Knee joint seat knee adjustment auxiliary seat and assembly
By designing knee-adjustment auxiliary seats with seat lifting and front-rear position adjustment mechanisms, the problems of poor adaptability and sliding of temporary seats are solved, and the adaptability and treatment effect for patients with different body shapes is achieved, and the treatment effect of knee osteoarthritis is improved.
Patent Information
- Application Number
- CN202422633872.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The existing temporarily assembled lift seats cannot meet the needs of patients of different body sizes, and are easy to slide, affecting the treatment effect of knee osteoarthritis.
A knee-mounted knee-adjustment auxiliary seat is designed, including a seat lifting adjustment mechanism and a front and rear position adjustment mechanism. The height and position adjustment of the backrest seat is achieved through the armrest pole and the sliding connection structure. It is equipped with a sliding positioning device and a locking device to fix the seat position, combining the lifting platform and foot fixing device to ensure patient comfort and treatment effect.
It can adapt to the needs of patients of different body sizes, ensure that the thighs are parallel to the ground and the knee joints are 90°, prevent the seat from sliding, improve the treatment effect, and save space.
Smart Images
Figure CN223287353U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment and relates to a knee joint seat auxiliary seat and components. Background Art
[0002] Knee osteoarthritis (KOA) is a degenerative disease characterized by degenerative changes in the knee cartilage and bone hyperplasia, which repeatedly stimulate and affect the surrounding tissues, leading to a series of pathological changes such as edema, exudation, and effusion, resulting in symptoms such as knee pain, redness, swelling, and limited mobility. Manual therapy is highly effective for most cases of KOA. Among these, the "seated knee adjustment" technique can effectively adjust the force alignment of the lower limb, improve the knee joint clearance angle, and significantly reduce the occurrence of knee wear and pain. However, the current practice of "seated knee adjustment" often uses a makeshift elevated chair, which is not well adapted to the needs of patients of varying body sizes. The seat can also easily slide, compromising the treatment's effectiveness. Utility Model Content
[0003] The purpose of the utility model is to provide a knee joint seat with knee adjustment auxiliary function in order to solve the above problems.
[0004] Another object of the present invention is to provide a knee joint seat adjustment auxiliary seat assembly.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A knee joint seat adjustment auxiliary seat comprises a backrest seat, wherein a seat lifting adjustment mechanism is provided at the bottom of the backrest seat, and the seat lifting adjustment mechanism is connected to a front-rear position adjustment mechanism capable of adjusting the front-rear position of the backrest seat.
[0007] The seat lifting adjustment mechanism and the front and back position adjustment mechanism can adjust the patient's sitting height and front and back position respectively, ensuring that the patient's thighs are parallel to the ground and the knee joints are at 90 degrees. It can adapt to the needs of patients of different body sizes, and the backrest will not slide to ensure the treatment effect.
[0008] In the above-mentioned knee joint seat adjustment auxiliary seat, the seat lifting and adjustment mechanism includes four armrest uprights which are respectively arranged on the four side corners of the backrest seat and are arranged vertically. Armrests are provided at the upper ends of the two armrest uprights on the same side of the backrest seat. The backrest seat and the armrest uprights are connected by a sliding connection structure. The bottom end of the backrest seat is provided with a manual hydraulic lifting rod which enables the backrest seat to slide vertically on the armrest uprights.
[0009] The armrests are used to support patients who have difficulty standing when they get up. The backrest seat can slide smoothly on the armrest uprights. The manual hydraulic lifting rod at the bottom of the backrest seat can manually drive the backrest seat to slide vertically on the armrest uprights to flexibly adjust the height of the backrest seat.
[0010] In the above-mentioned knee joint seat adjustment auxiliary seat, the sliding connection structure includes a sliding clamp that is sleeved on the armrest upright and slidably connected to the armrest upright, and a clamp mounting groove is provided on the side corner of the backrest seat, and the sliding clamp is fixedly connected in the clamp mounting groove.
[0011] The sliding clamp is fixed to the side corner of the backrest seat through the clamp mounting groove. The sliding clamp is sleeved on the armrest upright and is slidably connected between the armrest upright to ensure that the backrest seat can slide vertically on the armrest upright to achieve height adjustment of the backrest seat.
