Auxiliary device for vascular puncture

Abstract

The utility model provides an auxiliary device for vascular puncture. The auxiliary device comprises a base, a supporting rod, a first mechanical arm and a second mechanical arm, wherein the supporting rod is arranged on the base, and the first mechanical arm and the second mechanical arm are arranged on the supporting rod and can move in the axial direction of the supporting rod. By means of the first mechanical arm and the second mechanical arm, the ultrasonic probe can be fixed, meanwhile, accurate blood vessel puncture can be conducted, operation can be completed by a single person, the first mechanical arm and the second mechanical arm can flexibly adjust the direction and the angle through the spherical rotating joints and the like, and therefore sufficient space is reserved for puncture operation, and the puncture efficiency is improved. The ultrasonic probe is simple in structure and convenient to use, the stability of the ultrasonic probe in the puncture process can be guaranteed, target blood vessels can be punctured more accurately, meanwhile, non-wall-penetrating puncture can be achieved no matter whether a patient is difficult to puncture or not, a series of complications caused by traditional wall-penetrating puncture are reduced, and the situation that accurate blood vessel puncture is needed such as a nerve interventional operation becomes smoother.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to an auxiliary device for blood vessel puncture. Background Art

[0002] During surgeries such as neurointervention, we usually need to puncture blood vessels such as the femoral artery, femoral vein, and radial artery first. Successful puncture is a prerequisite for neurointervention. Even in the construction of a stroke center, the time of successful puncture is one of the assessment indicators.

[0003] In clinical practice, once encountering obese patients or patients with a large degree of blood vessel variation (patients with difficult punctures), repeated puncture failures often occur, resulting in time delay or inability to continue the surgery. In such situations, ultrasound guidance is often required. However, it is difficult for the ultrasound doctor and the surgeon to closely cooperate during the puncture process, and the puncture point often shifts after ultrasound positioning, and repeated positioning or even puncture still cannot be completed. In addition, the through-wall puncture in the seldinger technique that is often required for the above-mentioned patients with difficult punctures in clinical practice is likely to cause complications such as arteriovenous fistula and subcutaneous hematoma. Under ultrasound guidance, non-through-wall puncture can be used, thereby reducing the occurrence of the above-mentioned complications. Summary of the Utility Model

[0004] Based on this, the purpose of the utility model is to provide an auxiliary device for blood vessel puncture that is convenient for a single doctor to operate and is used in neurointervention surgery in cooperation with ultrasound guidance.

[0005] The utility model provides the following technical solutions: An auxiliary device for blood vessel puncture, including a base, a support rod provided on the base, a first robotic arm and a second robotic arm that can move axially along the support rod; both the first robotic arm and the second robotic arm include a first knob threadedly connected to the support rod, a slider slidably connected to the support rod, the slider being rotatably connected to the first knob, a connecting rod provided on the slider, a spherical rotating joint provided on the connecting rod, and a swinging rod provided on the spherical rotating joint. The swinging rod can swing in multiple directions through the spherical rotating joint and be fixed in the swinging direction; a guide for fixing a puncture needle is provided on the swinging rod of the first robotic arm, and a probe holder for fixing an ultrasound probe is provided on the swinging rod of the second robotic arm.

[0006] Further, the outer wall of the support rod is provided with an external thread, and the inner side of the first knob is provided with an internal thread. The first knob is threadedly connected to the external thread of the support rod through the internal thread.

[0007] Further, a groove is axially provided on the support rod, a part of the slider is located in the groove, and the slider is slidably connected to the support rod through the groove.

[0008] Further, the first robotic arm and the second robotic arm further include a fastener, the fastener includes a second screw threadedly connected to the slider, a rotating block provided on the second screw, and the second screw is on the same side as the groove.

[0009] Further, the spherical rotary joint includes a sphere provided on the connecting rod, a mounting sleeve movably connected to the sphere, the sphere is located inside the mounting sleeve, a friction block slidably connected in the mounting sleeve, a first screw threadedly connected to the mounting sleeve, and a rocker provided on the first screw. The first screw is rotationally connected to the friction block, and the swing rod is fixedly connected to the mounting sleeve.

[0010] Further, the guide includes a guide sleeve provided on the swing rod of the first robotic arm, a threaded sleeve slidably connected to the guide sleeve, a first clamping plate provided on the threaded sleeve, the first clamping plate is located inside the guide sleeve, a bracket provided on the guide sleeve, a third screw rotationally connected to the bracket, and a second knob provided on the third screw. The third screw is threadedly connected to the threaded sleeve.

