Arm lifting and fixing device for PICC (peripherally inserted central catheter)

Abstract

The utility model provides an arm lifting and fixing device for PICC (peripherally inserted central catheter), and relates to the technical field of medical instruments, the arm lifting and fixing device comprises a base, a supporting tube, a lifting assembly, a hand supporting plate, a pedal inflating mechanism and a pedal deflating mechanism, the supporting tube, the lifting assembly and the hand supporting plate are sequentially arranged from bottom to top, the lifting assembly comprises a lifting air cylinder, a lifting piston, a lifting piston rod and a connecting plate, the lifting air cylinder is communicated with the supporting pipe, the lifting piston rod, the connecting plate and the hand supporting plate are connected in this way, the supporting pipe and the lifting air cylinder can be rapidly inflated through the pedal inflation mechanism, and therefore the lifting piston rod, the connecting plate and the hand supporting plate are lifted; air in the supporting pipe and the lifting air cylinder can be quickly released through the pedal deflation mechanism, so that the lifting piston rod, the connecting plate and the hand supporting plate are lowered, and the placement height of the hands of the patient is adjusted; and through the wrist and arm fixing belts, a fixing effect can be achieved on unmatched patients such as central pivot patients and children.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an arm-lifting and fixing device for PICC catheter placement. Background Art

[0002] Peripherally Inserted Central Catheters (PICCs) are catheters inserted through a peripheral vein, with the tip of the catheter delivered to the central vein. PICCs are currently widely used for chemotherapy drug infusion therapy in cancer patients. Before PICC placement, the patient's arm must be disinfected. This involves a wide range of disinfection procedures and takes a long time. An assistant is required to hold the arm elevated for extended periods of time, assisting with the disinfection process. Furthermore, central and pediatric patients often have poor cooperation, requiring an assistant to secure the patient's arm during the entire process.

[0003] During clinical PICC placement, different patient sizes, arm lengths, and placement sites require different arm positions. Existing arm lifts are difficult to adjust, making them inadequate for hand fixation and height adjustments during pre-PICC placement disinfection. Utility Model Content

[0004] An embodiment of the present application provides an arm lifting and fixing device for PICC tube placement. The lifting cylinder can be quickly inflated by a foot-operated inflation mechanism to raise the hand support plate. The air in the lifting cylinder can be released by a foot-operated deflation mechanism to lower the hand support plate, thereby adjusting the height of the patient's hand. The wrist and arm fixing straps can be used to fix central nervous system patients, children and other uncooperative patients. The present application solves the problem that the existing arm lifting bracket cannot meet the hand fixation and height change requirements for disinfection before clinical PICC tube placement.

[0005] The embodiment of the present application provides an arm lifting and fixing device for PICC catheter placement, comprising a base, a support tube, a lifting assembly, a hand support plate, a foot-operated inflation mechanism, and a foot-operated deflation mechanism;

[0006] The top of the base is provided with a horizontal mounting surface, the support tube is provided on the base, one end of the support tube is connected to the mounting surface, and the other end extends vertically upward;

[0007] The lifting assembly is arranged at the top of the support tube, and the lifting assembly includes a lifting cylinder, a lifting piston, a lifting piston rod, and a connecting plate; one end of the lifting cylinder is screwed to the top of the support tube, and the other end extends vertically upward. The lifting cylinder is connected to the support tube, and the lifting piston is arranged in the lifting cylinder. One end of the lifting piston rod is connected to the lifting piston, and the other end extends vertically upward, passes through the lifting cylinder, and is connected to the connecting plate;

[0008] The hand support plate is arranged on the connecting plate, a wrist rest is provided on the hand support plate, a wrist fixing strap is provided on the top of the wrist rest, a first soft pad is provided on the upper surface of the hand support plate, a second soft pad is provided on the upper surface of the wrist rest, the foot pedal inflation mechanism and the foot pedal deflation mechanism are both arranged on the mounting surface and are both connected to the support tube.

