Dressing change table for central venous catheter

Abstract

The utility model relates to the technical field of medical instruments, in particular to a central venous catheter dressing change table which comprises a supporting frame, a table top and a lifting mechanism are fixedly connected to the supporting frame, and the lifting mechanism is arranged on the table top in a penetrating mode. The self-adaptive adjusting mechanism is connected to the lifting mechanism in a transmission mode, the self-adaptive adjusting mechanism is located above the table top, and the self-adaptive adjusting mechanism is used for conducting deflection and / or pitching adjustment according to the comfortable placing posture of the arm of the patient; and the arc-shaped hand support is arranged on the self-adaptive adjusting mechanism in a connecting manner. According to the arm support, after the arm of a patient with catheterization is placed in the arc-shaped hand support, the height of the arc-shaped hand support is adjusted according to the height of the arm of the patient, and the arc-shaped hand support can be deflected and / or adjusted in a pitching mode along with the arm of the patient, so that the arm support of the patient can be placed in a comfortable posture; and the comfort of the maintenance process of the central venous catheter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a central venous catheter dressing table. Background Art

[0002] Central venous catheters: PICC, CVC and infusion tubes are increasingly accepted by patients, and more and more patients are undergoing catheterization. Central venous catheters are placed in the patient's veins for a long time, which greatly increases the risk of wound infection in patients. In order to prevent venous infection and inflammation, central venous catheters must be maintained, cleaned and disinfected during daily care; when maintaining, cleaning and disinfecting central venous catheters, patients need to place the arm with the catheter in a designated position on the dressing table and twist the arm outward to expose the catheter position. The position of the patient's arm on the existing dressing table is set in parallel, resulting in the patient being weak and only being able to place the arm with the catheter in parallel on the dressing table. The maintenance, cleaning and disinfection of central venous catheters takes a long time, and the arm is placed in parallel for a long time, causing extreme discomfort to the patient, thereby demanding improved comfort during the central venous catheter maintenance process.

[0003] In the prior art, for example, utility model CN214909751U is a dressing table dedicated to peripherally inserted central venous catheters. In this patent, the patient places the arm with the PICC catheter inserted in the arm placement groove on the second table to expose the catheter position. However, the arm placement grooves are arranged in parallel, resulting in the patient, if weak, being able to only place the catheterized arm in parallel in the arm placement groove. The maintenance, cleaning and disinfection of the central venous catheter requires a long time, and the arm being placed in parallel for a long time causes extreme discomfort to the patient.

[0004] Therefore, how to improve the comfort of the central venous catheter maintenance process is an urgent problem to be solved in this technical field. Utility Model Content

[0005] In view of the problem that the position of the patient's arms on the current dressing change table is set in parallel, the patient can only place the catheter-inserted arm parallel to the dressing change table when he is weak. The maintenance, cleaning and disinfection of the central venous catheter requires a long time, and the arm is placed in parallel for a long time, causing extreme discomfort to the patient. The present invention provides a central venous catheter dressing change table in which the patient's catheter-inserted arm is placed in an arc-shaped hand rest, and the height of the arc-shaped hand rest is adjusted according to the height of the patient's arm. The arc-shaped hand rest can be deflected and / or pitched along with the patient's arm, so that the patient's arm is set in a comfortable placement posture, thereby improving the comfort of the central venous catheter maintenance process.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0007] A central venous catheter dressing table comprises a support frame, to which a tabletop is fixedly connected, and further comprises:

[0008] A lifting mechanism, the lifting mechanism being arranged on the table top;

[0009] An adaptive adjustment mechanism, the adaptive adjustment mechanism being transmission-connected to the lifting mechanism, the adaptive adjustment mechanism being located above the tabletop, and the adaptive adjustment mechanism being configured to perform deflection and / or pitch adjustment according to a comfortable placement posture of the patient's arm;

[0010] An arc-shaped hand rest is connected to the adaptive adjustment mechanism, and is used to place the patient's arm. When the patient's arm is placed in the arc-shaped hand rest, the adaptive adjustment mechanism is driven by the arc-shaped hand rest to perform deflection and / or pitch adjustment, and the patient's arm can be adjusted to a comfortable placement posture.

