CN212089773U

CN212089773U - Knee joint replacement operation position adjustable device

Info

Publication number: CN212089773U
Application number: CN201922358270.0U
Authority: CN
Inventors: 张志峰; 魏晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-12-08
Anticipated expiration: 2029-12-24

Abstract

The utility model provides an adjustable device of knee joint replacement operation position, the device include disconnect-type mount, mounting fixture, support piece, sliding guide, tooth-like ratchet, flexible connector, adjustable anchor clamps. The separated fixing frame is used for fixing knee joint replacement instruments, operating tables and disinfection operating sheets; the fixing clamp is used for fixing the separated fixing frame and the operating bed; the supporting piece is used for supporting the sliding guide rail and the tooth-type ratchet mechanism and is of an integrated structure; the sliding guide rail is used for supporting and guiding the adjustable clamp; the tooth-type ratchet mechanism is used for changing the position of the adjustable clamp; the flexible connecting piece is used for sealing the tooth type ratchet mechanism; the adjustable clamp is used for fixing the position of the foot. The device solves the problems that: 1. the different positions of the lower limbs cannot be accurately repeated due to the free-hand fixation, and the variation degree of soft tissue force is large due to the different rotating positions of the lower limbs; 2. high labor intensity, easy infection, long operation time and the like. Belongs to the field of knee joint replacement auxiliary instruments.

Description

Knee joint replacement operation position adjustable device

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to knee joint replacement operation position adjustable device.

Background

The knee joint replacement has widely accepted curative effect in treating knee joint pathological changes caused by various reasons, and the stability of the joint of the lower limb can be effectively recovered by removing damaged bone tissues and installing the artificial joint prosthesis, thereby achieving the purpose of recovering the function of the affected limb. At present, knee joint replacement surgery's in-process needs affected limb knee joint bucking and perpendicular to bed surface, and this process is by the bare-handed supplementary fixed patient shank position of medical personnel, because operation time is long, intensity of labour is big, easily causes bare-handed fatigue, and the fixed unstability of affected limb probably causes the osteotomy deviation, leads to the operation failure even, influences affected limb postoperative curative effect. Therefore, the auxiliary device which is convenient for adjusting the position of the knee joint is designed, and has important significance for improving the efficiency and ensuring the operation quality.

To solve the problem, chinese patent publication No. CN109009582A discloses a knee joint replacement measuring device and measuring system in 2018, 12 and 18, which includes three sets of positioning mechanisms with slots, and is complicated to operate during the operation and difficult to sterilize the device. Chinese patent publication No. CN209075349U discloses a knee joint replacement surgery support frame in 2019, month 07 and 09, which includes a lifting assembly composed of a cylinder, a sliding block, a fixing plate and an expansion bracket, and does not consider the problems of radial movement and fixation of the legs of the patient. Chinese patent publication No. CN109223421A discloses a knee joint replacement support in 2019, month 01 and 18, which includes a support frame, a fixing rod, etc., wherein the legs of the patient move left and right and back and forth depending on the slots in the operation, the fixing frame of the legs of the patient needs to be raised to realize the conversion between the slots when the position is changed, and the fixation between the patent and the operation bed is achieved by blocking the necessary placement of the operation sheet through the vertical slot structure. Therefore, the method has the problems of inconvenient operation, obstruction of the laying of the sterile surgical drape and the like. Chinese patent publication No. CN110151480A discloses a lower limb fixing device for orthopedic knee joint replacement surgery in 2019, 08, 23.a top center of a support plate is welded with an angle adjusting device, a welding fixing device and the like, the whole device has a large volume and comprises units such as a motor drive, and the like, and the patent does not consider a disinfection link required by the knee joint fixing device in an actual surgery process. Chinese patent publication No. CN209107536U discloses a knee joint replacement surgery fixing device in 2019, month 07 and 16, which includes a fixing brace, a sliding device, a fixing element, etc., and the device cannot fix the position of the affected limb during the moving process, and does not fix the relative position with the operating bed, which is likely to cause the deviation of the relative position. Chinese patent publication No. CN109966108A discloses a knee joint replacement surgery auxiliary support, which includes a limiting groove, the operation is complicated during the surgery, and the difficulty in laying and disinfecting the surgical drape is caused. Chinese patent publication No. CN209059852U discloses a knee joint flexion retaining device for knee joint replacement surgery in 2019, month 07 and 05, which includes a cross bar, a foot support, a shank slot, a slot, etc., and does not consider the fixation of the device to an operating bed, which is likely to cause deviation in the surgical procedure. In conclusion, the knee joint replacement auxiliary device provided by the existing patent can only provide one model, has no practical application value in the knee joint replacement surgery auxiliary operation, and has no operability and repeatability in the knee joint replacement soft tissue balance measurement assistance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and provide a knee joint replacement operation position adjustable device which is simple and convenient to operate, wide in adjustable range, convenient to lay an operation sheet and compact in overall structure, and is easy to disinfect.