[0009] In a feasible implementation, the pedal inflation mechanism includes a first cylinder, a first piston, a first spring, a first piston rod, a left pedal, a first connecting seat, a first one-way valve, a second one-way valve and a first connecting pipe;

[0010] The bottom end of the first cylinder is hinged to the mounting surface. A first piston is provided in the first cylinder. The first spring is provided in the first cylinder, with its two ends respectively abutting against the inner wall of the bottom end of the first cylinder and the lower surface of the first piston. The bottom end of the first piston rod is connected to the first piston, and the top end of the first piston rod passes through the first cylinder and is hinged to the upper end of the left pedal. The first connecting seat is provided on the mounting surface, and the lower end of the left pedal is hinged to the top end of the first connecting seat.

[0011] A first one-way valve and a second one-way valve are provided at the lower part of the first cylinder. The first one-way valve allows one-way ventilation from the outside to the inside of the first cylinder, and the second one-way valve allows one-way ventilation from the inside to the outside of the first cylinder. The second one-way valve is connected to the support pipe through a first connecting pipe.

[0012] In a feasible implementation, the arm raising and fixing device further includes a filtering device;

[0013] The exhaust end of the filter device is connected to the first one-way valve.

[0014] In a feasible implementation, the foot-operated deflation mechanism includes a second cylinder, a second piston, a second cylinder, a second piston rod, a right pedal, a second connecting seat, an exhaust valve, and a second connecting pipe;

[0015] The bottom end of the second cylinder is hinged to the mounting surface, a second piston is provided in the second cylinder, and the second spring is provided in the second cylinder, with its two ends respectively abutting against the inner wall of the bottom end of the second cylinder and the lower surface of the second piston. The bottom end of the second piston rod is connected to the second piston, and the top end of the second piston rod passes through the second cylinder and is hinged to the upper end of the right pedal; the second connecting seat is provided on the mounting surface, and the lower end of the right pedal is hinged to the top end of the second connecting seat;

[0016] An exhaust valve is provided on the upper portion of the second cylinder. The exhaust valve is connected to the support tube through a second connecting pipe, and the second piston blocks the exhaust valve.

[0017] In a feasible implementation, the arm raising and fixing device further includes a plurality of tension bars;

[0018] One end of the tension bar is connected to the lower surface of the connecting plate, and the other end is connected to the outer wall of the support tube.

[0019] In a feasible implementation, the arm raising and fixing device further includes a forearm support plate;

[0020] The forearm support plate is detachably connected to the hand support plate.

[0021] In a feasible implementation, the forearm support plate includes a plate body, an inserting plate and a limiting screw;

[0022] A through hole is provided in the middle of the hand support plate, one end of the plug plate is connected to the plate body, the other end of the plug plate is plugged into the through hole, and the other end of the plug plate is provided with a screw hole, and the limit screw is screwed into the screw hole;

[0023] One end of the hand supporting plate is clamped with the nut of the screw hole, and the other end of the hand supporting plate is clamped with the plate body.

[0024] In a feasible implementation, a groove is provided on the upper portion of the plate body, a third soft pad is provided in the groove, and an arm fixing belt is provided on the top of the groove.

[0025] In a feasible implementation, a gripper is provided on the forearm support plate, and the gripper is connected to the forearm support plate via an elastic rope.

[0026] In a feasible implementation, the arm raising and fixing device further includes brakeable casters;

[0027] A plurality of brakeable casters are evenly distributed on the lower surface of the base.