[0011] As a preferred embodiment, the lifting mechanism includes:

[0012] A connecting tube, the connecting tube is connected to the bottom end of the table top, and a lifting screw is connected to the connecting tube through bearing I;

[0013] A driving assembly, the driving assembly being connected to the connecting cylinder and being in driving connection with the lifting screw;

[0014] A connecting column, wherein the bottom end of the connecting column is integrally provided with an internal threaded tube, the internal threaded tube is threadedly connected to the lifting screw, the outer wall of the internal threaded tube is slidably connected to the inner wall of the connecting tube, and the adaptive adjustment mechanism is arranged at the top end of the connecting column.

[0015] As a preferred embodiment, the drive assembly includes:

[0016] A housing, the housing being connected to the bottom end of the connecting tube, a shaft being connected to the housing via a bearing II, a crank being connected to each end of the shaft, and a pedal being rotatably connected to the crank;

[0017] Bevel gear I, the bevel gear I is connected to the shaft and is located in the housing;

[0018] Bevel gear II, the bevel gear II is connected to the lifting screw, and the bevel gear II is meshed with the bevel gear I.

[0019] As a preferred embodiment, the adaptive adjustment mechanism includes:

[0020] A ball head seat, the ball head seat is fixedly connected to the connecting column;

[0021] A ball head, the ball head is loosely fitted in the ball head seat, a connecting arm is integrally provided on the ball head, and the connecting arm is fixedly connected to the middle position of the bottom end of the arc-shaped hand rest;

[0022] A limiting assembly is connected to the ball head seat, and the limiting assembly is used to limit the rotation of the ball head in the ball head seat.

[0023] As a preferred embodiment, the limiting component includes:

[0024] A limiting ring is provided on the connecting arm, and an arc-shaped abutting surface is provided on the inner bottom of the limiting ring, and the arc-shaped abutting surface is used to abut against the ball head. An adjusting cylinder is integrally provided at the bottom end of the limiting ring, and the adjusting cylinder is threadedly connected to the ball head seat, so that after the adjusting cylinder is tightened on the ball head seat, the arc-shaped abutting surface limits and fixes the ball head in the ball head seat.

[0025] As a preferred embodiment, a plurality of torsion bars are symmetrically connected to the peripheral wall of the limiting ring.

[0026] As a preferred embodiment, the outer wall of the internally threaded tube and the inner wall of the connecting tube are slidably connected in the following manner:

[0027] A plurality of sliding grooves are symmetrically provided on the outer wall of the internally threaded tube, and a plurality of limiting strips are symmetrically provided on the inner wall of the connecting tube. The limiting strips are slidably connected in the sliding grooves, and the outer wall of the internally threaded tube and the inner wall of the connecting tube are clearance-matched.

[0028] As a preferred embodiment, the bottom end of the bevel gear I is integrally provided with an annular boss, and a plurality of limiting holes are symmetrically opened on the outer wall of the annular boss. A handle bolt is connected through the shell, and a limiting cone is integrally provided at the end of the handle bolt, so that after the handle bolt is tightened, the limiting cone is engaged in the limiting hole.

[0029] As a preferred embodiment, a silicone pad is fixedly connected to the inner wall of the arc-shaped hand rest, and the silicone pad is used to fit against the patient's arm.

[0030] As a preferred embodiment, a limit plate is also integrally provided at the top of the table top, and the limit plate is provided corresponding to the top edge of the table top, and the limit plate is used to limit the range of movement of the instrument and / or medicine.

