Knee joint restraining device for operative position frame

Abstract

The utility model discloses a knee joint restraining device for an operative position frame. The knee joint restraining device comprises a bracket, a supporting assembly and an adjusting assembly. The bracket is of an L-shaped structure and used for supporting the knee joint from the position below the knee joint of a patient. Limiting plates are hinged to the two sides of the two right-angle side parts of the bracket respectively, the upper portion and the lower portion of the knee joint are fixed through the clamping handle type limiting plates respectively, the fixing position and the contact area of fixing component limbs are enlarged, and therefore the knee joint of a patient can be completely fixed and cannot move. The supporting assembly is provided with two mounting parts used for fixing the brackets, the two mounting parts are symmetrically arranged relative to the vertical middle line of the operating bed, and the knees of the patient are restrained by the two brackets so that the two legs of the patient can be unfolded to achieve the lithotomy position; the mounting parts are movably connected relative to the operating bed, and the adjusting assembly is arranged between the two mounting parts and used for adjusting the opening angle between the two brackets, so that the opening angle of the lithotomy position of a patient can be quickly adjusted.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically to a knee joint restraint device for a surgical positioning frame. Background Technology

[0002] In medical surgeries, especially in obstetrics and gynecology and colorectal surgery, the lithotomy position is one of the commonly used positions. Usually, a special fixation device is used to fix the patient's legs, so that the patient's head is spread out in the lithotomy position.

[0003] Existing fixation devices have many problems. For example, the invention patent with publication number CN115245434A, a medical lithotomy leg support, has the following issues:

[0004] Using a single strap to fix the patient's lower limbs is not secure enough, allowing the patient's lower limbs to move relative to the support frame during surgery, making it impossible to maintain the required lithotomy position throughout the procedure.

[0005] Adjusting the opening angle of the patient's lithotomy position requires adjusting the multi-link hinge mechanism in the support frame. After adjustment, the multi-link hinge mechanism also needs to be fixed. The adjustment is cumbersome, and the fixing structure in the multi-link hinge mechanism is prone to loosening, which can cause changes in the patient's lithotomy position.

[0006] Furthermore, the support frame is composed of a multi-link hinge mechanism, which makes the support frame unstable and may shake during the operation, affecting the surgical procedure. Utility Model Content

[0007] The purpose of this invention is to provide a knee joint restraint device for surgical positioning frames, which can fix multiple points of the knee joint of multiple patients and simplify the adjustment structure, so as to solve the technical problems existing in the prior art.

[0008] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:

[0009] A knee restraint device for a surgical positioning frame includes: a bracket, the bracket being L-shaped with its right angles facing upwards, for supporting the knee joint from below; limiting plates are hinged to both sides of the two right-angled sides of the bracket, and a connecting assembly is provided between the two limiting plates located on the same right-angled side, capable of restraining the upper and lower parts of the patient's knee joint respectively; a support assembly, the support assembly being disposed on the operating table, with two brackets, each support assembly having two mounting parts for fixing the brackets, and the two mounting parts being symmetrically arranged with respect to the vertical center line of the operating table, allowing the patient's legs to be spread apart under the restraint of the two brackets to achieve the lithotomy position; and an adjustment assembly, the mounting parts being movably connected to the operating table, the adjustment assembly being disposed between the two mounting parts, for adjusting the opening angle between the two brackets.

[0010] Furthermore, the surfaces of the bracket that contact the patient's lower limbs and the surfaces of the limiting plate that contact the patient's lower limbs are concave; and both the surfaces of the bracket that contact the patient's lower limbs and the surfaces of the limiting plate that contact the patient's lower limbs are provided with soft pads.

[0011] Furthermore, the connecting assembly includes two bandages and snaps respectively disposed at the ends of the bandages. The two bandages are detachably connected by the snaps, and the other ends of the two bandages are respectively connected to the corresponding limiting plates.

