Arteriopuncture auxiliary fixator and use method thereof

Abstract

The invention discloses an auxiliary fixator for arteriopuncture and a using method thereof, and belongs to the technical field of medical instruments. The auxiliary fixator comprises a bottom plate, a height adjusting mechanism and a fixing mechanism; the fixing mechanism clamps a patient and is arranged on the height adjusting mechanism; the height adjusting mechanism is positioned above the bottom plate; a fixing plate extending upwards is arranged on the bottom plate, and an inclined sliding rail is arranged on the fixing plate. The height adjusting mechanism comprises a supporting plate, a U-shaped transverse plate and a moving assembly. The U-shaped transverse plate is inversely buckled on the side, back to the bottom plate, of the supporting plate. The supporting plate is provided with a horizontal sliding rail and a sliding opening allowing the fixing plate to penetrate through in a sliding mode. The moving assembly comprises a first driving mechanism and a sliding assembly connected with the first driving mechanism; the first driving mechanism is installed on the supporting plate, the sliding assembly comprises a first sliding part and a second sliding part, the first sliding part is slidably connected with the inclined sliding rail, and the second sliding part is slidably connected with the horizontal sliding rail. The height of the fixator can be adjusted according to the actual condition of a patient, operation of medical staff is facilitated, and the use comfort of the patient is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to an arterial puncture auxiliary fixator and a method of using the same. Background Art

[0002] Arterial puncture is an important technique used in clinical medicine, especially in emergency departments, operating rooms, and intensive care units. Arterial puncture is required to draw blood for laboratory tests, blood samples, medication infusions, or emergency treatment.

[0003] As disclosed in a Chinese utility model patent (publication number: CN215306795U), a new radial artery blood sampling device comprises a base, a fixing strap, and a handle. The base has a first inclined surface for supporting the forearm and a second inclined surface for supporting the back of the hand. The fixing strap is positioned above the first inclined surface, with both ends of the fixing strap removably connected to the base. The handle is positioned above the second inclined surface and removably connected to the base via connecting straps on both sides.

[0004] Existing arterial punctures have some problems in the process of fixing the patient's arm: manual fixation and bandage wrapping by nurses are more likely to occur when the patient moves or is impacted. It is difficult to accurately control the fixation force during manual fixation. Too tight may damage the soft tissue around the artery, while too loose may not be able to maintain the stability of the puncture needle, increasing the difficulty of operation and prolonging treatment time. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides an arterial puncture auxiliary fixator and a method for using the same, which can adjust the height of the fixator according to the actual situation of the patient, making it easier for medical staff to operate.

[0006] The present invention provides the following technical solutions:

[0007] In a first aspect, an arterial puncture auxiliary fixator is provided, comprising: a base plate, a height adjustment mechanism, and a fixing mechanism; the fixing mechanism is used to clamp the patient's puncture site and is arranged on the height adjustment mechanism; the height adjustment mechanism is located above the base plate;

[0008] The bottom plate is provided with a fixed plate extending upward, and the fixed plate is provided with an inclined slide rail;

[0009] The height adjustment mechanism includes a support plate, a U-shaped cross plate and a moving assembly, wherein the U-shaped cross plate is buckled on the side of the support plate facing away from the bottom plate; the support plate is provided with a horizontal slide rail and a sliding opening through which the fixed plate can slide;

[0010] The moving assembly includes a first driving mechanism and a sliding assembly connected thereto; the first driving mechanism is mounted on a support plate, and the sliding assembly includes a first sliding member and a second sliding member, the first sliding member is slidably connected to the inclined slide rail, and the second sliding member is slidably connected to the horizontal slide rail.

[0011] Optionally, the fixing plates include two groups distributed front and back, and each group includes two groups distributed left and right; the left and right fixing plates are respectively located on the left and right sides of the horizontal slide rail;

[0012] The sliding assembly includes two sliding components that are both connected to the first driving mechanism and are distributed front to back; the first sliding components are correspondingly arranged on the left and right sides of the second sliding component.

[0013] Optionally, the first driving mechanism is located between the left and right fixed plates, and the first driving mechanism includes a first motor, an L-shaped rack and a first driving gear; the first motor is installed on the support plate, and the output shaft is connected to the first driving gear; the L-shaped rack has two distributed front and back and is connected one-to-one with the two second sliding members; the two L-shaped racks are both engaged with the first driving gear.

