CN219230014U - Tibia single plane osteotomy cutting depth and expanding and fixing system - Google Patents

Abstract

The utility model provides a tibia monoplane osteotomy cutting depth and opening fixing system which comprises an osteotomy pendulum saw blade, a scale bone knife and a positioning opening device, wherein the osteotomy pendulum saw blade comprises saw teeth, a saw blade and a pendulum saw bayonet, the scale bone knife comprises a handle, a knife body and a knife edge, scales are arranged on the saw blade, knife body scales are arranged on the scale bone knife body, the positioning opening device comprises two handles and a scale positioning buckle, one end of the scale positioning buckle is hinged with one end of one handle, the two handles are hinged through a middle part, and an opening is formed at the other end of the two handles. The utility model relates to a complete set of equipment, which comprises an osteotomy pendulum saw blade with specific scales, a positioning osteotome with specific scales, and an osteotomy spreader with a positioning function, wherein the osteotomy spreader is laterally placed into an osteotomy opening.

Description

Tibia single plane osteotomy cutting depth and expanding and fixing system

Technical Field

The utility model belongs to the field of surgical instruments, and particularly relates to a tibial single-plane osteotomy depth and distraction fixation system.

Background

The existing tibia high-level osteotomy special instrument is mainly used for positioning a guide plate and a positioning guide block in the osteotomy line direction and is used for positioning the osteotomy opening direction and the direction of a guide needle. There is no guidance of osteotomy depth. Or some saw blade scales only have a rough range and no data is precisely calibrated. A special osteotome with no scales is marked. There is no spreader for spreading and fixing after osteotomy. Such as the following patent documents:

prior art 1: application (patent) No.: CN201521033901.7 grant publication number: CN205359552U entitled "high-level tibial osteotomy surgical instrument" for guiding a saw blade to perform a high-level tibial osteotomy of a tibia, comprising: a substrate having a first surface and an edge; a guiding slot arranged on the first surface for guiding the saw blade and limiting a first cutting position of the saw blade; a guiding edge arranged at the edge of the substrate for guiding a second cutting position of the saw blade; the fixing slots are arranged on the first surface and used for fixing the high-level tibia osteotomy surgical instrument on the surface of the tibia; the saw blade cuts the tibia according to the first cutting position and the second cutting position, so as to perform the high-level tibia osteotomy. The guide grooves of the technique do not mark specific scales of osteotomy depth.

Prior art 2: application (patent) No.: CN202022625155.8 grant publication number: CN214907692U name "a tibia high level osteotomy locator" belongs to the technical field of orthopedics medical instrument, and is used for locating kirschner wire and osteotomy saw when tibia is osteotomy. The technical proposal is as follows: the guide arm is semicircle arc, and the upper end and the lower part of guide arm overlap respectively are equipped with fibula mark hook and kirschner wire locating piece, have the kirschner wire locating hole along the radius of guide arm on the kirschner wire locating piece, and the kirschner wire passes the front end of kirschner wire locating hole and fibula mark hook and is relative, and the osteotomy guide piece is placed in tibia osteotomy department, and the tibia side is beaten into to the front end of kirschner wire through the kirschner wire guiding hole on the osteotomy guide piece, and there is the osteotomy groove below the kirschner wire guiding hole of osteotomy guide piece, and the operation personnel can carry out osteotomy operation to the tibia along the osteotomy groove. The utility model has reasonable structure and convenient operation, can ensure that the Kirschner wire can be accurately positioned and driven in, can restrict the osteotomy tool, ensures that the osteotomy is accurately performed along the direction indicated by the Kirschner wire, shortens the operation time and ensures the quality of the osteotomy operation. The technique is mainly used for guiding the osteotomy line direction in the closed osteotomy operation, and has no calibration and guide of the osteotomy depth and no fixed spreader.