[0011] Further, the probe holder includes a mounting block provided on the swing rod of the second robotic arm, a second clamping plate slidably connected to the mounting block, a fourth screw threadedly connected to the mounting block, a third knob provided on the fourth screw, and the fourth screw is rotationally connected to the second clamping plate.

[0012] The beneficial effects of the utility model are as follows: Through the first robotic arm and the second robotic arm, the goal of fixing the ultrasonic probe while performing precise blood vessel puncture can be achieved, and the operation can be completed by a single person. Both the first robotic arm and the second robotic arm utilize spherical rotary joints and the like to flexibly adjust the direction and angle, thereby leaving sufficient space for the puncture operation, and ensuring the stability of the ultrasonic probe during the puncture process, more precisely puncturing the target blood vessel. At the same time, whether it is a difficult-to-puncture patient or not, non-penetrating wall puncture can be achieved, reducing a series of complications brought by traditional penetrating wall puncture, and making situations such as neurointerventional surgery that require precise blood vessel puncture smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic three-dimensional structure diagram of the utility model.

[0014] Figure 2This is a three-dimensional structural schematic diagram of the first robotic arm or the second robotic arm of the present utility model.

[0015] Figure 3 This is a three-dimensional structural schematic diagram of the fastener of the present utility model.

[0016] Figure 4 This is a three-dimensional structural schematic diagram of the spherical rotating joint of the present utility model.

[0017] Figure 5 This is a three-dimensional structural schematic diagram of the guide of the present utility model.

[0018] Figure 6 This is a sectional three-dimensional structural schematic diagram of the guide of the present utility model.

[0019] Figure 7 This is a three-dimensional structural schematic diagram of the probe holder of the present utility model.

[0020] The reference signs in the drawings are: 1 - base, 2 - support rod, 3 - external thread, 4 - groove, 5 - first robotic arm, 51 - first knob, 52 - slider, 53 - connecting rod, 54 - spherical rotating joint, 541 - sphere, 542 - mounting sleeve, 543 - friction block, 544 - first screw, 545 - rocker arm, 55 - swing rod, 56 - fastener, 561 - second screw, 562 - rotating block, 6 - second robotic arm, 7 - guide, 71 - guide sleeve, 72 - bracket, 73 - third screw, 74 - threaded sleeve, 75 - first clamping plate, 76 - second knob, 8 - probe holder, 81 - mounting block, 82 - second clamping plate, 83 - fourth screw, 84 - third knob. Detailed implementation manners

[0021] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] An auxiliary device for vascular puncture, as Figure 1 and 2 shown, includes a base 1, a support rod 2 provided on the base 1, a first robotic arm 5 and a second robotic arm 6 that can move axially along the support rod 2; both the first robotic arm 5 and the second robotic arm 6 include a first knob 51 threadedly connected to the support rod 2, a slider 52 slidably connected to the support rod 2, the slider 52 being rotatably connected to the first knob 51, a connecting rod 53 provided on the slider 52, a spherical rotary joint 54 provided on the connecting rod 53, a swing rod 55 provided on the spherical rotary joint 54, and the swing rod 55 can swing in multiple directions through the spherical rotary joint 54 and be fixed in the swinging direction; a guide 7 for fixing a puncture needle is provided on the swing rod 55 of the first robotic arm 5, and a probe holder 8 for fixing an ultrasound probe is provided on the swing rod 55 of the second robotic arm 6.

[0025] Wherein, an external thread 3 is provided on the outer wall of the support rod 2, and an internal thread is provided on the inner side of the first knob 51. The first knob 51 is threadedly connected to the external thread 3 of the support rod 2 through the internal thread. A groove 4 is provided on the support rod 2 along its axial direction. A part of the slider 52 is located in the groove 4, and the slider 52 is slidably connected to the support rod 2 through the groove 4. It can be understood that the operator can rotate the first knob 51, and the rotation of the first knob 51 will drive the slider 52 to move along the axial direction of the support rod 2. The movement of the slider 52 drives the connecting rod 53 to move, the connecting rod 53 drives the spherical rotating joint 54 to move, and the spherical rotating joint 54 drives the swing rod 55. Thus, the height of the first robotic arm 5 or the second robotic arm 6 can be adjusted to facilitate the implementation of the surgery. The operator can operate the spherical rotating joint 54 to adjust the angle of the swing rod 55 so that the guiding sleeve 71 or the probe holder 8 can be adjusted in angle for the implementation of the surgery. The spherical rotating joint 54 is similar to the spherical rotating joint 54 of the commonly used Mayfield head frame in neurosurgical craniotomy. The spherical rotating joint 54 can provide more variable angles through rotation. Specifically, first, the ultrasonic probe is fixed on the probe holder 8. Then, after determining the position of the blood vessel puncture point through the ultrasonic probe, the spherical rotating joint 54 can be operated to fix the swing rod 55 to prevent the probe holder 8 from moving, thereby achieving the fixation of the ultrasonic probe. The functions of the first robotic arm 5 and the guide 7 are to assist in puncture. After adjusting the direction and angle during the operation, the puncture trocar can be placed in the guide 7 and puncture the blood vessel lumen under the guidance of the fixed ultrasonic probe. After confirming the success of the puncture, the guide 7 can be operated to fix the puncture needle, then the stylet is removed, a guide wire is inserted, and the operation of placing the vascular sheath is performed. During the operation, the distance between the first robotic arm 5 and the swing rod 55 in the first robotic arm 5 can be increased through the spherical rotating joint 54 of the first robotic arm 5. Increasing the distance of the swing rod 55 is also increasing the distance between the guide 7 and the probe holder 8, thereby providing a more flexible operating space for puncture. The auxiliary device for blood vessel puncture of the present utility model uses materials that can be sterilized at high temperature for repeated sterilization and use. Among them, the guide 7 uses a transparent material and is marked with scales thereon to observe the puncture state of the puncture needle.