[0014] Optionally, the fixing mechanism includes a second driving mechanism and several clamping assemblies distributed front and back; the second driving mechanism includes a second motor, an intermediate transmission assembly, a fixed rail and a U-shaped slider; the fixed rail corresponds one-to-one to the clamping assembly and is installed on the outer side of the U-shaped cross plate, the U-shaped slider is slidably connected to the fixed rail, a U-shaped bracket is provided on the top of the fixed rail, and the bottom of the clamping assembly is hinged to the corresponding U-shaped bracket and U-shaped slider; the second motor drives all U-shaped sliders to rise and fall along their corresponding fixed rails through the intermediate transmission assembly; when the U-shaped slider rises and falls, the clamping parts of the clamping assembly approach or move away from each other.

[0015] Optionally, the clamping assembly includes a first clamping plate, a second clamping plate, a third clamping plate, a fixed swing arm, a folding swing arm, a connecting swing arm, an extended connecting rod, a first connecting rod and a second connecting rod;

[0016] The first clamping plate is mounted on the top surface of the U-shaped horizontal plate; the second clamping plate is disposed on the inner side of the fixed swing arm; the folding swing arm comprises a T-shaped vertical portion and a horizontal portion, and the third clamping plate is disposed on the inner side of the vertical portion; one end of the horizontal portion is hinged to the first end of the connecting swing arm, and the other end is hinged to the second connecting rod;

[0017] The bottom of the fixed swing arm is hinged to the opening of the U-shaped bracket through a fixed coupling, and two symmetrically distributed triangular connecting plates are hinged at both ends of the fixed coupling. One end of the triangular connecting plate is hinged to the side of the U-shaped slider through a hinged first connecting rod, and the other end is hinged to the bottom of the extended connecting rod; the top of the fixed swing arm is bent outward and has a U-shaped opening. The connecting swing arm is snapped into the U-shaped opening, and the snap-in portion is provided with a connecting ear seat, which is hinged at the top bending position of the fixed swing arm. The second connecting rod is hinged to the outer side of the fixed swing arm.

[0018] The top of the extended connecting rod is hinged to the second end of the connecting swing arm.

[0019] Optionally, a U-shaped supporting pad is further provided on the top surface of the U-shaped transverse plate; the U-shaped supporting pad and the third clamping plate are alternately distributed.

[0020] Optionally, the intermediate transmission assembly includes: a second drive gear and an auxiliary gear; the output shaft of the second motor is connected to the second drive gear, and the second motor includes two distributed front and back; the auxiliary gear is provided with a limit swing arm extending along its radial direction, and the limit swing arm is provided with a strip hole; the U-shaped slider is provided with a limit pin, and each U-shaped slider corresponds to a pair of auxiliary gears overlapping with the limit swing arm; the limit pin is inserted into the strip hole and can move back and forth along the strip hole of the corresponding pair of limit swing arms; in the two pairs of auxiliary gears corresponding to the two adjacent U-shaped sliders, the two auxiliary gears located in the middle are meshed with each other; the auxiliary gears located at the front and rear edges of the U-shaped cross plate are respectively meshed with the two second drive gears.

[0021] Optionally, there are three fixed rails, and the front and rear sides of the fixed rail located in the middle are both provided with widened ear seats installed on the support plate; the outer sides of the fixed rails located at the edge are both provided with single ear seats installed on the support plate; the auxiliary gear is rotatably connected to the single ear seat or the widened ear seat.

[0022] In a second aspect, a method for using an arterial puncture auxiliary fixator is provided, based on the arterial puncture auxiliary fixator described in the first aspect, comprising the following steps:

[0023] S1: When in use, place the base plate on the operating table;

[0024] S2: After the first driving mechanism is activated, the second sliding member is driven to move along the horizontal slide rail, and the first sliding member slides along the inclined slide rail. During the sliding process, under the limiting action of the first sliding member and the inclined slide rail, the support plate and the U-shaped cross plate rise along the fixed plate and away from the bottom plate;

[0025] S3: Under the action of the second driving mechanism, the plurality of clamping assemblies simultaneously clamp or release the patient's part to be punctured.

[0026] Optionally, step S3 includes clamping the patient's puncture site, specifically:

[0027] The second driving mechanism drives all the U-shaped slide blocks to descend one by one along the fixed rails through the intermediate transmission assembly. During the sliding process, the triangular connecting plate is driven to swing along the fixed connecting shaft through the first connecting rod. The swing of the triangular connecting plate drives the extended connecting rod to swing. The swing of the extended connecting rod drives the fixed swing arm and the second clamping plate to swing along the fixed connecting shaft.