[0028] An embodiment of the present application provides an arm lifting and fixing device for PICC catheter placement, in which a support tube, a lifting assembly and a hand support plate are arranged in sequence from bottom to top. The lifting assembly includes a lifting cylinder, a lifting piston, a lifting piston rod and a connecting plate. The lifting cylinder is connected to the support tube, and the lifting piston rod, the connecting plate and the hand support plate are connected thereby. The support tube and the lifting cylinder can be quickly inflated by a foot-operated inflation mechanism to raise the lifting piston rod, the connecting plate and the hand support plate; the air in the support tube and the lifting cylinder can be quickly released by a foot-operated deflation mechanism to lower the lifting piston rod, the connecting plate and the hand support plate, thereby adjusting the height of the patient's hand; and the wrist and arm fixing straps can be used to fix patients with central nervous system problems, children and other uncooperative patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the arm-lifting and fixing device for PICC catheter placement provided in this application;

[0030] Figure 2 yes Figure 1 The main cross-sectional view of

[0031] Figure 3 is a schematic diagram of the hand support plate and its connection structure;

[0032] Figure 4 It is a structural diagram of the lifting component;

[0033] Figure 5 is a schematic diagram of a pedal inflation mechanism and its connection structure;

[0034] Figure 6 It is a schematic diagram of the pedal deflation mechanism and its connection structure.

[0035] Description of reference numerals:

[0036] 1-base; 2-support tube; 3-lifting assembly; 4-hand support plate; 5-foot-operated inflation mechanism; 6-foot-operated deflation mechanism; 7-filter device; 8-tension bar; 9-forearm support plate; 10-grip; 11-elastic rope; 12-brakeable caster;

[0037] 31-lifting cylinder; 32-lifting piston; 33-lifting piston rod; 34-connecting plate; 41-wrist rest; 42-wrist fixing strap; 43-first cushion; 44-second cushion; 45-through hole; 51-first cylinder; 52-first piston; 53-first spring; 54-first piston rod; 55-left pedal; 56-first connecting seat; 57-first one-way valve; 58-second one-way valve; 59-first connecting pipe; 61-second cylinder; 62-second piston; 63-second spring; 64-second piston rod; 65-right pedal; 66-second connecting seat; 67-exhaust valve; 68-second connecting pipe; 91-plate; 92-insert plate; 93-screw hole; 94-limit screw; 95-groove; 96-third cushion; 97-arm fixing strap. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0039] PICC (Peripherally Inserted Central Catheter) is a deep venous catheterization technique that involves puncturing a peripheral vein (basilic vein, median cubital vein, cephalic vein, etc.) and placing the tip of the catheter in the superior vena cava or inferior vena cava.

[0040] PICC placement has the following advantages:

[0041] 1. Reduce repeated punctures: For patients who require long-term infusion treatment (such as chemotherapy, parenteral nutrition, etc.), PICC can avoid the pain and damage caused by frequent peripheral vein punctures.

[0042] 2. Protect blood vessels: reduce drug stimulation and damage to peripheral blood vessels, and reduce the occurrence of complications such as phlebitis.

[0043] 3. Convenient for patients: patients can move around with the tube on without affecting their daily lives.

[0044] 4. Long-term use: It can be retained for a long time, generally several months to one year.

[0045] When performing PICC catheterization, the patient's arm needs to be raised to different heights according to the body shape, arm length and catheterization site of different patients. In clinical practice, nurse assistants often assist patients in raising and lowering their hands and cooperate with disinfection. There is also an arm raising bracket, the height of which is difficult to adjust, and it cannot meet the use requirements of different PICC catheterization situations. In addition, for central and pediatric patients, such patients have poor cooperation and require assistants to fix the patient's catheterization arm throughout the process. The arm raising and fixing device for PICC catheterization provided in the present application can quickly inflate the lifting cylinder through a foot-operated inflation mechanism, thereby raising the hand support plate, and release the air in the lifting cylinder through a foot-operated deflation mechanism, thereby lowering the hand support plate, thereby meeting the use requirements of different PICC catheterization situations, and is fixed by wrist and arm straps, which effectively fixes uncooperative patients.

[0046] The specific structure of the arm lifting and fixing device for PICC catheter placement provided in this application is described in detail below with reference to the accompanying drawings.