[0026] As Figure 3 shown, the first robotic arm 5 and the second robotic arm 6 further include a fastener 56. The fastener 56 includes a second screw rod 561 threadedly connected to the slider 52, and a rotating block 562 provided on the second screw rod 561. The second screw rod 561 is on the same side as the groove 4.

[0027] It can be understood that after the height of the first robotic arm 5 or the second robotic arm 6 is adjusted, the operator can rotate the rotating block 562. The rotating block 562 drives the second screw rod 561, causing the second screw rod 561 to contact one side of the groove 4, thereby further limiting the slider 52 to prevent it from sliding up and down. Thus, after adjusting the height of the first robotic arm 5 or the second robotic arm 6, it is limited to prevent the operator from accidentally touching the first knob 51, which may cause the first robotic arm 5 or the second robotic arm 6 with the adjusted height to move. When the slider 52 needs to be moved, the operator can also rotate the rotating block 562 so that the second screw rod 561 no longer abuts against the bottom side of the groove 4, and the operator can then rotate the first knob 51 to move the slider 52.

[0028] As Figure 4 shown, the spherical rotating joint 54 includes a sphere 541 provided on the connecting rod 53, a mounting sleeve 542 movably connected to the sphere 541. The sphere 541 is located inside the mounting sleeve 542, a friction block 543 slidably connected in the mounting sleeve 542, a first screw rod 544 threadedly connected to the mounting sleeve 542, and a rocker arm 545 provided on the first screw rod 544. The first screw rod 544 is rotatably connected to the friction block 543, and the swing rod 55 is fixedly connected to the mounting sleeve 542.

[0029] It can be understood that when the operator needs the swing rod 55 to swing freely to adjust the position of the probe holder 8 or the guide 7, the operator can rotate the rocker arm 545. The rocker arm 545 drives the first screw rod 544 to rotate. The rotation of the first screw rod 544 will push the friction block 543 to move away from the sphere 541. At this time, the friction block 543 no longer contacts the sphere 541, and no friction force will be generated between the sphere 541 and the friction block 543. The mounting sleeve 542 can then move on the sphere 541, and the movable mounting sleeve 542 can make the swing rod 55 movable. Thus, the position of the probe holder 8 or the guide 7 can be adjusted. After the position of the probe holder 8 or the guide 7 is adjusted, the operator can reversely rotate the rocker arm 545 to make the first screw rod 544 push the friction block 543 to abut against the surface of the sphere 541. Thus, the mounting sleeve 542 will not easily move on the sphere 541, playing a role in fixing the swing rod 55 at the adjusted angle.

[0030] As Figure 5 shown, the guide 7 includes a guide sleeve 71 provided on the swing rod 55 of the first robotic arm 5, a threaded sleeve 74 slidably connected to the guide sleeve 71, a first clamping plate 75 provided on the threaded sleeve 74. The first clamping plate 75 is located inside the guide sleeve 71, a bracket 72 provided on the guide sleeve 71, a third screw rod 73 rotatably connected to the bracket 72, and a second knob 76 provided on the third screw rod 73. The third screw rod 73 is threadedly connected to the threaded sleeve 74.

[0031] It can be understood that the operator can insert the puncture needle into the guiding sleeve 71 and puncture the blood vessel lumen under the guidance of the ultrasonic probe. After successful puncture, the operator can rotate the second knob 76. The second knob 76 drives the third screw rod 73 to rotate. The rotation of the third screw rod 73 drives the threaded sleeve 74 to move towards the puncture needle, and the first clamping plate 75 will press and fix the puncture needle. On the contrary, the operator can rotate the second knob 76. The second knob 76 drives the third screw rod 73 to rotate, so that the threaded sleeve 74 and the first clamping plate 75 move away from the puncture needle, and thus the first clamping plate 75 no longer presses and fixes the puncture needle.