[0028] The extended connecting rod synchronously drives the connecting swing arm, the folding swing arm and the third splint to hinge and swing along the connecting ear seat, and then drives the folding swing arm and the third splint to further hinge the swing arm inward through a pair of second connecting rods;

[0029] The first splint, the second splint and the third splint perform annular clamping on the patient's part to be punctured.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) In the present invention, since the body thickness of patients of different ages and body shapes is different, the height of the fixator can be adjusted according to the actual situation of the patient to ensure that the artery is in a suitable puncture plane, so that medical staff can obtain the best puncture operation angle and field of view, reduce repeated punctures caused by inconvenient operation, improve puncture efficiency, and meet the needs of arterial puncture in various complex environments.

[0032] (2) In the present invention, the first splint, the second splint and the third splint are arranged in a circular manner to clamp the part to be punctured, so that the clamping pressure can be distributed more evenly, avoiding excessive pressure on the part to be punctured during the fixation process, reducing the pain and discomfort caused by long-term fixation of the patient, and reducing the risk of blood circulation obstruction or nerve damage caused by excessive local pressure; since the part to be punctured is reliably fixed, medical staff do not need to worry about the operation being affected by the movement of the patient's limbs during the operation, and can focus more on the implementation of the puncture technology, thereby improving the efficiency and quality of the operation; it helps medical staff to observe the puncture point and its surrounding conditions more clearly, such as the position and strength of the arterial pulsation, so as to better determine the puncture direction and depth.

[0033] (3) The setting of the intermediate transmission assembly of the present invention can enable several clamping assemblies to operate simultaneously. The second clamping plate and the third clamping plate can effectively clamp the part to be punctured under the action of the fixed swing arm, the folding swing arm, the connecting swing arm, the extended connecting rod, the first connecting rod and the second connecting rod. The moderate clamping force makes the patient feel more comfortable during the puncture process and reduces the irritability and muscle tension caused by discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0036] Figure 3 It is a structural schematic diagram of the bottom plate, support plate and U-shaped cross plate of the present invention;

[0037] Figure 4 It is an exploded schematic diagram of the height adjustment mechanism of the present invention;

[0038] Figure 5 This is a schematic diagram of the installation position of the fixed rail and the intermediate transmission assembly of the present invention;

[0039] Figure 6 is an exploded schematic diagram of the intermediate transmission assembly of the present invention;

[0040] Figure 7 It is a schematic structural diagram of the clamping assembly of the present invention;

[0041] Figure 8 Schematic diagram of the exploded view of the clamping assembly of the present invention.

[0042] Markings in the figure are: 1 is the bottom plate, 11 is the fixed plate, 111 is the inclined slide rail, 2 is the height adjustment mechanism, 21 is the support plate, 211 is the sliding port, 22 is the U-shaped horizontal plate, 23 is the moving component, 231 is the first motor, 232 is the L-shaped rack, 233 is the first driving gear, 234 is the first sliding member, 235 is the second sliding member, 24 is the horizontal slide rail, 3 is the fixed rail, 31 is the U-shaped slider, 311 is the limit pin, 32 is the U-shaped bracket, 4 is the second motor, and 5 is the intermediate transmission component , 51 is the second driving gear, 52 is the auxiliary gear, 53 is the limiting swing arm, 531 is the bar hole, 54 is the single ear seat, 55 is the widened ear seat, 6 is the clamping assembly, 61 is the first splint, 62 is the second splint, 63 is the third splint, 64 is the U-shaped pad, 601 is the fixed swing arm, 602 is the folding swing arm, 603 is the connecting swing arm, 604 is the extended connecting rod, 605 is the first connecting rod, 606 is the second connecting rod, 607 is the fixed coupling, 608 is the connecting ear seat, and 609 is the triangular connecting plate. DETAILED DESCRIPTION

[0043] The present invention will now be described in further detail with reference to the accompanying drawings.

[0044] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. cited in the invention are only for the convenience of description, and are not used to limit the scope of the invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the invention without substantial changes in the technical content. It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the term "comprises" and any variations thereof are intended to cover non-exclusive inclusions. For example, a series of steps, products or devices are not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these methods, products or devices.

[0045] Example 1

[0046] like Figures 1-4 As shown, an arterial puncture auxiliary fixator is provided, comprising: a base plate 1, a height adjustment mechanism 2 and a fixing mechanism; the fixing mechanism is used to clamp the patient's puncture site and is arranged on the height adjustment mechanism 2; the height adjustment mechanism 2 is located above the base plate 1.