[0031] By adopting the above technology, compared with the prior art, the beneficial effects of the present invention are:

[0032] According to the utility model, after the patient's arm with the catheter is placed in the arc-shaped hand rest, the height of the arc-shaped hand rest is adjusted according to the height of the patient's arm, and the arc-shaped hand rest can be deflected and / or adjusted in pitch along with the patient's arm, so that the patient's arm rest is set in a comfortable placement posture, thereby improving the comfort of the central venous catheter maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a schematic diagram of the structure of this application;

[0035] Figure 2 This is a schematic diagram of the lifting mechanism structure of this application;

[0036] Figure 3 This is a connection diagram of the adaptive adjustment mechanism of this application;

[0037] Figure 4 This is a schematic diagram of the ball head connection for this application;

[0038] Figure 5 This is a schematic diagram of the limit assembly structure of this application;

[0039] Figure 6 This is a schematic diagram of the handle bolt structure of this application;

[0040] Markings in the figure: support frame 1, table top 2, limit plate 21, lifting mechanism 3, connecting tube 31, bearing I 32, lifting screw 33, drive assembly 34, housing 341, bearing II 342, shaft 343, crank 344, pedal 345, bevel gear I 346, bevel gear II 347, annular boss 348, limit hole 349, connecting column 35, internal threaded tube 36, slide groove 37, limit bar 38, adaptive adjustment mechanism 4, ball head seat 41, ball head 42, connecting arm 43, limit assembly 44, limit ring 441, arc-shaped abutment surface 442, adjustment tube 443, torsion bar 444, arc-shaped hand rest 5, silicone pad 51, handle bolt 6, limit cone 61. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0042] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0043] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0044] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0045] Examples, such as Figure 1-Figure 2 As shown,

[0046] A central venous catheter dressing table includes a support frame 1, a table top 2 is fixedly connected to the support frame 1, and further includes:

[0047] A lifting mechanism 3, the lifting mechanism 3 is provided on the table top 2;

[0048] An adaptive adjustment mechanism 4, the adaptive adjustment mechanism 4 being transmission-connected to the lifting mechanism 3, the adaptive adjustment mechanism 4 being located above the tabletop 2, and the adaptive adjustment mechanism 4 being configured to perform deflection and / or pitch adjustment according to a comfortable placement posture of the patient's arm;

[0049] The arc-shaped hand rest 5 is connected to the adaptive adjustment mechanism 4. The arc-shaped hand rest 5 is used to place the patient's arm, so that when the patient's arm is placed in the arc-shaped hand rest 5, the adaptive adjustment mechanism 4 is driven by the arc-shaped hand rest 5 to perform deflection and / or pitch adjustment, and the patient's arm can be adjusted to a comfortable placement posture.

[0050] When maintaining the central venous catheter, the patient places the arm with the catheter on the arc-shaped hand rest 5, and then adjusts the height of the arc-shaped hand rest 5 through the lifting mechanism 3 so that the height of the arc-shaped hand rest 5 is adapted to the height of the patient's arm. Then, the patient's arm drives the movable arc to deflect and / or pitch adjustment, and the movable arc-shaped hand rest 5 along with the patient's arm drives the adaptive adjustment mechanism 4 to deflect and / or pitch adjustment until the patient's arm is set to a comfortable placement posture. Then, the adaptive adjustment mechanism 4 is locked so that the posture of the arc-shaped hand rest 5 on the adaptive adjustment mechanism 4 is fixed, and the patient's arm with the catheter can be maintained in a comfortable posture. Then, the medical staff maintains the central venous catheter on the patient's arm. In this technical solution, after the patient's arm with the catheter is placed in the arc-shaped hand rest 5, the height of the arc-shaped hand rest 5 is adjusted according to the height of the patient's arm, and the arc-shaped hand rest 5 can be deflected and / or pitched along with the patient's arm, so that the patient's arm is set to a comfortable placement posture, thereby improving the comfort of the central venous catheter maintenance process.