[0012] In the above-mentioned knee joint seat adjustment auxiliary seat, the front and rear position adjustment mechanism includes sliding rails arranged on both sides of the bottom end of the backrest seat, and the sliding rails are distributed along the front and rear directions of the backrest seat. A sliding cross bar is slidably connected in the sliding rails, and the two ends of the sliding cross bar are respectively connected to the lower ends of the two armrest uprights on the same side of the backrest seat. The bottom of the manual hydraulic lifting rod is provided with a synchronous sliding structure that enables the manual hydraulic lifting rod to slide with the backrest seat, and a sliding positioning device is also provided between the sliding rail and the sliding cross bar on one side.
[0013] When the backrest seat slides back and forth to adjust its front and back position, the synchronous sliding structure can make the manual hydraulic lifting rod synchronously follow the movement of the backrest seat. When the front and back position of the backrest seat is adjusted, the sliding positioning device between the sliding track and the sliding cross bar can position the sliding cross bar in the sliding track, ensuring that the backrest seat is fixed and no longer slides.
[0014] In the above-mentioned knee joint seat knee adjustment auxiliary seat, the sliding positioning device includes a positioning seat mounting groove arranged on the sliding rail, a positioning seat is embedded in the positioning seat mounting groove, the positioning seat is provided with a positioning hole that slides with the sliding cross bar, the sliding cross bar is passed through the positioning hole, the top of the positioning seat is provided with a first locking hole connected to the positioning hole, the upper end of the sliding cross bar is provided with a plurality of second locking holes that are evenly distributed along the length direction of the sliding cross bar and adapted to the first locking hole, the upper end of the positioning seat is provided with a spring pull pin, the spring pull pin is connected to a locking device that can control the extension and retraction of the lock head of the spring pull pin so that the lock head is pushed into the first locking hole and the second locking hole in turn or the lock head is withdrawn.
[0015] When the backrest seat needs to be adjusted for front and back position, the sliding cross bar slides in the positioning hole. When the backrest seat is adjusted for front and back position, the locking head of the spring pull pin is controlled to extend through the locking device so that the locking head is pushed into the first locking hole and the second locking hole in turn to lock and fix the sliding cross bar on the positioning seat, ensuring that the backrest seat is fixed and no longer slides. When the backrest seat needs to be adjusted for front and back position, the locking head of the spring pull pin is controlled to retract through the locking device so that the locking head is withdrawn from the second locking hole and the first locking hole in turn to unlock the sliding cross bar and the positioning seat.
[0016] In the above-mentioned knee joint seat with knee adjustment auxiliary seat, the locking device includes a brake handle arranged on a side armrest upright, and the brake handle is linked to the lock head of the spring pull pin through a brake mechanism.
[0017] The brake handle is fixed on the handrail upright pole on the side close to the human hand for easy operation. When the brake handle is grasped, the brake mechanism can be used to control the locking head of the spring puller pin to retract so that the locking head is withdrawn from the second locking hole and the first locking hole in turn. When the brake handle is released, the brake mechanism can be used to control the locking head of the spring puller pin to extend so that the locking head is pushed into the first locking hole and the second locking hole in turn.
[0018] In the above-mentioned knee joint seat with knee adjustment auxiliary seat, the synchronous sliding structure includes a synchronous sliding seat, a plurality of synchronous pulleys are provided at the bottom end of the synchronous sliding seat, and the bottom end of the manual hydraulic lifting rod is connected to the top end of the synchronous sliding seat.
[0019] When the backrest seat slides forward and backward to adjust the front and rear position, the synchronous sliding seat can slide forward and backward following the backrest seat so that the manual hydraulic lifting rod moves forward and backward following the backrest seat.
[0020] A knee joint seat adjustment auxiliary seat assembly includes a lifting platform with steps, a knee joint seat adjustment auxiliary seat is provided on the lifting platform, a backrest seat and a foot fixing device arranged on the front side of the backrest seat are provided on the lifting platform, a doctor's seat is provided on the front side of the lifting platform, the doctor's seat is a foldable seat, and a seat storage structure is provided in the lifting platform.
[0021] The lifting platform is used to elevate the patient's knee joint to facilitate manual treatment by the doctor. The steps on the lifting platform are convenient for the patient to get on and off the lifting platform. The foot fixation device on the lifting platform is used to fix the patient's affected limb and foot to prevent the foot from moving. The doctor's chair on which the doctor sits can be stored in the lifting platform. The doctor's chair is easy to use and can be stored conveniently, which can effectively save space.