[0047] An upwardly extending fixed plate 11 is provided on the base plate 1, and an inclined slide rail 111 is provided on the fixed plate 11; the fixed plate 11 includes two groups distributed front and back, and each group includes two distributed left and right; the inclined slide rail 111 is a track inclined along the height direction of the fixed plate 11. As an option, the highest points of the inclined slide rails 111 of the two groups of fixed plates 11 distributed front and back are both located in the middle.

[0048] Specifically, the height adjustment mechanism 2 includes a support plate 21, a U-shaped cross plate 22 and a moving assembly 23. The U-shaped cross plate 22 is inverted on the side of the support plate 21 facing away from the base plate 1. A sliding opening 211 is provided on the support plate 21, and the sliding opening 211 corresponds one-to-one to the fixed plate 11; each fixed plate 11 can be slid through the corresponding sliding opening 211.

[0049] A horizontal slide rail 24 is also provided on the support plate 21. The horizontal slide rail 24 extends along the front and rear directions of the U-shaped cross plate 22. When there are two groups of fixed plates 11, there are two horizontal slide rails 24 and each is located between the two fixed plates 11 distributed on the left and right; the horizontal slide rail 24 can be an I-shaped slide rail as an option.

[0050] More specifically, the moving assembly 23 includes a first driving mechanism and a sliding assembly connected thereto; the first driving mechanism is installed on the support plate 21, and the sliding assembly includes a first sliding member 234 and a second sliding member 235, the first sliding member 234 is slidably connected to the inclined slide rail 111, and the second sliding member 235 is slidably connected to the horizontal slide rail 24, the second sliding member 235 is a slider, and the slider is slidably connected to the horizontal slide rail 24. When there are two groups of fixed plates 11, there are two sliders, and they slide correspondingly on the two horizontal slide rails 24; the first sliding member 234 is a pin-shaped structure, and a first sliding member 234 is correspondingly set on the left and right sides of each second sliding member 235, and the first sliding member 234 corresponds one-to-one to the inclined slide rail 111.

[0051] In this embodiment, the first drive mechanism is located between the left and right fixed plates 11 and includes a first motor 231, an L-shaped rack 232, and a first drive gear 233. The first motor 231 is mounted on the support plate 21, and its output shaft is connected to the first drive gear 233. Specifically, a rectangular connecting plate is fixedly provided in the middle of the support plate 21, with a square through-hole defined therein. The first motor 231 is mounted within the square through-hole. Two L-shaped racks 232 are arranged front and rear, and are connected to the second sliding members 235 in a one-to-one correspondence. The two L-shaped racks 232 mesh with the first drive gear 233. When the first motor 231 rotates, the first drive gear 233 drives the two L-shaped racks 232 to move synchronously, thereby driving the two second sliding members 235 toward or away from each other. Simultaneously, the two sets of first sliding members 234 also move along the inclined rail 111.

[0052] During the sliding process of the sliding assembly, due to the limiting effect of the first sliding member 234 and the inclined slide rail 111, the support plate 21 and the U-shaped cross plate 22 rise along the fixed plate 11 and away from the bottom plate 1. Therefore, when medical staff need to perform arterial puncture in different parts of the patient, the height of the fixator can be adjusted according to the actual situation of the patient, which is conducive to the patient maintaining a comfortable and natural posture, reducing muscle tension and fatigue, and thus avoiding puncture errors caused by inappropriate height by medical staff.

[0053] Example 2

[0054] like Figure 5-Figure 8 As shown, based on Example 1, the fixing mechanism of Example 2 includes a second driving mechanism and several clamping components 6 distributed front and back. After the second driving mechanism is actuated, it can drive several clamping components 6 to act together, thereby effectively clamping the patient's part to be punctured, such as the arm or thigh.

[0055] like Figure 5 and Figure 6 As shown, the second driving mechanism includes a second motor 4 , an intermediate transmission assembly 5 , a fixed rail 3 and a U-shaped slider 31 .

[0056] The fixed rail 3 corresponds to the clamping assembly 6 one by one, and the fixed rail 3 is installed on the outer side of the U-shaped cross plate 22; a U-shaped slider 31 is slidably engaged with the middle part of the fixed rail 3, and a U-shaped bracket 32 ​​is provided on the top of the fixed rail 3, and the bottom of the clamping assembly 6 is hinged on the corresponding U-shaped bracket 32 ​​and the U-shaped slider 31; the second motor 4 drives the U-shaped slider 31 to rise and fall along the fixed rail 3 through the intermediate transmission assembly 5; when the U-shaped slider 31 rises and falls, the clamping parts of the clamping assembly 6 approach or move away from each other.