[0032] As Figure 6 shown, the probe holder 8 includes a mounting block 81 provided on the swing rod 55 of the second robotic arm 6, a second clamping plate 82 slidably connected to the mounting block 81, a fourth screw rod 83 threadedly connected to the mounting block 81, a third knob 84 provided on the fourth screw rod 83, and the fourth screw rod 83 is rotatably connected to the second clamping plate 82.

[0033] It can be understood that the operator can place the ultrasonic probe at the notch of the mounting block 81, and then by rotating the third knob 84, the third knob 84 drives the fourth screw rod 83 to rotate. The fourth screw rod 83 drives the second clamping plate 82 to move towards the second clamping plate 82 to press and fix the ultrasonic probe. On the contrary, to remove the ultrasonic probe, only the third knob 84 needs to be rotated in the reverse direction, so that the fourth screw rod 83 rotates to drive the second clamping plate 82 to move away from the ultrasonic probe.

[0034] In summary, through the first robotic arm 5 and the second robotic arm 6, the goal of fixing the ultrasonic probe while performing precise blood vessel puncture can be achieved, and the operation can be completed by a single person. The first robotic arm 5 and the second robotic arm 6 both use spherical rotating joints 54 and the like to flexibly adjust the direction and angle, so as to leave sufficient space for the puncture operation, and can ensure the stability of the ultrasonic probe during the puncture process, more accurately puncture the target blood vessel. At the same time, whether it is a difficult-to-puncture patient or not, non-penetrating wall puncture can be achieved, reducing a series of complications caused by traditional penetrating wall puncture, making situations such as neurointerventional surgery that require precise blood vessel puncture smoother.

[0035] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. An auxiliary device for vascular puncture, characterized in that, It includes a base, a support rod provided on the base, a first robotic arm and a second robotic arm that can move axially along the support rod; both the first robotic arm and the second robotic arm include a first knob threadedly connected to the support rod, a slider slidably connected to the support rod, the slider being rotatably connected to the first knob, a connecting rod provided on the slider, a spherical rotating joint provided on the connecting rod, and a swing rod provided on the spherical rotating joint. The swing rod can swing in multiple directions through the spherical rotating joint and be fixed in the swinging direction; a guide for fixing a puncture needle is provided on the swing rod of the first robotic arm, and a probe holder for fixing an ultrasound probe is provided on the swing rod of the second robotic arm.

2. The auxiliary device for vascular puncture according to claim 1, wherein, External threads are provided on the outer wall of the support rod, and internal threads are provided on the inner side of the first knob. The first knob is threadedly connected to the external threads of the support rod through the internal threads.

3. The auxiliary device for vascular puncture according to claim 1, wherein A groove is provided along the axial direction of the support rod. A part of the slider is located in the groove, and the slider is slidably connected to the support rod through the groove.

4. The auxiliary device for vascular puncture according to claim 3, characterized in that, The first robotic arm and the second robotic arm further include a fastener. The fastener includes a second screw threadedly connected to the slider, a rotating block provided on the second screw, and the second screw is on the same side as the groove.

5. The auxiliary device for vascular puncture according to claim 1, characterized in that, The spherical rotating joint includes a sphere provided on the connecting rod, a mounting sleeve movably connected to the sphere, the sphere being located inside the mounting sleeve, a friction block slidably connected in the mounting sleeve, a first screw threadedly connected to the mounting sleeve, and a rocker arm provided on the first screw. The first screw is rotatably connected to the friction block, and the swing rod is fixedly connected to the mounting sleeve.

6. The auxiliary device for vascular puncture according to claim 1, characterized in that, The guide includes a guide sleeve provided on the swing rod of the first robotic arm, a threaded sleeve slidably connected to the guide sleeve, a first clamping plate provided on the threaded sleeve, the first clamping plate being located inside the guide sleeve, a bracket provided on the guide sleeve, a third screw rotatably connected to the bracket, and a second knob provided on the third screw. The third screw is threadedly connected to the threaded sleeve.

7. The auxiliary device for vascular puncture according to claim 1, characterized in that, The probe holder includes a mounting block provided on the swing rod of the second robotic arm, a second clamping plate slidably connected to the mounting block, a fourth screw threadedly connected to the mounting block, a third knob provided on the fourth screw, and the fourth screw is rotatably connected to the second clamping plate.

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