[0047] Reference Figures 1-6 As shown, the embodiment of the present application provides an arm lifting and fixing device for PICC catheter placement, comprising a base 1, a support tube 2, a lifting assembly 3, a hand support plate 4, a foot-operated inflation mechanism 5, and a foot-operated deflation mechanism 6;

[0048] The base 1 can be a circular base, and the top of the base 1 is provided with a horizontal mounting surface. The support tube 2 can be described as a metal tube body. The support tube 2 is provided on the base 1, and the bottom end of the support tube 2 is fixedly connected to the middle of the mounting surface of the base 1, and the top end of the support tube 2 extends vertically upward.

[0049] The lifting assembly 3 is arranged on the top of the support tube 2, and the lifting assembly 3 includes a lifting cylinder 31, a lifting piston 32, a lifting piston rod 33 and a connecting plate 34;

[0050] like Figure 4 As shown, the bottom end of the lifting cylinder 31 is screwed to the top end of the support tube 2, the lifting cylinder 31 is connected to the support tube 2, the top end of the lifting cylinder 31 extends vertically upward, the top of the lifting cylinder 31 is provided with a through hole, the lifting piston 32 is arranged in the lifting cylinder 31, the outer wall of the lifting piston 32 is tightly fitted with the inner wall of the lifting cylinder 31, the lifting piston rod 33 is a vertical rod body, the bottom end of the lifting piston rod 33 is connected to the middle part of the upper surface of the lifting piston 32, the top end of the lifting piston rod 33 extends vertically upward, passes through the through hole of the lifting cylinder 31, and is connected to the connecting plate 34, the connecting plate 34 can be a circular plate body, and the connecting plate 34 and the bottom end of the lifting piston rod 33 can be rotatably connected or fixedly connected;

[0051] The hand support plate 4 is provided on the connecting plate 34, and the two can be connected by screws. The hand support plate 4 is rectangular as a whole, and a wrist support 41 is provided on the hand support plate 4. The wrist support 41 can be a semicircular support plate, and the inner wall shape of the wrist support 41 matches the wrist of an ordinary person. Through the setting of the hand support plate 4, when the PICC tube is placed, the patient's hand can be placed on the hand support plate 4, and the patient's wrist is placed on the wrist support 41 to prevent the hand from hanging down at the bedside, causing discomfort to the patient;

[0052] A wrist fixing strap 42 is provided on the top of the wrist support 41. The wrist fixing strap 42 can be an elastic strap and can be fixed by a nylon patch. The wrist fixing strap 42 fixes the patient's exterior, and can effectively fix and maintain a suitable body position for central nervous system and pediatric patients with poor coordination.

[0053] A first soft pad 43 is provided on the upper surface of the hand support plate 4, and a second soft pad 44 is provided on the upper surface of the wrist support 41. The second soft pad 44 is slightly higher than the first soft pad 43. Both the first soft pad 43 and the second soft pad 44 can be rubber pads.

[0054] The pedal inflation mechanism 5 and the pedal deflation mechanism 6 are both arranged on the mounting surface and are both connected to the support tube 2. The pedal inflation mechanism 5 and the pedal deflation mechanism 6 are respectively located on both sides of the support tube 2. By stepping on the pedal inflation mechanism 5, the hand support plate 4 can be raised, and by stepping on the pedal deflation mechanism 6, the hand support plate 4 can be lowered.

[0055] An embodiment of the present application provides an arm lifting and fixing device for PICC catheter placement, in which a support tube 2, a lifting assembly 3 and a hand support plate 4 are arranged in sequence from bottom to top. The lifting assembly 3 includes a lifting cylinder 31, a lifting piston 32, a lifting piston rod 33 and a connecting plate 34. The lifting cylinder 31 is connected to the support tube 2, and the lifting piston rod 33, the connecting plate 34 and the hand support plate 4 are connected thereby. The support tube 2 and the lifting cylinder 31 can be quickly inflated by a foot-operated inflation mechanism 5, thereby raising the lifting piston rod 33, the connecting plate 34 and the hand support plate 4; the support tube 2 and the lifting cylinder 31 can be quickly released with air by a foot-operated deflation mechanism 6, thereby lowering the lifting piston rod 33, the connecting plate 34 and the hand support plate 4, thereby achieving adjustment of the patient's hand placement height; the wrist fixing strap 42 can be used to fix patients with central nervous system problems, children and other uncooperative patients.