In order to solve the problem, the utility model provides an adjustable device of knee joint replacement surgery position, including disconnect-type mount, mounting fixture, support piece, sliding guide, tooth-like ratchet, flexible connector, adjustable anchor clamps. The width of the separated fixing frame can be adjusted through bolts, and the separated fixing frame can be fixed on the operating table through a fixing clamp. The support plate with the groove is matched with the separated fixing frame with the boss. The tooth-type ratchet mechanism moves longitudinally on the sliding guide rail to adjust the height and the position of the knee joint. The adjustable clamp adjusts the lateral position of the patient's foot during the surgery and can fix its position. The flexible connecting piece seals the tooth ratchet mechanism.

The separated fixing frame is composed of two parts with symmetrical structures, the edge of the separated fixing frame is provided with a through hole, the middle of the separated fixing frame is provided with a boss, and the two parts are connected through a bolt.

The supporting plate is provided with a groove structure.

The sliding guide rail and the tooth-type ratchet mechanism are fixed on the supporting plate.

The flexible connecting piece is used for sealing the tooth type ratchet mechanism.

The adjustable clamp has a symmetrical structure and consists of a supporting plate, a fixing plate, a clamping plate and a screw rod.

The fixing clamp is used for the relative position of the integral device and the operating table.

The whole structure is compact and easy for post-operation disinfection treatment.

Compared with the prior art, the utility model discloses obvious beneficial effect as follows has:

1. the separate type fixing frame considers the surgical drape which must be laid in the surgical process.

2. The sliding guide rail and the tooth-type ratchet mechanism are matched to form an integral structure, so that the height and the angle of the knee joint can be adjusted conveniently.

3. The adjustable clamp not only has a position to secure the patient's foot, but also is capable of adjusting its lateral position during the procedure.

Drawings

FIG. 1 is a schematic view of the assembled three-dimensional structure of the present invention

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will combine with the embodiments to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments, based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1, the present embodiment provides an adjustable device for a knee joint replacement surgery position, which includes a separable fixing frame 1, a supporting member 2, a sliding guide 3, an adjustable clamp 4, a tooth-type ratchet mechanism 5, a flexible connecting member 6, a fixed clamp 7, and a bolt 8. The two separated fixing frames 1 with symmetrical structures are provided with through hole structures at the edge positions and fixedly connected through bolts 8, the support piece 2 with a groove and the separated fixing frame 1 with a boss are fixed in relative position through a boss groove, the sliding guide rail 3 and the tooth-type ratchet mechanism 5 are fixed on the support piece 2 or are of an integral structure through bonding, the adjustable clamp 4 and the support piece 2 are fixed together through the flexible connecting piece 6 in a bonding mode and seal the tooth-type ratchet mechanism 5, the adjustable clamp 4 is composed of a fixing plate, a bottom plate, a baffle and threads, and the integral structure is fixed with an operating table through 3 to 4 sets of fixing clamps 7.

When in use, the separated fixing frame 1 is firstly placed on an operating bed, the width of the separated fixing frame is adjusted according to the personalized difference of a patient, the position of the separated fixing frame 1 is fixed through a bolt 8, and then the separated fixing frame is fixed with the operating bed through 3 to 4 sets of fixing clamps 7; then laying a sterile surgical drape on the separated fixing frame 1; then, the support piece 2 and the separated fixing frame 1 determine the position relation through the groove and the boss; secondly, the position of the tooth-type ratchet mechanism 5 on the sliding guide rail 3 is adjusted to meet the height and angle of the knee joint in the operation process; then the adjustable clamp 4 adjusts the transverse position of the feet of the patient and fixes the position of the feet of the patient to meet the requirement of the transverse position in the operation process; finally, the height and the angle of the knee joint are adjusted in the operation process, and the adjustable clamp is only pushed to drive the tooth-type ratchet mechanism 5.

Claims

1. A knee joint replacement surgery position adjustable device which characterized in that: comprises a separated fixing frame (1), a supporting piece (2), a sliding guide rail (3), an adjustable clamp (4), a tooth type ratchet mechanism (5), a flexible connecting piece (6), a fixed clamp (7) and a bolt (8), wherein the edge positions of the two separated fixing frames (1) with symmetrical structures are fixedly connected through the bolt (8), the supporting piece (2) with a groove and the separated fixing frame (1) with a boss are fixed with relative position relationship through a boss groove, the sliding guide rail (3) and the tooth type ratchet mechanism (5) are fixed on the supporting piece (2) through bonding or are of an integral structure, the adjustable clamp (4) and the supporting piece (2) are fixed together through the flexible connecting piece (6) in a bonding way, and the sealing tooth type ratchet mechanism (5) and the adjustable clamp (4) are composed of a fixed plate, a bottom plate, a baffle plate and threads, and the whole structure is fixed with the operating table through the fixed clamp (7).

2. The adjustable knee replacement surgery position device of claim 1, wherein: the separated fixing frame (1) is composed of two parts, is provided with a fixing boss, is connected through a bolt (8), and is fixed with the position of an operating bed through 3 to 4 sets of fixing clamps (7).

3. The adjustable knee replacement surgery position device of claim 1, wherein: the adjustable clamp (4) moves on the sliding guide rail (3), and the movement position of the adjustable clamp is limited by a tooth type ratchet mechanism (5).