[0022] In the above-mentioned knee joint seat knee adjustment auxiliary seat assembly, the seat storage structure includes a storage groove arranged on the front side of the lifting platform, and drawer rails distributed along the front and rear directions of the lifting platform are respectively provided on both sides of the bottom of the storage groove. A storage drawer is provided in the storage groove, and a number of storage pulleys slidingly connected to the corresponding side drawer rails are respectively provided on both sides of the bottom end of the storage drawer. The doctor's seat is fixedly connected to the storage drawer, and a handle is provided on the front side of the storage drawer. The storage pulley is a gravity self-locking wheel.
[0023] When the doctor needs to perform manual therapy, he / she can pull out the storage drawer through the handle and then unfold the doctor's chair. When the doctor finishes the treatment, he / she can fold the doctor's chair and push the storage drawer back. The doctor's chair is easy to use and can be stored conveniently, which can effectively save space.
[0024] In the above-mentioned knee joint seat knee adjustment auxiliary seat assembly, the foot fixing device includes a pair of fixed foot covers fixedly connected to the lifting platform, and the ankles of the fixed foot covers are provided with fixed buckles.
[0025] After the patient takes a seat on a reclining chair, the affected foot is placed into the fixed foot sleeve. The fixed buckle at the ankle of the fixed foot sleeve is used to fix the patient's affected foot to prevent the foot from moving.
[0026] Compared with existing technologies, the advantages of this utility model are: 1. The reclining chair can adapt to the needs of patients of various body sizes, ensuring that the patient's thighs are parallel to the ground and the knees are at a 90-degree angle. 2. The reclining chair does not slip, ensuring the doctor's treatment effect. 3. The doctor's chair is convenient to use and can be stored into the raised platform, which is convenient and effectively saves space. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the overall structure provided by the utility model;
[0028] Figure 2 It is a side view provided by the utility model;
[0029] Figure 3 It is a structural diagram of a backrest seat;
[0030] Figure 4 It is a structural diagram of the front and rear position adjustment mechanism;
[0031] Figure 5 It is a structural diagram of the locking device.
[0032] In the figure, there are a backrest seat 1, a seat lifting adjustment mechanism 2, a front and rear position adjustment mechanism 3, an armrest upright 4, an armrest 5, a sliding connection structure 6, a manual hydraulic lifting rod 7, a sliding clamp 8, a clamp mounting groove 9, a sliding track 10, a sliding cross bar 11, a synchronous sliding structure 12, a sliding positioning device 13, a connecting block 14, a positioning seat mounting groove 15, a positioning seat 16, a positioning hole 17, a first locking hole 18, a second locking hole 19, a spring pull pin 20, a lock head 21, a locking device 22, a brake handle 23, a brake mechanism 24, a synchronous sliding seat 25, a synchronous pulley 26, a step 27, a lifting platform 28, a foot fixing device 29, a doctor's chair 30, a seat storage structure 31, a storage groove 32, a drawer track 33, a storage drawer 34, a handle 35, a storage pulley 36, a fixed foot cover 37, and a fixed buckle 38. DETAILED DESCRIPTION
[0033] like Figures 1-4 As shown, a knee joint seat adjustment auxiliary seat includes a backrest seat 1, a seat lifting adjustment mechanism 2 is provided at the bottom of the backrest seat 1, and the seat lifting adjustment mechanism 2 is connected to a front and rear position adjustment mechanism 3 that can adjust the front and rear position of the backrest seat 1.
[0034] In the present invention, the patient takes a sitting position on the backrest seat 1, and the seat height and the front and back position of the patient can be adjusted respectively through the seat lifting adjustment mechanism 2 and the front and back position adjustment mechanism 3, which can ensure that the patient's thighs are parallel to the ground and the knee joints are at 90 degrees. It can adapt to the needs of patients of various body sizes, and the backrest seat 1 will not slide, thereby ensuring the treatment effect.