[0012] Furthermore, the mounting part includes a support base, the bottom surface and the top surface of the support base are respectively provided with a rotating shaft and a support column in the vertical direction, the rotating shaft is used to rotate relative to the operating table, and the top end of the support column is used to fix the bracket.

[0013] Furthermore, the adjustment assembly includes an adjustment block and connecting rods symmetrically arranged on both sides of the adjustment block, with the two ends of the connecting rods respectively hinged to the adjustment block and the support seat; the operating table is provided with a first sliding groove along the vertical center line, and the adjustment block slides along the first sliding groove, so that the two support seats rotate synchronously to adjust the opening angle between the two brackets.

[0014] Furthermore, a first lead screw pair is provided at the bottom of the operating table along the location of the first slide groove. The adjusting block passes through the first slide groove and is connected to the nut of the first lead screw pair. The adjusting block is driven to slide along the first slide groove by the first lead screw pair.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] The present invention provides a knee joint restraint device for a surgical positioning frame, which uses a clamp-type limiting plate to fix the upper and lower parts of the knee joint respectively, thereby expanding the contact area between the fixing position and the limb of the fixing component, so as to completely fix the patient's knee joint and prevent it from moving.

[0017] By synchronously driving the two mounting parts to rotate through the first lead screw pair, the opening angle of the patient's lithotomy position can be quickly adjusted, and the adjustment accuracy can be improved. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 A schematic diagram of a knee restraint device used in surgical positioning frames;

[0020] Figure 2 This is a structural diagram of the connecting components;

[0021] Figure 3 This is a schematic diagram of another embodiment of the present application.

[0022] The labels in the diagram represent the following:

[0023] 1-Bracket, 11-Limiting plate, 12-Bandage, 13-Snap fastener, 14-Padded pad;

[0024] 2-Installation part, 21-Support base, 22-Support column;

[0025] 3-Adjusting component, 31-Adjusting block, 32-First lead screw pair, 33-First slide groove, 34-Connecting rod;

[0026] 4-Operating table, 41-Mattress, 42-Groove;

[0027] 5-Limiting component, 51-Second through groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figure 1 As shown, this utility model provides a specific embodiment of a knee joint restraint device for a surgical positioning frame, including a bracket 1, a support assembly, and an adjustment assembly 3. Among them,

[0030] The bracket 1 has an L-shaped structure, with the right angle of the bracket 1 facing upwards, and is used to support the knee joint from below the patient's knee joint.

[0031] Limiting plates 11 are hinged to both sides of the two right-angled sides of the bracket 1, which can clamp the upper and lower parts of the patient's knee joint respectively; at the same time, a connecting component is provided between the two limiting plates 11 located on the same right-angled side to fix the distance between the two limiting plates 11 after clamping, thereby constraining the upper and lower parts of the patient's knee joint, so that the entire bracket 1 can completely fix the patient's knee.

[0032] The support assembly is set on the operating table 4. There are two brackets 1. The support assembly has two mounting parts 2 for fixing the brackets 1. The two mounting parts 2 are symmetrically arranged with respect to the vertical center line of the operating table 4. The patient's knees are constrained by the two brackets 1 so that the patient's legs can be spread apart to achieve the lithotomy position.

[0033] Furthermore, the mounting part 2 is movably connected to the operating table 4, and the adjustment component 3 is disposed between the two mounting parts 2 to adjust the rotation angle of the two mounting parts 2, thereby adjusting the opening angle between the two brackets 1, and can fix the opening angle between the two brackets 1.

[0034] This embodiment also provides an example of bracket 1, such as... Figure 1 As shown:

[0035] The surfaces of the bracket 1 and the limiting plate 11 that contact the patient's lower limbs are concave, which allows the bracket 1 and the limiting plate 11 to fit more closely to the patient's lower limbs during the fixing process.

[0036] Furthermore, the surfaces of the support 1 that come into contact with the patient's lower limbs and the surfaces of the limiting plate 11 that come into contact with the patient's lower limbs are all equipped with soft pads 14 to prevent poor blood circulation in the patient's legs and the formation of pressure sores due to prolonged surgery.