Prior art 3: application (patent) No.: CN201710312272.9 application publication No.: CN107049418A name: a tibia high osteotomy guide belongs to the technical field of orthopedics medical appliances and is used for grooving and placing a gasket for tibia high osteotomy. The technical proposal is as follows: the crossbeam is connected two horizontal positioning guide pipes perpendicular to the crossbeam, the internal diameter of the positioning guide pipe is matched with the external diameter of the Kirschner wire, the upper ends of the two parallel guide rails are respectively and fixedly connected with the two ends of the crossbeam vertically, the lower ends of the two guide rails are connected by a pull rod, the two sides of the guide plate are respectively and slidably matched with the two guide rails, the guide plate is provided with horizontal guide holes, the guide holes are rectangular long holes, the upper top surface and the lower bottom surface of the guide holes in the guide plate are mutually parallel inclined planes, the inclined planes incline above the plate surface on one side of the positioning guide pipe, the height of the guide holes is matched with the external diameter of the drill bit, and locking screw holes are formed in the side surfaces of the guide rails. The guide hole of the utility model can guide and restrict the drill bit, so that the drilling is quick, convenient and accurate, and the positioning of the osteotomy depth and the function of the opening angle after osteotomy are not generated

Disclosure of Invention

The utility model provides a tibial single-plane osteotomy cutting depth and distraction fixation system, which can effectively solve the following problems:

(1) In the key osteotomy process, because of the inconsistency of instruments or the lack of a set of uniform depth limiting saw blade and drill bit (the instruments which are necessary in the osteotomy operation), the osteotomy depth cannot be accurately mastered, so that the osteotomy depth is insufficient and cannot be opened; or too deep an osteotomy, fractures of the contralateral cortical bone, and risk of deep tissue damage.

(2) After the tibia opening is opened, when the opening angle is kept, no proper fixing instrument is used, the opening can not be accurately and stably kept by adopting manual leg support, the operation time can be increased, and the success rate of the operation is reduced. Multiple perspectives increase the X-ray exposure of the person.

In order to solve the problems, the utility model adopts the following technical scheme: the utility model provides a tibia monoplane cuts bone depth of cut and struts fixing system, includes cuts bone pendulum saw bit, scale osteotome and location and struts ware, it includes sawtooth, saw bit and pendulum saw bayonet socket to cut bone pendulum saw bit, scale osteotome includes handle, blade and cutting edge, be provided with the scale on the saw bit, be provided with the blade scale on the scale osteotome blade, the location struts ware and includes two handles and scale location buckle, scale location buckle one end is articulated with one of them handle's one end, two handles are articulated through the mid portion, and the other end of two handles forms and struts the opening.

Furthermore, the scale positioning buckle is long, and one side of the scale positioning buckle is provided with a clamping groove.

Further, the calibration range of the osteotomy pendulum saw blade to the osteotomy depth comprises: 24. 26, 28, 30, a small cell per 0.5cm, a large cell per 1 cm.

The utility model has the beneficial effects that:

in the osteotomy fixing link of the single-plane tibia high-level osteotomy operation, firstly, the specific scales of the electric saw blade are utilized to position the osteotomy depth, so that the optimal osteotomy depth and range are achieved. The scale of the saw blade is statistically determined according to the measured data of a large number of cases of osteotomy. And then correction is performed by using a bone knife with a specific scale. And then using a spreader with a positioning function to maintain the opening angle after osteotomy, and adjusting the spreading angle of a spreader according to the angle measured by lower limb radiographic images, so as to provide an accurate angle and a stable opening for the next titanium plate fixation and bone grafting. The shaking and angle deviation caused by manual holding of the lower leg by an assistant are avoided. And meanwhile, the radiation exposure of personnel is reduced during the shooting in operation.

The utility model can improve the success rate of operation, reduce the operation time and reduce the X-ray exposure of patients and operators in practical application.

Drawings

FIG. 1 is a schematic view of the overall structure of an osteotomy swing saw blade of the present utility model;

FIG. 2 is a schematic diagram of the overall structure of the scale osteotome of the present utility model;

FIG. 3 is a schematic view of the overall structure of the positioning distractor of the present utility model;

wherein: 101. saw teeth; 102. a saw blade; 103. a saw swing bayonet; 201. a handle; 202 knife body; 203. a blade; 301. a support opening; 302. a grip; 303. scale positioning buckle; 304. a clamping groove.

Detailed Description

The present application is described in further detail below with reference to examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model.

Examples:

the following instruments are required to be used in sequence in the key steps of the surgical osteotomy.