[0035] Specifically, combined Figure 1-Figure 3 As shown, the seat lifting and adjusting mechanism 2 includes four armrest uprights 4 respectively arranged on the four side corners of the back seat 1 and arranged vertically, and an armrest 5 is provided at the upper ends of the two armrest uprights 4 on the same side of the back seat 1. The back seat 1 and the armrest uprights 4 are connected by a sliding connection structure 6. The bottom end of the back seat 1 is provided with a manual hydraulic lifting rod 7 that enables the back seat 1 to slide vertically on the armrest uprights 4.
[0036] The armrest 5 is used to support patients who have difficulty standing when they get up. The backrest seat 1 is connected to the armrest upright 4 by a sliding connection structure 6. The backrest seat 1 can slide smoothly on the armrest upright 4. The manual hydraulic lifting rod 7 at the bottom end of the backrest seat 1 can manually drive the backrest seat 1 to slide vertically on the armrest upright 4 to flexibly adjust the height of the backrest seat 1.
[0037] Specifically, combined Figure 3 and Figure 4As shown, the sliding connection structure 6 includes a sliding hoop 8 which is sleeved on the armrest upright 4 and slidably connected to the armrest upright 4. A hoop mounting groove 9 is provided on the side corner of the backrest seat 1, and the sliding hoop 8 is fixedly connected in the hoop mounting groove 9.
[0038] The sliding clamp 8 is fixed to the side corner of the backrest seat 1 through the clamp mounting groove 9. The sliding clamp 8 is sleeved on the armrest upright 4 and is slidably connected between the armrest upright 4, ensuring that the backrest seat 1 can slide vertically on the armrest upright 4 to achieve height adjustment of the backrest seat 1.
[0039] Specifically, combined Figure 3 and Figure 4 As shown, the front and rear position adjustment mechanism 3 includes sliding tracks 10 arranged on both sides of the bottom end of the backrest seat 1, and the sliding tracks 10 are distributed along the front and rear directions of the backrest seat 1. A sliding cross bar 11 is slidably connected in the sliding track 10, and the two ends of the sliding cross bar 11 are respectively connected to the lower ends of the two armrest uprights 4 on the same side of the backrest seat 1. A synchronous sliding structure 12 is provided at the bottom of the manual hydraulic lifting rod 7, which enables the manual hydraulic lifting rod 7 to slide with the backrest seat 1. A sliding positioning device 13 is also provided between the sliding track 10 on one side and the sliding cross bar 11.
[0040] The two ends of the sliding cross bar 11 are detachably connected to the lower ends of the two armrest uprights 4 on the same side of the backrest seat 1 through connecting blocks 14 respectively.
[0041] The sliding cross bars 11 on both sides of the bottom of the backrest seat 1 can slide in their respective sliding tracks 10 along the front and rear directions of the backrest seat 1 to realize flexible adjustment of the front and rear position of the backrest seat 1. When the backrest seat 1 slides back and forth to adjust the front and rear position, the manual hydraulic lifting rod 7 can be synchronized with the movement of the backrest seat 1 through the synchronous sliding structure 12. When the front and rear position of the backrest seat 1 is adjusted, the sliding positioning device 13 between the sliding track 10 and the sliding cross bar 11 can position the sliding cross bar 11 in the sliding track 10 to ensure that the backrest seat 1 is fixed and no longer slides.
[0042] Specifically, combined Figure 3-Figure 5As shown, the sliding positioning device 13 includes a positioning seat mounting groove 15 arranged on the sliding rail 10, a positioning seat 16 is embedded in the positioning seat mounting groove 15, and the positioning seat 16 is provided with a positioning hole 17 that slides with the sliding cross bar 11. The sliding cross bar 11 is passed through the positioning hole 17, and the top of the positioning seat 16 is provided with a first locking hole 18 connected to the positioning hole 17. The upper end of the sliding cross bar 11 is provided with a plurality of second locking holes 19 that are evenly distributed along the length direction of the sliding cross bar 11 and adapted to the first locking hole 18. The upper end of the positioning seat 16 is provided with a spring pulling pin 20, and the spring pulling pin 20 is connected to a locking device 22 that can control the extension and retraction of a lock head 21 of the spring pulling pin 20 so that the lock head 21 is sequentially pushed into the first locking hole 18 and the second locking hole 19 or the lock head 21 is withdrawn.