[0056] Reference Figure 5 As shown, in some embodiments, the pedal inflation mechanism 5 includes a first cylinder 51, a first piston 52, a first spring 53, a first piston rod 54, a left pedal 55, a first connecting seat 56, a first one-way valve 57, a second one-way valve 58 and a first connecting pipe 59;

[0057] The bottom end of the first cylinder 51 is hinged to the mounting surface, and the top end of the first cylinder 51 can swing back and forth. A first piston 52 is provided in the first cylinder 51. A first spring 53 is provided in the first cylinder 53, with its two ends respectively abutting against the inner wall of the bottom end of the first cylinder 53 and the lower surface of the first piston 52. The first spring 53 is always in a compressed state, exerting an upward elastic force on the first piston 52, so that the upper surface of the first piston 52 fits against the inner wall of the top end of the first cylinder 51.

[0058] The first piston rod 54 is a vertical rod, the bottom end of the first piston rod 54 is connected to the first piston 52, and the top end of the first piston rod 54 passes through the first cylinder 51;

[0059] The first connecting seat 56 is a rectangular base. The first connecting seat 56 is disposed on the mounting surface and is located at the rear of the first cylinder 51. The left pedal 55 is a conventional pedal. The lower end of the left pedal 55 is hinged to the top of the first connecting seat 56, and the upper end of the left pedal 55 is hinged to the top of the first piston rod 54.

[0060] A first one-way valve 57 and a second one-way valve 58 are provided at the lower portion of the first cylinder 51. Both the first one-way valve 57 and the second one-way valve 58 pass through the first cylinder 51. The first one-way valve 57 allows one-way ventilation from the outside of the first cylinder 51 to the inside, and the second one-way valve 58 allows one-way ventilation from the inside of the first cylinder 51 to the outside. The first connecting pipe 59 is a conventional hose, and the second one-way valve 58 is connected to the support pipe 2 through the first connecting pipe 59.

[0061] In the natural state, the first piston 52 is in contact with the inner wall of the top end of the first cylinder 51 under the elastic force of the first spring 53. At this time, the front end of the left pedal 55 is tilted upward by 45°-60°.

[0062] When the left pedal 55 is stepped on downward, the front end of the left pedal 55, the first piston rod 54 and the first piston 52 all move downward, causing the air in the first cylinder 51 to flow through the second one-way valve 58 and the first connecting pipe 59 into the support pipe 2 and the lifting cylinder 31, thereby raising the connecting plate 34 and the hand support plate 4.

[0063] When the left pedal 55 is released, the first piston 52 is reset under the elastic force of the first spring 53, allowing external air to enter the first cylinder 51. Repeatedly stepping on the left pedal 55 can quickly increase the height.

[0064] In some embodiments, the arm raising and fixing device further comprises a filtering device 7;

[0065] The filter device 7 includes a shell, in which a filter layer is provided. The filter layer can be a filter mesh. An air inlet end is provided on the left inner wall of the shell, and an exhaust end is provided on the upper right part of the shell. The exhaust end of the filter device 7 is connected to the first one-way valve 57.

[0066] Reference Figure 6 As shown, in some embodiments, the foot-operated deflation mechanism 6 includes a second cylinder 61, a second piston 62, a second cylinder 61, a second piston rod 64, a right pedal 65, a second connecting seat 66, an exhaust valve 67 and a second connecting pipe 68;

[0067] The bottom end of the second cylinder 61 is hinged to the mounting surface, and the upper end of the second cylinder 61 can swing back and forth. A second piston 62 is provided in the second cylinder 61. A second spring 63 is provided in the second cylinder 61, with its two ends respectively abutting against the inner wall of the bottom end of the second cylinder 61 and the lower surface of the second piston 62. The second spring 63 is always in a compressed state, exerting an upward elastic force on the second piston 62, so that the upper surface of the second piston 62 fits against the inner wall of the top end of the second cylinder 61.