[0037] This embodiment also provides embodiments of connecting components, such as... Figure 2 As shown:

[0038] The connecting assembly includes two bandages 12 and snaps 13 respectively disposed at the ends of the bandages 12. The two bandages 12 are detachably connected by the snaps 13, and the other ends of the two bandages 12 are respectively connected to the corresponding limiting plates 11.

[0039] Furthermore, the snap 13 can be adjusted to the position at the end of the corresponding bandage 12 according to the patient's leg circumference, so that the clamping degree of the two limiting plates 11 can match the patient's leg circumference.

[0040] This implementation also provides embodiments of supporting components, such as... Figure 1 As shown:

[0041] The support assembly consists of two independent mounting parts 2; the mounting part 2 includes a support base 21, the bottom surface and the top surface of the support base 21 are respectively provided with a rotating shaft and a support column 22 in the vertical direction, the rotating shaft is used to enable the support base 21 to rotate relative to the operating table 4, and the top of the support column 22 is used to fix the mounting bracket 1.

[0042] This embodiment also provides an embodiment of the adjustment component 3, such as... Figure 1 As shown:

[0043] The adjustment assembly 3 includes an adjustment block 31 and connecting rods 34 symmetrically arranged on both sides of the adjustment block 31. The two ends of the connecting rods 34 are respectively hinged to the adjustment block 31 and the support seat 21. The operating table 4 is provided with a first slide groove 33 along the vertical center line. The adjustment block 31 slides along the first slide groove 33, so that the two support seats 21 rotate synchronously to adjust the opening angle between the two brackets 1.

[0044] Furthermore, the bottom of the operating table 4 is provided with a first lead screw pair 32 along the location of the first slide groove 33. The adjusting block 31 passes through the first slide groove 33 and is connected to the nut of the first lead screw pair 32. The adjusting block 31 is driven to slide along the first slide groove 33 by the first lead screw pair 32 to improve the movement accuracy of the adjusting block 31.

[0045] Furthermore, in order to allow patients of different heights to adapt to the positions of the two supports 1, this embodiment also provides the following examples, such as... Figure 3 As shown:

[0046] The operating table 4 is provided with a second slide groove 51 along the vertical center line. The second slide groove 51 is provided with a limiting member 5 that can slide along the second slide groove 51. The limiting member 5 is used to restrict the position of the buttocks when the patient lies on the operating table 4. By adjusting the position of the limiting member 5, the distance between the patient's buttocks and the support 1 can be adjusted so that when patients of different heights lie on the operating table 4 according to the position restricted by the limiting member 5, the patient's knee joint is exactly at a right angle to the support 1.

[0047] Furthermore, the bottom of the operating table 4 is provided with a second lead screw pair (not shown in the figure) along the position of the second slide groove 51. The limiting member 5 passes through the second slide groove 51 and is connected to the nut of the second lead screw pair. The limiting member 5 is driven to slide along the second slide groove 51 by the second lead screw pair.

[0048] Furthermore, while adjusting the opening angle of the bracket 1, the position of the limiting member 5 can also be adjusted simultaneously to avoid discomfort to the patient.

[0049] For example, when the opening angle between the two brackets 1 increases, the limiting member 5 can be adjusted to move relative to the patient's lower body; when the opening angle between the two brackets 1 decreases, the limiting member 5 can be adjusted to move relative to the patient's upper body.

[0050] Furthermore, the control of the first lead screw pair 32 and the second lead screw pair is operated by a handheld remote control.

[0051] Furthermore, for ease of use, the operating table 4 has a through groove 42 on the mattress 41 corresponding to it, and the structure and size of the limiting member allow the limiting member to pass through the through groove and be positioned above the mattress.

[0052] When the bracket 1 is used to fix the knee joint of patients of different heights, the contact angle between the thigh and the bracket 1 is different for patients of different heights. This results in a slight difference in the angle at which the bracket 1 fixes the patient's knee joint, which may cause a certain gap. However, the deformation of the soft pads on the bracket 1 and the limiting plate 11 can compensate for the different gap sizes, so that the bracket 1 can still completely fix the knee and therefore does not affect its use.