[0043] The sliding cross bar 11 is inserted into the positioning hole 17 of the positioning seat 16. When the backrest seat 1 is adjusted to the front and rear position, the sliding cross bar 11 slides in the positioning hole 17. When the front and rear position of the backrest seat 1 is adjusted, the locking device 22 controls the locking head 21 of the spring pulling pin 20 to extend so that the locking head 21 is pushed into the first locking hole 18 and the second locking hole 19 in turn to achieve the locking and fixing of the sliding cross bar 11 on the positioning seat 16, ensuring that the backrest seat 1 is fixed and no longer slides. When the front and rear position of the backrest seat 1 needs to be adjusted, the locking device 22 controls the locking head 21 of the spring pulling pin 20 to contract so that the locking head 21 is withdrawn from the second locking hole 19 and the first locking hole 18 in turn to unlock the sliding cross bar 11 and the positioning seat 16.
[0044] Specifically, combined Figure 3-Figure 5 As shown, the locking device 22 includes a brake handle 23 provided on one side of the handrail upright 4 , and the brake handle 23 is linked to the lock head 21 of the spring pull pin 20 through a brake mechanism 24 .
[0045] The brake handle 23 is fixed on the handrail upright 4 on the side close to the human hand for easy operation. When the brake handle 23 is grasped, the brake mechanism 24 can be used to control the locking head 21 of the spring pulling pin 20 to retract so that the locking head 21 is withdrawn from the second locking hole 19 and the first locking hole 18 in turn. When the brake handle 23 is released, the brake mechanism 24 can be used to control the locking head 21 of the spring pulling pin 20 to extend so that the locking head 21 is pushed into the first locking hole 18 and the second locking hole 19 in turn.
[0046] Specifically, combined Figure 1 and Figure 3 As shown, the synchronous sliding structure 12 includes a synchronous sliding seat 25 , a plurality of synchronous pulleys 26 are provided at the bottom end of the synchronous sliding seat 25 , and the bottom end of the manual hydraulic lifting rod 7 is connected to the top end of the synchronous sliding seat 25 .
[0047] When the backrest seat 1 slides forward and backward to adjust its front and rear position, the synchronous sliding seat 25 can slide forward and backward following the backrest seat 1 so that the manual hydraulic lifting rod 7 moves forward and backward following the backrest seat 1 .
[0048] like Figure 1 and Figure 2 As shown, a knee joint seat knee adjustment auxiliary seat assembly includes a lifting platform 28 with a step 27, a knee joint seat knee adjustment auxiliary seat is provided on the lifting platform 28, the backrest seat 1 and the foot fixing device 29 arranged on the front side of the backrest seat 1 are provided on the lifting platform 28, a doctor's seat 30 is provided on the front side of the lifting platform 28, the doctor's seat 30 is a foldable seat, and a seat storage structure 31 is provided in the lifting platform 28.
[0049] The lifting platform 28 is used to lift the patient's knee joint to facilitate the doctor's manual treatment. The steps 27 on the lifting platform 28 are convenient for the patient to get on and off the lifting platform 28. The foot fixing device 29 on the lifting platform 28 is used to fix the patient's affected limb foot to prevent the foot from moving. The doctor's chair 30 on which the doctor sits can be stored in the lifting platform 28. The doctor's chair 30 is easy to use and can be stored conveniently, which can effectively save space.
[0050] Specifically, combined Figure 1 and Figure 2 As shown, the seat storage structure 31 includes a storage groove 32 arranged on the front side of the lifting platform 28, and drawer rails 33 distributed along the front and rear directions of the lifting platform 28 are respectively provided on both sides of the bottom of the storage groove 32. A storage drawer 34 is provided in the storage groove 32, and a number of storage pulleys 36 slidingly connected to the corresponding side drawer rails 33 are respectively provided on both sides of the bottom end of the storage drawer 34. The doctor's chair 30 is fixedly connected to the storage drawer 34, and a handle 35 is provided on the front side of the storage drawer 34.
[0051] The storage drawer 34 can slide back and forth in the storage groove 32 through the sliding cooperation between the storage pulley 36 at the bottom and the drawer rail 33. When the doctor needs to perform manual treatment, the storage drawer 34 is pulled out by the handle 35 and then the doctor's chair 30 is unfolded. When the doctor finishes the treatment, the doctor's chair 30 is folded and the storage drawer 34 is pushed back. The doctor's chair 30 is easy to use and can be stored conveniently, which can effectively save space.