[0068] The second piston rod 64 is a vertical rod, the bottom end of the second piston rod 64 is connected to the second piston 62, and the top end of the second piston rod 64 passes through the second cylinder 61;

[0069] The second connecting seat 66 is a rectangular base. The second connecting seat 66 is arranged on the mounting surface and is located at the rear of the second cylinder 61. The right pedal 65 is a conventional pedal. The lower end of the right pedal 65 is hinged to the top end of the second connecting seat 66, and the upper end of the right pedal 65 is hinged to the second piston rod 64.

[0070] An exhaust hole is provided at the upper portion of the second cylinder 61, and an exhaust valve 67 is provided in the exhaust hole. The exhaust valve 67 passes through the second cylinder 61. The second connecting pipe 68 is a conventional hose. The exhaust valve 67 is connected to the support pipe 2 through the second connecting pipe 68. The second piston 62 blocks the exhaust valve 67.

[0071] In the natural state, the second piston 62 is in contact with the inner wall of the top end of the second cylinder 61 under the elastic force of the second spring 63. The side wall of the second piston 62 blocks the exhaust hole and the exhaust valve 67, preventing the air in the support tube 2 and the lifting cylinder 31 from leaking. At this time, the front end of the right pedal 65 is tilted upward by 45°-60°.

[0072] When the right pedal 65 is stepped on downward, the front end of the right pedal 65, the second piston rod 64 and the second piston 62 move downward, and the second piston 62 no longer blocks the exhaust hole and the exhaust valve 67. The air in the support pipe 2 and the lifting cylinder 31 is discharged through the second connecting pipe 68, the exhaust valve 67 and the top through-hole of the second cylinder 61, thereby lowering the connecting plate 34 and the hand support plate 4.

[0073] When the right pedal 65 is released, the second piston 62 is reset under the elastic force of the second spring 63, and the exhaust hole and the exhaust valve 67 are re-blocked, so that the connecting plate 34 and the hand support plate 4 stop descending.

[0074] Reference Figure 2 and Figure 4 As shown, in some embodiments, the arm raising and fixing device further includes a plurality of tension bars 8, and the tension bars 8 may be spring tension bars;

[0075] One end of the tension bar 8 is connected to the lower surface of the connecting plate 34, and the other end is connected to the outer wall of the support tube 2;

[0076] The tension bar 8 is always in a stretched state, applying a downward pulling force to the connecting plate 34 and the hand support plate 4. When the right pedal 65 is stepped down, the air in the lifting cylinder 31 can be quickly discharged, thereby increasing the descending speed of the hand support plate 4.

[0077] Reference Figure 3 As shown, in some embodiments, the arm raising and fixing device further includes a forearm support plate 9;

[0078] The forearm support plate 9 matches the shape of the ordinary person's forearm. The forearm support plate 9 is fixed to the rear end of the hand support plate 4, and the two can be freely detached;

[0079] After PICC catheterization, or during regular disinfection of the catheterization, the forearm support plate 9 can be connected to the hand support plate 4, and the patient's forearm can be placed on the forearm support plate 9 to facilitate the patient's arm extension.

[0080] In some embodiments, the forearm support plate 9 includes a plate body 91, an inserting plate 92 and a limiting screw 94;

[0081] like Figure 3 As shown, a through hole 45 is provided in the middle of the hand support plate 4, and the through hole 45 passes through the hand support plate 4 on the left and right sides. The inserting plate 92 can be a rectangular plate body or a cylindrical inserting rod. The right end of the inserting plate 92 is connected to the plate body 91, and the left end of the inserting plate 92 is inserted into the through hole 45. The left end of the inserting plate 92 is provided with a screw hole 93, and a limit screw 94 is screwed into the screw hole 93;

[0082] One end of the hand support plate 4 is clamped with the nut of the screw hole 93, and the other end of the hand support plate 4 is clamped with the plate body 91. By installing or removing the limit screw 94, the forearm support plate 9 and the hand support plate 4 can be connected or disassembled, so that the device can be freely combined according to actual usage requirements.