[0051] As a preferred embodiment, Figure 2 As shown, the lifting mechanism 3 includes:

[0052] A connecting tube 31 is connected to the bottom end of the table top 2, and a lifting screw 33 is connected to the connecting tube 31 via a bearing I 32;

[0053] A driving assembly 34 , the driving assembly 34 being connected to the connecting cylinder 31 and being in transmission connection with the lifting screw 33 ;

[0054] The connecting column 35 has an internal threaded tube 36 integrally provided at the bottom end thereof. The internal threaded tube 36 is threadedly connected to the lifting screw 33 . The outer wall of the internal threaded tube 36 is slidably connected to the inner wall of the connecting tube 31 . The adaptive adjustment mechanism 4 is provided at the top end of the connecting column 35 .

[0055] When adjusting the height of the arc-shaped palm rest 5 on the desktop 2, the driving assembly 34 drives the lifting screw 33 to rotate clockwise or counterclockwise, and the bearing I 32 limits the movable position of the lifting screw 33 in the connecting tube 31. When the lifting screw 33 rotates clockwise, the internal threaded tube 36 slides downward in the connecting tube 31, so that the connecting column 35 drives the adaptive adjustment mechanism 4 and the arc-shaped palm rest 5 to descend on the desktop 2; when the lifting screw 33 rotates counterclockwise, the internal threaded tube 36 slides upward in the connecting tube 31, so that the connecting column 35 drives the adaptive adjustment mechanism 4 and the arc-shaped palm rest 5 to rise on the desktop 2.

[0056] As a preferred embodiment, Figure 2 As shown, the drive assembly 34 includes:

[0057] A housing 341 is connected to the bottom end of the connecting tube 31 . A shaft 343 is connected to the housing 341 via a bearing II 342 . Cranks 344 are connected to both ends of the shaft 343 . Pedals 345 are rotatably connected to the cranks 344 .

[0058] Bevel gear I 346 , the bevel gear I 346 is connected to the shaft 343 , and the bevel gear I 346 is located in the housing 341 ;

[0059] Bevel gear II 347 , the bevel gear II 347 is connected to the lifting screw 33 , and the bevel gear II 347 is engaged with the bevel gear I 346 .

[0060] When adjusting the height of the arc-shaped hand rest 5 on the table top 2, the medical staff drives the shaft 343 to rotate clockwise or counterclockwise through the foot pedal 345, and the bearing II 342 limits the position of the shaft 343 on the housing 341, so that the bevel gear I 346 and the bevel gear II 347 are kept in a meshing state; when the medical staff drives the shaft 343 to rotate clockwise through the foot pedal 345, the bevel gear I 346 drives the bevel gear II 347 to rotate clockwise, and the bevel gear II 347 drives the lifting screw 33 to rotate clockwise, so that the inner The threaded tube 36 slides downward in the connecting tube 31, and the connecting column 35 drives the adaptive adjustment mechanism 4 and the arc-shaped hand rest 5 to descend on the desktop 2; when the medical staff drives the shaft 343 to rotate counterclockwise through the foot pedal 345, the bevel gear I 346 drives the bevel gear II 347 to rotate counterclockwise, and the bevel gear II 347 drives the lifting screw 33 to rotate counterclockwise, so that the internal threaded tube 36 slides upward in the connecting tube 31, and the connecting column 35 drives the adaptive adjustment mechanism 4 and the arc-shaped hand rest 5 to rise on the desktop 2.

[0061] As a preferred embodiment, Figure 3-Figure 4 As shown, the adaptive adjustment mechanism 4 includes:

[0062] A ball head seat 41, wherein the ball head seat 41 is fixedly connected to the connecting post 35;

[0063] A ball head 42 is provided in the ball head seat 41 with a clearance fit, and a connecting arm 43 is integrally provided on the ball head 42, and the connecting arm 43 is fixedly connected to the middle position of the bottom end of the arc-shaped hand rest 5;

[0064] The limiting assembly 44 is connected to the ball head seat 41 , and the limiting assembly 44 is used to limit the rotation of the ball head 42 in the ball head seat 41 .