[0052] Preferably, combined Figure 1 and Figure 2 As shown, the storage pulley 36 is a gravity self-locking wheel.
[0053] The storage pulley 36 is a gravity self-locking wheel. When the doctor sits on the doctor's chair 30, the storage pulley 36 at the bottom of the storage drawer 34 will be gravity-locked to prevent the doctor's chair 30 from sliding and affecting the doctor's manual treatment.
[0054] Specifically, combined Figure 1 and Figure 2 As shown, the foot fixing device 29 includes a pair of fixed foot covers 37 fixedly connected to the lifting platform 28, and a fixed buckle 38 is provided at the ankle of the fixed foot cover 37.
[0055] After the patient takes a seat on the backrest chair 1, he puts the affected limb foot into the fixed foot cover 37. The fixed buckle 38 at the ankle of the fixed foot cover 37 is used to fix the patient's affected limb foot to prevent the foot from moving.
[0056] The working principle of the present invention is as follows: the storage drawer 34 is pulled out by the handle 35 and then the doctor's chair 30 is unfolded, the doctor sits on the doctor's chair 30, the patient walks up the raised platform 28 from the steps 27 and sits on the backrest seat 1, the patient's affected limb foot is placed in the fixed foot cover 37 and fixed by the fixed buckle 38;
[0057] The doctor and the patient face each other and adjust the height of the backrest seat 1 by the manual hydraulic lifting rod 7 and the front and rear position of the backrest seat 1 by sliding the sliding cross bar 11 in the sliding track 10. After the front and rear position of the patient is adjusted, the backrest seat 1 is fixed by the locking device 22. The adjustment of the height and front and rear position of the backrest seat 1 ensures that the patient's thigh is parallel to the ground and the knee joint is at 90 degrees.
[0058] The doctor places the thumbs of both hands on the knees of the patient's affected limb to ensure that the lower edge of the patella is fixed, and the other four fingers embrace the popliteal fossa to fix the tibiofemoral joint. The patient is asked to look forward and slowly stand up to the extreme extension position of the knee joint, and then slowly sit down. Repeat this three times. Repeat the same operation on the healthy limb. After completing the knee adjustment operation, unfasten the fixing buckle 38 and ask the patient to walk down the step 27 and raise the platform 28.
[0059] After the doctor finishes the treatment, he / she folds the doctor's chair 30 and pushes the storage drawer 34 back.
[0060] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
[0061] Although this article uses more backrest seat 1, seat lifting adjustment mechanism 2, front and rear position adjustment mechanism 3, armrest upright 4, armrest 5, sliding connection structure 6, manual hydraulic lifting rod 7, sliding clamp 8, clamp mounting groove 9, sliding track 10, sliding cross bar 11, synchronous sliding structure 12, sliding positioning device 13, connecting block 14, positioning seat mounting groove 15, positioning seat 16, positioning hole 17, first locking hole 18, second locking hole 19, spring pull pin 20, lock head 21, locking device 22, The brake handle 23, brake mechanism 24, synchronous sliding seat 25, synchronous pulley 26, step 27, lifting platform 28, foot fixing device 29, doctor's chair 30, chair storage structure 31, storage slot 32, drawer rail 33, storage drawer 34, handle 35, storage pulley 36, fixed foot cover 37, fixed buckle 38, etc., these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.