[0057] The intermediate transmission assembly 5 includes a second drive gear 51 and an auxiliary gear 52. A pair of circular through holes are provided on the side of the U-shaped horizontal plate 22. The second motor 4 includes two arranged front and rear. A second motor 4 with its output end facing the outside of the U-shaped horizontal plate 22 is installed inside each circular through hole. The output shaft of each second motor 4 is connected to the second drive gear 51, that is, the rotation of the second motor 4 synchronously drives the rotation of the second drive gear 51. The auxiliary gear 52 is provided with a limiting swing arm 53 extending in its radial direction. That is, the gear teeth of the auxiliary gear 52 have a notch, and a limiting swing arm 53 extending in the radial direction of the auxiliary gear 52 is provided at the notch. The end of the limiting swing arm 53 away from the center of the auxiliary gear 52 is provided with a strip hole 531. The length of the strip hole 531 also extends in the radial direction of the auxiliary gear 52.

[0058] The U-shaped slider 31 is provided with a limiting pin 311, and each U-shaped slider 31 corresponds to an auxiliary gear 52 with a pair of overlapping limiting swing arms 53, that is, the limiting swing arms 53 of the two auxiliary gears 52 overlap when projected onto the U-shaped cross plate 22; the limiting pin 311 is inserted into the bar hole 531 and can move back and forth along the bar hole 531 of its corresponding pair of limiting swing arms 53; in the two pairs of auxiliary gears 52 corresponding to the two adjacent U-shaped sliders 31, the two auxiliary gears 52 located in the middle are meshed with each other; the auxiliary gears 52 located at the front and rear edges of the U-shaped cross plate 22 respectively mesh with the second driving gear 51; that is, after one of the auxiliary gears 52 rotates, the limiting pin 311 follows the U-shaped slider 31 to rise and fall along the fixed rail 3. At this time, the other auxiliary gear 52 corresponding to the current U-shaped slider 31 also rotates, thereby driving the auxiliary gear 52 corresponding to the other U-shaped slider 31 to rotate, and the transmission is carried out in sequence until all the auxiliary gears 52 rotate, and all the U-shaped sliders 31 slide at the same time.

[0059] Specifically, there are three fixed rails 3, and the front and rear sides of the fixed rail 3 located in the middle are both provided with widened ear seats 55 installed on the support plate 21; each widened ear seat 55 can be rotatably connected to two auxiliary gears 52 that are meshed with each other, that is, each widened ear seat 55 is rotatably connected to two auxiliary gears 52 close to each other corresponding to different U-shaped sliders 31; the outer side of the fixed rails 3 located at the edge is provided with a single ear seat 54 installed on the support plate 21; the auxiliary gear 52 meshing with the second drive gear 51 is installed on the single ear seat 54.

[0060] During actual operation, when the three U-shaped sliders 31 slide downward synchronously, the force borne by the entire structure can be evenly distributed among the U-shaped sliders 31, ensuring that each U-shaped slider 31 bears a reasonable load, reducing the risk of damage to a U-shaped slider 31 due to excessive force, thereby extending the service life of the entire structure.

[0061] In this embodiment, if Figure 7 and Figure 8 As shown, the clamping assembly 6 includes a first clamping plate 61 , a second clamping plate 62 , a third clamping plate 63 , a fixed swing arm 601 , a folding swing arm 602 , a connecting swing arm 603 , an extension connecting rod 604 , a first connecting rod 605 and a second connecting rod 606 .

[0062] The first splint 61 is installed on the top surface of the U-shaped horizontal plate 22; the second splint 62 is provided on the inner side of the fixed swing arm 601; the folding swing arm 602 includes a T-shaped vertical part and a horizontal part, and the third splint 63 is provided on the inner side of the vertical part; one end of the horizontal part is hinged to the first end of the connecting swing arm 603, and the other end is hinged to the second connecting rod 606; the first splint 61, the second splint 62 and the third splint 63 clamp the part to be punctured.

[0063] In some other embodiments, a U-shaped support pad 64 is further provided on the top surface of the U-shaped horizontal plate 22; the U-shaped support pad 64 and the third splint 63 are alternately distributed, and the supporting plane of the U-shaped support pad 64 is flush with the supporting plane of the third splint 63. Usually, the supporting plane of the U-shaped support pad 64 is larger, thereby improving the patient's usage experience.