[0065] When the patient's arm with the tube is adjusted to a comfortable placement posture on the arc-shaped hand rest 5, the connection between the limit component 44 and the ball head seat 41 is disassembled, and the limit component 44's restriction on the rotation of the ball head 42 in the ball head seat 41 is cancelled. Then the patient's arm drives the arc-shaped hand rest 5 to deflect and / or adjust the pitch. The arc-shaped hand rest 5 drives the ball head 42 to move through the connecting arm 43, so that the ball head 42 rotates accordingly in the ball head seat 41 along with the movement of the patient's arm until the patient's arm is set to a comfortable placement posture. Then the limit component 44 is connected to the ball head seat 41, and the limit component 44 is used to limit the rotation of the ball head 42 in the ball head seat 41, and the posture of the arc-shaped hand rest 5 is fixed, so that the patient's arm with the tube can be maintained in a comfortable posture. Then the medical staff maintains the central venous catheter on the patient's arm.

[0066] As a preferred embodiment, Figure 5 As shown, the limiting assembly 44 includes:

[0067] A limiting ring 441 is provided on the connecting arm 43, and an arc-shaped abutting surface 442 is provided on the inner bottom of the limiting ring 441, and the arc-shaped abutting surface 442 is used to abut against the ball head 42. An adjusting cylinder 443 is integrally provided at the bottom end of the limiting ring 441, and the adjusting cylinder 443 is threadedly connected to the ball head seat 41, so that after the adjusting cylinder 443 is tightened on the ball head seat 41, the arc-shaped abutting surface 442 limits and fixes the ball head 42 in the ball head seat 41.

[0068] When the patient's intubated arm is adjusted to a comfortable placement posture on the arc-shaped hand support 5, the adjusting cylinder 443 is loosened counterclockwise so that the adjusting cylinder 443 is raised upward through the threaded connection with the ball head seat 41, so that the arc-shaped abutting surface 442 of the limiting ring 441 is away from the ball head 42, and the ball head 42 can rotate in the ball head seat 41; after the patient's arm is set to a comfortable placement posture, the adjusting cylinder 443 is tightened clockwise so that the adjusting cylinder 443 is lowered downward through the threaded connection with the ball head seat 41, and the arc-shaped abutting surface 442 of the limiting ring 441 abuts against the ball head 42, and the ball head 42 is limited and fixed in the ball head seat 41 through the arc-shaped abutting surface 442, so that the ball head 42 cannot rotate in the ball head seat 41, thereby fixing the posture of the arc-shaped hand support 5, so that the patient's intubated arm can maintain a comfortable posture.

[0069] Further, such as Figure 5 As shown, a plurality of torsion bars 444 are symmetrically connected to the peripheral wall of the limiting ring 441 .

[0070] When tightening the adjusting cylinder 443 clockwise, a large force needs to be applied so that the arc-shaped abutment surface 442 can limit and fix the ball head 42 in the ball head seat 41; therefore, multiple torsion bars 444 are symmetrically connected on the peripheral wall of the limiting ring 441 to facilitate medical staff to limit and fix the ball head 42 in the ball head seat 41.

[0071] As a preferred embodiment, Figure 2 As shown, the outer wall of the internally threaded tube 36 and the inner wall of the connecting tube 31 are slidably connected in the following manner:

[0072] A plurality of slide grooves 37 are symmetrically provided on the outer wall of the internal threaded tube 36 , and a plurality of limit bars 38 are symmetrically provided on the inner wall of the connecting tube 31 . The limit bars 38 are slidably connected in the slide grooves 37 , and the outer wall of the internal threaded tube 36 is gap-fitted with the inner wall of the connecting tube 31 .