[0083] In some embodiments, a groove 95 is provided on the upper portion of the plate body 91, the inner wall of the groove 95 matches the forearm of an ordinary person, a third soft pad 96 is provided in the groove 95, and the third soft pad 96 can be a rubber soft pad. An arm fixing strap 97 is provided on the top of the groove 95, and the arm fixing strap 97 can be an elastic strap and can be fixed by a nylon patch.

[0084] In some embodiments, a gripper 10 is provided on the forearm support plate 9, and the gripper 10 is connected to the forearm support plate 9 via an elastic rope 11;

[0085] During the puncture, the patient can hold the gripper 10 to increase the filling degree of the blood vessels, thereby facilitating puncture and catheterization.

[0086] In some embodiments, the arm raising fixture further includes brakeable casters 12;

[0087] A plurality of brakeable casters 12 are evenly distributed on the lower surface of the base 1 , thereby facilitating the movement of the device.

[0088] The device supports the patient's hand and wrist through the hand support plate 4, and can be raised and lowered freely, driving the catheter arm to rise and fall, meeting the usage requirements of different PICC catheterization situations, and allowing the operator to disinfect the arm in all directions to achieve a disinfection effect; the device can support the catheterization arm and improve the patient's comfort; when the catheter is placed and punctured, the patient is required to make a fist, and the device is equipped with a hand gripper to increase the patient's blood vessel filling and facilitate puncture; the device can fix the arm, and can effectively fix and maintain a suitable posture for central nervous system and pediatric patients with poor cooperation.

[0089] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on the several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0090] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.

Claims

1. A PICC catheter placement arm lifting and fixing device, characterized by: include; A base (1), wherein the top of the base (1) is provided with a horizontal mounting surface; A support tube (2) is provided on the base (1), one end of the support tube (2) is connected to the mounting surface, and the other end of the support tube (2) extends vertically upward; A lifting assembly (3) is arranged on the top of the support tube (2), and the lifting assembly (3) includes a lifting cylinder (31), a lifting piston (32), a lifting piston rod (33) and a connecting plate (34); one end of the lifting cylinder (31) is screwed to the top of the support tube (2), and the other end of the lifting cylinder (31) extends vertically upward. The lifting cylinder (31) is connected to the support tube (2), and the lifting piston (32) is arranged in the lifting cylinder (31). One end of the lifting piston rod (33) is connected to the lifting piston (32), and the other end extends vertically upward, passes through the lifting cylinder (31) and is connected to the connecting plate (34); A hand support plate (4) is provided on the connecting plate (34), a wrist support (41) is provided on the hand support plate (4), a wrist fixing belt (42) is provided on the top of the wrist support (41), a first soft pad (43) is provided on the upper surface of the hand support plate (4), and a second soft pad (44) is provided on the upper surface of the wrist support (41); A pedal inflation mechanism (5) and a pedal deflation mechanism (6) are arranged on the mounting surface, and both the pedal inflation mechanism (5) and the pedal deflation mechanism (6) are connected to the support tube (2).