[0053] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A knee restraint for a surgical positioning frame, characterized in that, The utility model relates to a kind of surgical bed for knee arthroscopy, including: Bracket (1), the bracket (1) is L type structure, and the right angle of the bracket (1) is set upwards, for supporting knee joint from the below of the knee joint of patient;Two straight angle edge parts of the bracket (1) are respectively hinged with limiting plate (11), and connecting assembly is equipped between the two limiting plates (11) of same straight angle edge part, and the upper and lower of patient knee joint can be respectively constrained; Supporting assembly, the supporting assembly is set on operating table (4), the bracket (1) is equipped with two, the supporting assembly has two for fixing the mounting portion (2) of the bracket (1), and two the mounting portion (2) is symmetrically set relative to the vertical middle line of operating table (4), and the knee of patient is in the constraint of two the bracket (1) so that the legs of patient are opened to realize lithotomy position; Adjusting assembly (3), the mounting portion (2) is movably connected relative to the operating table (4), and the adjusting assembly (3) is set between two the mounting portion (2), for adjusting and fixing the opening angle between two bracket (1).

2. A knee restraint for a surgical positioner as defined in claim 1, wherein, The surface of the bracket (1) and the surface of the limiting plate (11) that patient lower limbs contact are concave, and the surface of the bracket (1) and the surface of the limiting plate (11) that patient lower limbs contact are provided with soft pad.

3. A knee restraint for a surgical positioner as defined in claim 2, wherein, The connecting assembly includes two bandages (12) and respectively set in bandage (12) end button (13), and two the bandage (12) is detachably connected through the button (13), and the other end of two the bandage (12) is connected with corresponding the limiting plate (11) respectively.

4. The knee restraint for a surgical positioner of claim 1, wherein, The mounting portion (2) includes support seat (21), the bottom surface and top surface of the support seat (21) are respectively provided with pivot and support column (22) along vertical direction, the pivot is used for rotating relative to the operating table (4), and the top end of the support column (22) is used for fixedly installing the bracket (1).

5. A knee restraint for a surgical positioner as defined in claim 4, wherein, The adjusting assembly (3) includes adjusting block (31) and link (34) symmetrically arranged on both sides of the adjusting block (31), and two ends of the link (34) are respectively hinged with the adjusting block (31) and the support seat (21). The operating table (4) is provided with first sliding groove (33) along the position of vertical middle line, the adjusting block (31) slides along the first sliding groove (33), so that two the support seat (21) synchronous rotation occurs, to adjust the opening angle between two bracket (1).

6. The knee restraint for a surgical positioner of claim 5, wherein, The bottom of the operating table (4) is provided with first screw pair (32) along the position of the first sliding groove (33), the adjusting block (31) passes through the first sliding groove (33) and is connected with the nut of the first screw pair (32), and the adjusting block (31) is driven to slide along the first sliding groove (33) by the first screw pair (32).

7. The knee restraint for a surgical positioner of claim 5, wherein, The surgical bed (4) is provided with a second sliding groove (51) along the vertical middle line, the second sliding groove (51) is provided with a limiting piece (5) capable of sliding along the second sliding groove (51), and the limiting piece (5) is used for limiting the position of the hip of the patient when the patient lies on the surgical bed (4); By adjusting the position of the limiting piece (5), the distance between the patient's hip and the bracket (1) is adjusted, so that when patients of different heights lie on the surgical bed (4) according to the position limited by the limiting piece (5), the knee joints of the patients are just located at the right angles of the bracket (1).

8. The knee restraint for a surgical positioner of claim 7, wherein, The bottom of the surgical bed (4) is provided with a second screw pair along the position of the second sliding groove (51), the limiting piece (5) passes through the second sliding groove (51) and is connected with the nut of the second screw pair, and the limiting piece (5) is driven to slide along the second sliding groove (51) by the second screw pair.

Images