[0073] The outer wall of the internal threaded tube 36 is clearance-matched with the inner wall of the connecting tube 31 to prevent the internal threaded tube 36 from being offset in the connecting tube 31, and the cooperation between the limit bar 38 and the slide groove 37 restricts the internal threaded tube 36 from rotating in the connecting tube 31, so that when the lifting screw rod 33 rotates clockwise or counterclockwise, the lifting screw rod 33 drives the internal threaded tube 36 to rise or fall in the connecting tube 31, thereby realizing the height adjustment of the arc-shaped hand rest 5.

[0074] As a preferred embodiment, Figure 2 and Figure 6As shown, the bottom end of the bevel gear I 346 is integrally provided with an annular boss 348, and a plurality of limiting holes 349 are symmetrically opened on the outer wall of the annular boss 348. A handle bolt 6 is connected through the shell 341, and a limiting cone 61 is integrally provided at the end of the handle bolt 6, so that after the handle bolt 6 is tightened, the limiting cone 61 is engaged in the limiting hole 349.

[0075] After the height of the arc-shaped hand rest 5 is adjusted to the right position, if the medical staff accidentally touches the foot pedal 345 to drive the shaft rod 343 to rotate, the height of the arc-shaped hand rest 5 will change, resulting in a safety hazard during the maintenance of the central venous catheter; therefore, an annular boss 348 is integrally provided at the bottom end of the bevel gear I 346, and a plurality of limiting holes 349 are symmetrically provided on the outer wall of the annular boss 348. When adjusting the height of the arc-shaped hand rest 5, the handle bolt 6 is loosened so that the limiting cone 61 is disengaged from the limiting hole 349. The medical staff then adjusts the height of the arc-shaped hand rest 5 by driving the shaft rod 343 to rotate by the foot pedal 345; after the height of the arc-shaped hand rest 5 is adjusted to the right position, the handle bolt 6 is tightened so that the limiting cone 61 is engaged in the corresponding limiting hole 349. Through the engagement of the limiting cone 61 with the limiting hole 349, the bevel gear I 346 cannot rotate, thereby avoiding the situation where the medical staff accidentally touches the foot pedal 345 to drive the shaft rod 343 to rotate.

[0076] Further, such as Figure 3 As shown, a silicone pad 51 is fixedly connected to the inner wall of the curved hand rest 5. The silicone pad 51 is used to abut against the patient's arm. The silicone pad 51 increases the comfort of the patient's arm when placed in the curved hand rest 5, and at the same time, the silicone pad 51 improves the fit with the patient's arm, preventing the patient's arm from slipping out of the curved hand rest 5.

[0077] As a preferred embodiment, Figure 1 As shown, a limit plate 21 is also integrally provided at the top of the table top 2. The limit plate 21 is provided corresponding to the top edge of the table top 2. The limit plate 21 is used to limit the range of movement of the instrument and / or medicine.

[0078] When medical staff maintain the central venous catheter on the patient's arm, the instruments and / or medicines are placed on the table 2. It often happens that the instruments and / or medicines fall from the table 2 and are damaged. Therefore, a limit plate 21 is integrally provided at the top of the table 2. The limit plate 21 is provided corresponding to the top edge of the table 2. The limit plate 21 is used to provide a limit protection at the top edge of the table 2 to prevent the instruments and / or medicines from falling from the table 2 and being damaged.

[0079] The above description is merely a preferred embodiment of the utility model and is not intended to limit the technical solution of the utility model. Those skilled in the art will readily appreciate that the utility model is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the technical solution of the utility model shall be included within the scope of protection of the utility model.

Claims

1. A central venous catheter dressing table, comprising a support frame, to which a tabletop is fixedly connected, characterized in that: Also includes: A lifting mechanism, the lifting mechanism being arranged on the table top; An adaptive adjustment mechanism, the adaptive adjustment mechanism being transmission-connected to the lifting mechanism, the adaptive adjustment mechanism being located above the tabletop, and the adaptive adjustment mechanism being configured to perform deflection and / or pitch adjustment according to a comfortable placement posture of the patient's arm; An arc-shaped hand rest is connected to the adaptive adjustment mechanism, and is used to place the patient's arm. When the patient's arm is placed in the arc-shaped hand rest, the adaptive adjustment mechanism is driven by the arc-shaped hand rest to perform deflection and / or pitch adjustment, and the patient's arm can be adjusted to a comfortable placement posture.