[0064] The bottom of the fixed swing arm 601 is hinged to the opening of the U-shaped bracket 32 ​​through a fixed connecting shaft 607, and two symmetrically distributed triangular connecting plates 609 are hinged at both ends of the fixed connecting shaft 607. One end of the triangular connecting plate 609 is hinged to the side of the U-shaped slider 31. Specifically, the two ends of the first connecting rod 605 are hinged to the triangular connecting plate 609 and the protruding axis on the side of the U-shaped slider 31, and the other end of the triangular connecting plate 609 is hinged to the bottom of the extended connecting rod 604; there are two first connecting rods 605, and they are respectively located on opposite sides of the U-shaped slider 31.

[0065] The top of the fixed swing arm 601 is bent outward to present an L-shaped structure and is provided with a U-shaped opening. The connecting swing arm 603 is inserted into the U-shaped opening. One end of the connecting swing arm 603 is provided with a downward extending connecting ear seat 608, which is inserted into the U-shaped opening of the fixed swing arm 601. The connecting ear seat 608 is hinged at the top bending position of the fixed swing arm 601, and the second connecting rod 606 is hinged to the outer side of the fixed swing arm 601; the top of the extended connecting rod 604 is hinged to the second end of the connecting swing arm 603, and there is also a pair of second connecting rods 606, which are located on opposite sides of the fixed swing arm 601.

[0066] The fixed swing arm 601 and the second splint 62 are driven by the extended connecting rod 604 to hinge and swing along the fixed connecting shaft 607; at the same time, after the extended connecting rod 604 rotates, it drives the connecting swing arm 603, the folding swing arm 602, and the third splint 63 to hinge and swing along the connecting ear seat 608; the first splint 61, the second splint 62, and the third splint 63 clamp the patient's arm in a circular manner, and then the patient's arm is subjected to arterial puncture and blood sampling. The circularly distributed splints can fix the arm from multiple directions to form a stable annular support, which can more effectively limit unnecessary movement of the arm in all directions, including twisting, bending and shaking. During the arterial puncture process, even a slight movement may lead to puncture failure or the need to readjust the position of the puncture needle, and this stable fixation method greatly improves the accuracy of the puncture needle hitting the target artery.

[0067] Example 3

[0068] A method for using an arterial puncture auxiliary fixator is provided. The method is based on the arterial puncture auxiliary fixator of Example 2 and includes the following steps:

[0069] S1: When in use, place the base plate 1 on the operating table.

[0070] S2: After the first driving mechanism is activated, it drives the second sliding member 235 to move along the horizontal slide rail 24, and the first sliding member 234 slides along the inclined slide rail 111. During the sliding process, under the limiting action of the first sliding member 234 and the inclined slide rail 111, the support plate 21 and the U-shaped cross plate 22 rise along the fixed plate 11 and away from the base plate 1.

[0071] Specifically, when the patient is using the device, under the driving action of the first motor 231, the output shaft of the first motor 231 drives the first driving gear 233 to rotate synchronously, and the first driving gear 233 engages to drive the pair of L-shaped racks 232 to move relative to each other in an interlaced manner, and the L-shaped racks 232 drive the second sliding member 235 to slide inward along the horizontal slide rail 24, and drive the first sliding member 234 to slide along the inclined slide rail 111;

[0072] Under the limiting action of the first sliding member 234 and the inclined guide rail, the support plate 21 and the U-shaped cross plate 22 rise along the fixed plate 11 and away from the bottom plate 1 .

[0073] S3: Under the action of the second driving mechanism, the plurality of clamping assemblies 6 simultaneously clamp or release the patient's part to be punctured.

[0074] Specifically, the patient's puncture site (arm or thigh, etc.) is placed on the U-shaped support pad 64 and the first splint 61. Under the driving action of a pair of second motors 4, the second drive gear 51 connected to the second motor 4 rotates. After the second drive gear 51 drives the auxiliary gear 52 to rotate, the limiting swing arm 53 rotates, thereby driving all the auxiliary gears 52 to move, and the U-shaped slider 31 also descends along its corresponding fixed rail 3.

[0075] During the process of the U-shaped slider 31 descending along the fixed rail 3, the U-shaped slider 31 drives the triangular connecting plate 609 to swing along the fixed connecting shaft 607 through the first connecting rod 605. The triangular connecting plate 609 swings and drives the extended connecting rod 604 to swing. The swing of the extended connecting rod 604 drives the fixed swing arm 601 and the second clamping plate 62 to swing along the fixed connecting shaft 607.