Instrument 1 osteotomy pendulum saw blade (fig. 1): the osteotomy pendulum saw blade comprises saw teeth 101, a scale saw blade 102 and a pendulum saw bayonet 103. The difference from the prior art is that the specific scale represents the depth of the osteotomy. The scale data is derived from the osteotomy depth data of the actual case and is calibrated within the optimal osteotomy depth range. The swing saw bayonet 103 is a universal orthopedic electric swing saw bayonet. The swing saw is provided with a saw blade, and the cortical bone on the inner side of the tibia is sawed along the osteotomy direction. In use, the saw blade is driven to reciprocate by the power of the pendulum saw, and the saw teeth saw bone tissues. In the osteotomy operation, the specific scale of the swing saw blade is utilized to position the osteotomy depth, so that the optimal osteotomy depth and range can be achieved. The scale of the saw blade is statistically determined according to the measured data of a large number of cases of osteotomy. The osteotomy depth can be guided according to the positioning scales marked by the saw blade in the osteotomy process. And (3) rotating the swing saw direction to cut the anterior and posterior lateral cortex of the tibia, and keeping the lateral cortex from being cut once.

Use instrument 2 scale osteotome (fig. 2): the osteotome for osteotomy comprises a handle 201, a blade 202, a blade scale and a blade 203. The difference with the prior art is that the graduation of the graduation bone knife can not only indicate the cutting depth, but also be used for measuring. In operation, a bone knife with a specific scale is used for correcting the osteotomy range. For the residual uncut bone, the bone can be cut by using the bone hammer to strike the handle end of the bone knife and the blade of the bone knife. The osteotome is inserted into the osteotomy line, and the osteotomy depth is measured with the osteotome scale.

Positioning the spreader using instrument 3 (fig. 3): the bone cutting positioning spreader comprises a spreading opening 301, a grip 302 and a scale positioning buckle 303. There are no instruments of the same technology. Compared with a general spreader, the innovation is that: (1) the lateral opening is favorable for observation and operation, and the fixation of the bone grafting and the titanium plate is not affected. (2) And (5) automatic locking. (3) A clamping groove with specific scales. At this time, the opening angle after osteotomy is maintained by using the spreader with the positioning function, the spreader opening 301 of the spreader is placed into the osteotomy line opening measured in the tibia, and the handle is gradually gripped to spread the osteotomy opening. The angle is gradually increased, the clamping groove can be automatically clamped, and the outer cortical bone is deformed and broken along with the abduction action. When the opening reaches the proper size (the inner side is spread for 1.5 cm) marked by the scales, the opening angle can be maintained by loosening the hands, and the stability is maintained. And performing X-ray perspective, and adjusting the opening angle of the opener according to the angle measured by lower limb radiographic images to provide an accurate angle and a stable opening for the next titanium plate fixation and bone grafting. X-ray fluoroscopy shows that the connecting line of the distal end of the femoral condyle and the fibula force line form 93 degrees, namely, the osteotomy angle is proper, and the correction is satisfactory. Maintaining the opening angle of the opener, implanting wedge-shaped bone blocks, putting titanium steel plates, and sequentially screwing in screws for fixation, so that the opener can be withdrawn.

The operation steps are as follows:

in an ultra-clean operating room, after anesthesia is effective, a patient lies on the back, a conventional disinfection drape is used, an X-ray positioning tibia osteotomy line is used, a longitudinal incision is formed at the position of a goose foot at the inner edge of the tibia by 6cm, the tendon of the goose foot is exposed, an electric saw cuts off the cortical bone at the inner side of the tibia, and the tibial fibular cortex is weakened according to the positioning osteotomy line.

Use of instrument 1 osteotomy pendulum saw blade (fig. 1): firstly, the specific scale of the swing saw blade is utilized to position the osteotomy depth, so as to achieve the optimal osteotomy depth and range. The scale of the saw blade is statistically determined according to the measured data of a large number of cases of osteotomy. The swing saw is provided with a saw blade, and the cortical bone on the inner side of the tibia is sawed along the osteotomy direction. The osteotomy depth can be guided according to the positioning scales marked by the saw blade in the osteotomy process. The swing saw is rotated to cut the anterior and posterior tibial cortex, leaving the lateral cortex uncut.

Use instrument 2 scale osteotome (fig. 2): and then correction is performed by using a bone knife with a specific scale. The residual bone is cut by a blade for residual bone, a bone knife is inserted into the osteotomy line, and the osteotomy depth is measured by a bone knife scale. The drill bit and the Kirschner wire are adopted, a plurality of holes are drilled on the outer cortical bone from the inner side to the outer side along the osteotomy line, and the outer cortical bone is weakened. The assistant then holds the outside of the knee joint in one hand and abducts the calf in the other hand.