2. The central venous catheter dressing table according to claim 1, characterized in that: The lifting mechanism comprises: A connecting tube, the connecting tube is connected to the bottom end of the table top, and a lifting screw is connected to the connecting tube through bearing I; A driving assembly, the driving assembly being connected to the connecting cylinder and being in driving connection with the lifting screw; A connecting column, wherein the bottom end of the connecting column is integrally provided with an internal threaded tube, the internal threaded tube is threadedly connected to the lifting screw, the outer wall of the internal threaded tube is slidably connected to the inner wall of the connecting tube, and the adaptive adjustment mechanism is arranged at the top end of the connecting column.

3. The central venous catheter dressing table according to claim 2, characterized in that: The drive assembly includes: A housing, the housing being connected to the bottom end of the connecting tube, a shaft being connected to the housing via a bearing II, a crank being connected to each end of the shaft, and a pedal being rotatably connected to the crank; Bevel gear I, the bevel gear I is connected to the shaft and is located in the housing; Bevel gear II, the bevel gear II is connected to the lifting screw, and the bevel gear II is meshed with the bevel gear I.

4. The central venous catheter dressing table according to claim 2, characterized in that: The adaptive adjustment mechanism comprises: A ball head seat, the ball head seat is fixedly connected to the connecting column; A ball head, the ball head is loosely fitted in the ball head seat, a connecting arm is integrally provided on the ball head, and the connecting arm is fixedly connected to the middle position of the bottom end of the arc-shaped hand rest; A limiting assembly is connected to the ball head seat, and the limiting assembly is used to limit the rotation of the ball head in the ball head seat.

5. The central venous catheter dressing table according to claim 4, characterized in that: The limiting component includes: A limiting ring is provided on the connecting arm, and an arc-shaped abutting surface is provided on the inner bottom of the limiting ring, and the arc-shaped abutting surface is used to abut against the ball head. An adjusting cylinder is integrally provided at the bottom end of the limiting ring, and the adjusting cylinder is threadedly connected to the ball head seat, so that after the adjusting cylinder is tightened on the ball head seat, the arc-shaped abutting surface limits and fixes the ball head in the ball head seat.

6. The central venous catheter dressing table according to claim 5, characterized in that: A plurality of torsion bars are symmetrically connected to the peripheral wall of the limiting ring.

7. The central venous catheter dressing table according to claim 2, characterized in that: The outer wall of the internally threaded tube is slidably connected to the inner wall of the connecting tube in the following manner: A plurality of sliding grooves are symmetrically provided on the outer wall of the internally threaded tube, and a plurality of limiting strips are symmetrically provided on the inner wall of the connecting tube. The limiting strips are slidably connected in the sliding grooves, and the outer wall of the internally threaded tube and the inner wall of the connecting tube are clearance-matched.

8. The central venous catheter dressing table according to claim 3, characterized in that: An annular boss is integrally provided at the bottom end of the bevel gear I, and a plurality of limiting holes are symmetrically provided on the outer wall of the annular boss. A handle bolt is connected through the shell, and a limiting cone is integrally provided at the end of the handle bolt, so that after the handle bolt is tightened, the limiting cone is engaged in the limiting hole.

9. The central venous catheter dressing table according to claim 1, characterized in that: A silicone pad is fixedly connected to the inner wall of the arc-shaped hand rest, and the silicone pad is used to fit against the patient's arm.

10. The central venous catheter dressing table according to claim 1, characterized in that: A limit plate is also integrally provided on the top of the table top. The limit plate is provided corresponding to the top edge of the table top and is used to limit the range of movement of the instrument and / or medicine.

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