[0076] The extended connecting rod 604 synchronously drives the connecting swing arm 603, the folding swing arm 602 and the third clamping plate 63 to hinge and swing along the connecting ear seat 608, and then drives the folding swing arm 602 and the third clamping plate 63 to further hinge and swing inward through a pair of second connecting rods 606;

[0077] The first clamping plate 61 , the second clamping plate 62 and the third clamping plate 63 perform an annular clamping on the patient's part to be punctured.

[0078] After the puncture is completed, the first clamping plate 61, the second clamping plate 62, and the third clamping plate 63 can be released from clamping the patient's puncture site by the reverse operation.

[0079] The annular clamping fixation of the present invention can fully expose the puncture site and keep it stable, and will not affect the medical staff's vision due to obstruction or interference of the fixing device, so that the patient feels more comfortable during the puncture process and reduces irritability and muscle tension caused by discomfort.

[0080] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the scope of protection of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the present invention should be regarded as the scope of protection of the present invention.

Claims

1. An arterial puncture auxiliary fixator, characterized in that: include: A base plate (1), a height adjustment mechanism (2) and a fixing mechanism; the fixing mechanism is used to clamp the patient's part to be punctured and is arranged on the height adjustment mechanism (2); the height adjustment mechanism (2) is located above the base plate (1); The bottom plate (1) is provided with a fixed plate (11) extending upward, and an inclined slide rail (111) is provided on the fixed plate (11); The height adjustment mechanism (2) comprises a support plate (21), a U-shaped transverse plate (22) and a moving assembly (23), wherein the U-shaped transverse plate (22) is buckled on the side of the support plate (21) facing away from the bottom plate (1); a horizontal slide rail (24) and a sliding opening (211) capable of allowing the fixed plate (11) to slide through the support plate (21) are provided on the support plate (21); The moving assembly (23) includes a first driving mechanism and a sliding assembly connected thereto; the first driving mechanism is mounted on a support plate (21); the sliding assembly includes a first sliding member (234) and a second sliding member (235); the first sliding member (234) is slidably connected to the inclined slide rail (111); and the second sliding member (235) is slidably connected to the horizontal slide rail (24).

2. The arterial puncture auxiliary fixator according to claim 1, characterized in that: The fixed plates (11) include two groups distributed front and back, and each group includes two groups distributed left and right; the left and right fixed plates (11) are respectively located on the left and right sides of the horizontal slide rail (24); The sliding assembly comprises two sliding members connected to the first driving mechanism and distributed front to back; the first sliding members (234) are correspondingly arranged on the left and right sides of the second sliding member (235).

3. The arterial puncture auxiliary fixator according to claim 2, characterized in that: The first driving mechanism is located between the left and right fixed plates (11), and comprises a first motor (231), an L-shaped rack (232) and a first driving gear (233); the first motor (231) is mounted on the support plate (21), and the output shaft is connected to the first driving gear (233); the L-shaped rack (232) has two front and rear distributed ones and is connected to the two second sliding members (235) in a one-to-one correspondence; the two L-shaped racks (232) are both engaged with the first driving gear (233).

4. The arterial puncture auxiliary fixator according to claim 1, characterized in that: The fixing mechanism comprises a second driving mechanism and a plurality of clamping assemblies (6) distributed front and back; the second driving mechanism comprises a second motor (4), an intermediate transmission assembly (5), a fixed rail (3) and a U-shaped slider (31); the fixed rail (3) corresponds to the clamping assembly (6) one by one and is installed on the outer side of the U-shaped cross plate (22); the U-shaped slider (31) is slidably connected to the fixed rail (3); a U-shaped bracket (32) is provided on the top of the fixed rail (3); the bottom of the clamping assembly (6) is hinged to the corresponding U-shaped bracket (32) and the U-shaped slider (31); the second motor (4) drives all the U-shaped sliders (31) to rise and fall along their corresponding fixed rails (3) through the intermediate transmission assembly (5); when the U-shaped slider (31) rises and falls, the clamping parts of the clamping assembly (6) approach or move away from each other.