Claims
1. A knee joint seat with knee adjustment auxiliary seat, characterized in that: The backrest seat (1) comprises a seat lifting adjustment mechanism (2) provided at the bottom of the backrest seat (1), and the seat lifting adjustment mechanism (2) is connected to a front-back position adjustment mechanism (3) capable of adjusting the front-back position of the backrest seat (1); The seat lifting and adjusting mechanism (2) comprises four armrest uprights (4) respectively arranged on the four side corners of the backrest seat (1) and arranged vertically, an armrest (5) is provided at the upper ends of the two armrest uprights (4) on the same side of the backrest seat (1), the backrest seat (1) and the armrest uprights (4) are connected via a sliding connection structure (6), and a manual hydraulic lifting rod (7) is provided at the bottom end of the backrest seat (1) to enable the backrest seat (1) to slide vertically on the armrest uprights (4); The sliding connection structure (6) includes a sliding hoop (8) sleeved on the armrest upright (4) and slidably connected to the armrest upright (4); a hoop mounting groove (9) is provided on the side corner of the backrest seat (1); and the sliding hoop (8) is fixedly connected in the hoop mounting groove (9); The front and rear position adjustment mechanism (3) includes sliding rails (10) arranged on both sides of the bottom end of the backrest seat (1), the sliding rails (10) are distributed along the front and rear direction of the backrest seat (1), a sliding cross bar (11) is slidably connected in the sliding rails (10), and the two ends of the sliding cross bar (11) are respectively connected to the lower ends of the two armrest uprights (4) on the same side of the backrest seat (1), and the bottom of the manual hydraulic lifting rod (7) is provided with a synchronous sliding structure (12) that enables the manual hydraulic lifting rod (7) to slide along the backrest seat (1), and a sliding positioning device (13) is also provided between the sliding rail (10) and the sliding cross bar (11) on one side.
2. The knee joint seat adjustment auxiliary seat according to claim 1, characterized in that: The sliding positioning device (13) includes a positioning seat installation groove (15) provided on the sliding rail (10), a positioning seat (16) is embedded in the positioning seat installation groove (15), the positioning seat (16) is provided with a positioning hole (17) that slides with the sliding cross bar (11), the sliding cross bar (11) is passed through the positioning hole (17), the top of the positioning seat (16) is provided with a first locking hole (18) that is connected to the positioning hole (17), and the sliding cross bar (11) is provided with a first locking hole (18) that is connected to the positioning hole (17). The upper end of the rod (11) is provided with a plurality of second locking holes (19) evenly distributed along the length direction of the sliding cross bar (11) and adapted to the first locking hole (18). The upper end of the positioning seat (16) is provided with a spring pull pin (20). The spring pull pin (20) is connected to a locking device (22) capable of controlling the spring pull pin (20) to extend and retract the lock head (21) so that the lock head (21) is sequentially pushed into the first locking hole (18) and the second locking hole (19) or the lock head (21) is withdrawn.
3. The knee joint seat adjustment auxiliary seat according to claim 2, characterized in that: The locking device (22) includes a brake handle (23) arranged on a side armrest upright (4), and the brake handle (23) is linked to the lock head (21) of the spring pull pin (20) through a brake mechanism (24).
4. The knee joint seat adjustment auxiliary seat according to claim 1, characterized in that: The synchronous sliding structure (12) includes a synchronous sliding seat (25), a plurality of synchronous pulleys (26) are provided at the bottom end of the synchronous sliding seat (25), and the bottom end of the manual hydraulic lifting rod (7) is connected to the top end of the synchronous sliding seat (25).
5. A knee joint seat adjustment auxiliary seat assembly, characterized in that: The invention comprises a lifting platform (28) with steps (27), the lifting platform (28) is provided with a knee joint seat adjustment auxiliary seat as described in any one of claims 1 to 4, the lifting platform (28) is provided with the backrest seat (1) and a foot fixing device (29) arranged on the front side of the backrest seat (1), the front side of the lifting platform (28) is provided with a doctor's seat (30), the doctor's seat (30) is a foldable seat, and the lifting platform (28) is provided with a seat storage structure (31).
6. The knee joint seat adjustment auxiliary seat assembly according to claim 5, characterized in that: The seat storage structure (31) includes a storage groove (32) arranged on the front side of the lifting platform (28), and drawer rails (33) distributed along the front and rear directions of the lifting platform (28) are respectively provided on both sides of the bottom of the storage groove (32). A storage drawer (34) is provided in the storage groove (32), and a plurality of storage pulleys (36) slidably connected to the corresponding side drawer rails (33) are respectively provided on both sides of the bottom end of the storage drawer (34). The doctor's chair (30) is fixedly connected to the storage drawer (34), and a handle (35) is provided on the front side of the storage drawer (34). The storage pulley (36) is a gravity self-locking wheel.
7. The knee joint seat adjustment auxiliary seat assembly according to claim 6, characterized in that: The foot fixing device (29) comprises a pair of fixed foot covers (37) fixedly connected to the lifting platform (28), and the ankles of the fixed foot covers (37) are provided with fixed buckles (38).