骨平台的深度，在插入合适深度后再进行截骨，由于有骨刀对后交叉韧带下止点进行保护，可以完整保留后交叉韧带胫骨平台止点骨质。When in use, first use the auxiliary prying plate of the bone pry to wrap the trochlear groove of the femur and the front of the posterior cruciate ligament, hold the tibial platform with the two arms of the pry head and place the posterior cruciate ligament in the U-shaped opening for protection, and then hand Hold the handle and force it backwards, and then drive the auxiliary prying plate to push the tibial plateau forward relative to the femur, so that the tibial plateau is fully exposed. At this time, insert the screw into the slot of the bone knife and the hole on the handle of the bone pry, and apply force with your hand. Tighten the screw by screwing the screw lug, so that the bone lever and the bone knife are screwed together, then insert the knife head into the bone of the tibial plateau perpendicular to the tibial plateau, and read the depth of the bone knife inserted into the tibial plateau from the scale on the bone knife , After inserting the appropriate depth, the osteotomy is performed. Because the osteotome protects the inferior insertion point of the posterior cruciate ligament, the bone at the insertion point of the tibial plateau of the posterior cruciate ligament can be completely preserved.2.如权利要求1所述的后交叉韧带保护装置，其特征在于，所述两侧臂的端部为V形。2 . The posterior cruciate ligament protection device according to claim 1 , wherein the ends of the arms on both sides are V-shaped. 3 .3.如权利要求1所述的后交叉韧带保护装置，其特征在于，所述U形开口的高度为20-40mm。3. The posterior cruciate ligament protection device according to claim 1, wherein the height of the U-shaped opening is 20-40 mm.4.如权利要求1所述的后交叉韧带保护装置，其特征在于，所述骨刀的刀头相对于刀柄平面翘起一定高度。4 . The posterior cruciate ligament protection device according to claim 1 , wherein the head of the bone knife is tilted by a certain height relative to the plane of the knife handle. 5 .5.如权利要求4所述的后交叉韧带保护装置，其特征在于，所述骨刀的刀头相对于刀柄平面翘起的高度为0-20mm。5 . The posterior cruciate ligament protection device according to claim 4 , wherein the height of the blade head of the osteotome relative to the plane of the blade handle is 0-20 mm. 6 .6.如权利要求1所述的后交叉韧带保护装置，其特征在于，所述骨刀的刀头为直型刀头或U型刀头。6 . The posterior cruciate ligament protection device according to claim 1 , wherein the cutter head of the osteotome is a straight cutter head or a U-shaped cutter head. 7 .7.如权利要求1所述的后交叉韧带保护装置，其特征在于，所述骨撬的手柄远离辅助撬板的一端上还设有挂环。7 . The posterior cruciate ligament protection device according to claim 1 , wherein a hanging ring is further provided on one end of the handle of the bone pry away from the auxiliary prying board. 8 .8.如权利要求1-7任意一项所述的后交叉韧带保护装置，其特征在于，所述骨撬和骨刀均采用不锈钢材料制成。8. The posterior cruciate ligament protection device according to any one of claims 1-7, wherein the bone lever and the bone knife are made of stainless steel.

Images