5. The arterial puncture auxiliary fixator according to claim 4, characterized in that: The clamping assembly (6) comprises a first clamping plate (61), a second clamping plate (62), a third clamping plate (63), a fixed swing arm (601), a folding swing arm (602), a connecting swing arm (603), an extended connecting rod (604), a first connecting rod (605) and a second connecting rod (606); The first clamping plate (61) is mounted on the top surface of the U-shaped horizontal plate (22); the second clamping plate (62) is provided with an inner side of a fixed swing arm (601); the folding swing arm (602) comprises a T-shaped vertical portion and a horizontal portion, and the third clamping plate (63) is provided on the inner side of the vertical portion; one end of the horizontal portion is hinged to the first end of the connecting swing arm (603), and the other end is hinged to the second connecting rod (606); The bottom of the fixed swing arm (601) is hinged to the opening of the U-shaped bracket (32) through a fixed connecting shaft (607), and two symmetrically distributed triangular connecting plates (609) are hinged at both ends of the fixed connecting shaft (607). One end of the triangular connecting plate (609) is hinged to the side of the U-shaped slider (31) through a hinged first connecting rod (605), and the other end is hinged to the bottom of the extended connecting rod (604); the top of the fixed swing arm (601) is bent outward and provided with a U-shaped opening, the connecting swing arm (603) is snapped into the U-shaped opening, and the snapped-in portion is provided with a connecting ear seat (608), the connecting ear seat (608) is hinged to the top bending position of the fixed swing arm (601), and the second connecting rod (606) is hinged to the outer side of the fixed swing arm (601); The top of the extended connecting rod (604) is hinged to the second end of the connecting swing arm (603).

6. The arterial puncture auxiliary fixator according to claim 5, characterized in that: A U-shaped support pad (64) is also provided on the top surface of the U-shaped transverse plate (22); the U-shaped support pad (64) and the third clamping plate (63) are alternately distributed.

7. The arterial puncture auxiliary fixator according to claim 4, characterized in that: The intermediate transmission assembly (5) comprises: a second driving gear (51) and an auxiliary gear (52); the output shaft of the second motor (4) is connected to the second driving gear (51), and the second motor (4) comprises two front and rear distributed gears; the auxiliary gear (52) is provided with a limit swing arm (53) extending along its radial direction, and the limit swing arm (53) is provided with a strip-shaped hole (531); the U-shaped slider (31) is provided with a limit pin (311), and each of the U-shaped sliders (31) corresponds to a limit pin (311). The auxiliary gears (52) overlap the limiting swing arms (53); the limiting pins (311) are inserted into the strip holes (531) and can move back and forth along the strip holes (531) of the corresponding pair of limiting swing arms (53); the two pairs of auxiliary gears (52) corresponding to the two adjacent U-shaped sliders (31) are meshed with each other; the auxiliary gears (52) located at the front and rear edges of the U-shaped horizontal plate (22) are respectively meshed with the two second driving gears (51).

8. The arterial puncture auxiliary fixator according to claim 7, characterized in that: There are three fixed rails (3), and the front and rear sides of the fixed rail (3) located in the middle are both provided with widened ear seats (55) installed on the support plate (21); the outer sides of the fixed rails (3) located at the edges are both provided with single ear seats (54) installed on the support plate (21); the auxiliary gear (52) is rotatably connected to the single ear seat (54) or the widened ear seat (55).

9. A method for using an arterial puncture auxiliary fixator, based on the arterial puncture auxiliary fixator according to any one of claims 5 to 8, characterized in that: The following steps are involved: S1: When in use, place the base plate (1) on the operating table; S2: After the first driving mechanism is activated, the second sliding member (235) is driven to move along the horizontal slide rail (24), and the first sliding member (234) slides along the inclined slide rail (111). During the sliding process, under the limiting action of the first sliding member (234) and the inclined slide rail (111), the support plate (21) and the U-shaped cross plate (22) rise along the fixed plate (11) and away from the bottom plate (1); S3: Under the action of the second driving mechanism, the plurality of clamping assemblies (6) simultaneously clamp or release the patient's part to be punctured.

10. The method for using the arterial puncture auxiliary fixator according to claim 9, characterized in that: Step S3 includes clamping the patient's puncture site, specifically: The second driving mechanism drives all the U-shaped slide blocks (31) to descend along the fixed rail (3) in a one-to-one correspondence through the intermediate transmission assembly (5). During the sliding process, the first connecting rod (605) drives the triangular connecting plate (609) to swing along the fixed connecting shaft (607). After the triangular connecting plate (609) swings, it drives the extended connecting rod (604) to swing. The swing of the extended connecting rod (604) drives the fixed swing arm (601) and the second clamping plate (62) to swing along the fixed connecting shaft (607). The extended connecting rod (604) synchronously drives the connecting swing arm (603), the folding swing arm (602) and the third clamping plate (63) to perform hinged swing along the connecting ear seat (608), and then drives the folding swing arm (602) and the third clamping plate (63) to further hinge the swing arm inward through a pair of second connecting rods (606); The first clamping plate (61), the second clamping plate (62), and the third clamping plate (63) perform an annular clamping on the patient's part to be punctured.

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