Positioning the spreader using instrument 3 (fig. 3): at this time, an opening angle after osteotomy is maintained by using an opening instrument with a positioning function, an opening of an opener is placed into an osteotomy line opening measured in tibia, and a handle is gradually held tightly to open the osteotomy opening. The angle is gradually increased, the positioning groove can be automatically clamped, and the outer cortical bone is deformed and broken along with the abduction action. When the opening reaches the proper size (the inner side is spread for 1.5 cm) marked by the scales, the opening angle can be maintained by loosening the hands, and the stability is maintained.

At the moment, X-ray perspective is carried out, and the opening angle of the opener is adjusted according to the angle measured by lower limb radiographic images, so that an accurate angle and a stable opening are provided for the fixation of the titanium plate and bone grafting in the next step. X-ray fluoroscopy shows that the connecting line of the distal end of the femoral condyle and the fibula force line form 93 degrees, namely, the osteotomy angle is proper, and the correction is satisfactory. Maintaining the opening angle of the spreader, implanting wedge-shaped bone blocks, putting titanium steel plates, sequentially screwing in screws for fixation, and withdrawing the spreader. And the screw position of the titanium steel plate is satisfied by perspective again. The suture incision is irrigated, and negative pressure drainage is placed. And (5) pressurizing and binding auxiliary materials, and finishing the operation.

(1) The utility model is used in osteotomy and fixation links of single plane tibia high osteotomy. The bone cutting depth is accurate, the operation time is reduced, the bone cutting device is accurately opened, and shaking and angle deviation caused by manual holding of the lower leg by an assistant are avoided. The surgical field and operation are not affected when the bone grafting and the titanium plate fixation are carried out. The X-ray radiography device has the advantages of flexible operation, accurate positioning and guiding, stable supporting angle maintenance, and reduced shooting times in operation, and also reduces the ray exposure of personnel.

(2) The utility model relates to a complete set of equipment, which comprises an osteotomy pendulum saw blade with specific scales, a positioning osteotome with specific scales, and an osteotomy spreader with a positioning function, wherein the osteotomy spreader is laterally placed into an osteotomy opening.

(3) The scales of the pendulum saw blade and the osteotome are scale ranges designed based on clinical osteotomy depth data. And calibrating the osteotomy depth by the osteotomy saw blade. The range includes: 24. 26, 28, 30, one cell per 0.5cm and one large cell per 1cm, are references given based on actual data verified during surgery. Help to judge the osteotomy depth, and is special for the present operation type.

The spreader is a lateral opening, is convenient to be placed into an osteotomy line, and does not affect the visual field in operation, bone grafting and fixation operation of the upper titanium plate. The tail end of the spreader is provided with a positioning groove, and the spreader is automatically positioned and clamped in the spreading process. The opening angle can be maintained by loosening hands. The scales of the clamping grooves are designed according to the data given by the large data of the actual osteotomy cases, and are special for the operation type.

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the utility model. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims (3)

1. The utility model provides a tibia monoplane cuts bone depth of cut and struts fixing system, includes cuts bone pendulum saw bit, scale osteotome and location and struts ware, it includes sawtooth (101), saw bit (102) and pendulum saw bayonet socket (103) to cut bone pendulum saw bit, scale osteotome includes handle (201), blade (202) and cutting edge (203), its characterized in that: the utility model discloses a saw blade, including saw blade (102), scale bone knife blade (202) is provided with the scale, location spreader includes two handles (302) and scale location buckle (303), scale location buckle (303) one end is articulated with one of them handle (302), two handles (302) are articulated through the mid portion, and the other end of two handles (302) forms and props opening (301).

2. The tibial uniplanar osteotomy depth cut and distractor fixation system of claim 1, wherein: the scale positioning buckle (303) is of a strip shape, and a clamping groove (304) is formed in one side of the scale positioning buckle (303).

3. The tibial uniplanar osteotomy depth cut and distractor fixation system of claim 1, wherein: the calibration range of the osteotomy pendulum saw blade to the osteotomy depth comprises: 24. 26, 28, 30, a small cell per 0.5cm, a large cell per 1 cm.

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