2. The arm-lifting and fixing device for PICC catheter placement according to claim 1, characterized in that: The pedal inflation mechanism (5) comprises a first cylinder (51), a first piston (52), a first spring (53), a first piston rod (54), a left pedal (55), a first connecting seat (56), a first one-way valve (57), a second one-way valve (58) and a first connecting pipe (59); The bottom end of the first cylinder (51) is hinged to the mounting surface, a first piston (52) is provided in the first cylinder (51), the first spring (53) is provided in the first cylinder (51), and its two ends are respectively in contact with the inner wall of the bottom end of the first cylinder (51) and the lower surface of the first piston (52), the bottom end of the first piston rod (54) is connected to the first piston (52), the top end of the first piston rod (54) passes through the first cylinder (51) and is hinged to the upper end of the left pedal (55); the first connecting seat (56) is provided on the mounting surface, and the lower end of the left pedal (55) is hinged to the top end of the first connecting seat (56); A first one-way valve (57) and a second one-way valve (58) are provided at the lower portion of the first cylinder (51). The one-way ventilation direction of the first one-way valve (57) is from the outside to the inside of the first cylinder (51), and the one-way ventilation direction of the second one-way valve (58) is from the inside to the outside of the first cylinder (51). The second one-way valve (58) is connected to the support pipe (2) through a first connecting pipe (59).

3. The arm-elevating and fixing device for PICC catheter placement according to claim 2, characterized in that: The arm raising and fixing device further comprises a filtering device (7); The exhaust end of the filter device (7) is connected to the first one-way valve (57).

4. The arm-elevating and fixing device for PICC catheter placement according to claim 1, characterized in that: The pedal deflation mechanism (6) comprises a second cylinder (61), a second piston (62), a second cylinder (61), a second piston rod (64), a right pedal (65), a second connecting seat (66), an exhaust valve (67) and a second connecting pipe (68); The bottom end of the second cylinder (61) is hinged to the mounting surface, a second piston (62) is provided in the second cylinder (61), a second spring (63) is provided in the second cylinder (61), and its two ends are respectively in contact with the inner wall of the bottom end of the second cylinder (61) and the lower surface of the second piston (62), the bottom end of the second piston rod (64) is connected to the second piston (62), the top end of the second piston rod (64) passes through the second cylinder (61) and is hinged to the upper end of the right pedal (65); the second connecting seat (66) is provided on the mounting surface, and the lower end of the right pedal (65) is hinged to the top end of the second connecting seat (66); An exhaust valve (67) is provided on the upper portion of the second cylinder (61). The exhaust valve (67) is connected to the support tube (2) via a second connecting pipe (68). The second piston (62) blocks the exhaust valve (67).

5. The arm-elevating and fixing device for PICC catheter placement according to claim 1, characterized in that: The arm raising and fixing device further comprises a plurality of tension bars (8); One end of the tension bar (8) is connected to the lower surface of the connecting plate (34), and the other end is connected to the outer wall of the support tube (2).

6. The arm-elevating and fixing device for PICC catheter placement according to claim 1, characterized in that: The arm raising and fixing device further comprises a forearm support plate (9); The forearm support plate (9) is detachably connected to the hand support plate (4).

7. The arm-elevating and fixing device for PICC catheter placement according to claim 6, characterized in that: The forearm support plate (9) comprises a plate body (91), an inserting plate (92) and a limiting screw (94); A through hole (45) is provided in the middle of the hand support plate (4), one end of the inserting plate (92) is connected to the plate body (91), the other end of the inserting plate (92) is plugged into the through hole (45), the other end of the inserting plate (92) is provided with a screw hole (93), and the limiting screw (94) is screwed into the screw hole (93); One end of the hand support plate (4) is snap-fitted to the nut of the screw hole (93), and the other end of the hand support plate (4) is snap-fitted to the plate body (91).

8. The arm-elevating and fixing device for PICC catheter placement according to claim 7, characterized in that: A groove (95) is provided on the upper portion of the plate body (91), a third soft pad (96) is provided in the groove (95), and an arm fixing belt (97) is provided on the top of the groove (95).

9. The arm-elevating and fixing device for PICC catheter placement according to claim 8, characterized in that: A gripper (10) is provided on the forearm support plate (9), and the gripper (10) is connected to the forearm support plate (9) via an elastic rope (11).

10. The arm-elevating and fixing device for PICC catheter placement according to claim 1, characterized in that: The arm raising and fixing device further comprises a brakeable castor (12); The plurality of brakeable casters (12) are evenly distributed on the lower surface of the base (1).

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