CN114191033A

CN114191033A - Cardiovascular puncture clamp

Info

Publication number: CN114191033A
Application number: CN202111525214.7A
Authority: CN
Inventors: 聂晓东; 丁清清
Original assignee: Affiliated Hospital Of Henan Medical College
Current assignee: Affiliated Hospital Of Henan Medical College
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-03-18

Abstract

The invention relates to a cardiovascular puncture clamp which comprises a pressing device and a binding belt, wherein the pressing device comprises a shell, a driving mechanism and a pressing mechanism, a control cylinder is connected to the top surface of the shell, the driving mechanism comprises a driving block, a driving wheel and a motor, the driving block is a chamfered cylinder, the pressing mechanism comprises a pressing block, a connecting rod and a connecting ring, and the pressing block is a hollow elliptic cylindrical bag body. The pneumatic pressing block can simulate the strength and softness of fingers and can not cause discomfort to a patient due to over hardness, the driving mechanism can enable the driving block to push the pressing block to press the pressing part with strength change at a certain rotating speed, massage is formed, pressing on the puncture point is not influenced, thrombosis caused by over-high pressing force and over-long pressing time can be prevented, and blood vessels of the puncture point can not bleed due to the fact that the pressing force always exists.

Description

Cardiovascular puncture clamp

Technical Field

The invention relates to the technical field of cardiovascular, in particular to a cardiovascular puncture clamp.

Background

Cardiovascular diseases, also known as circulatory diseases, are a series of diseases related to the circulatory system, which refers to the organs and tissues transporting blood in the human body, mainly including the heart, vascular arteries, veins, and capillaries, and can be subdivided into acute and chronic diseases, and are generally related to arteriosclerosis. Some cardiovascular diseases treatment methods are arteriovenous puncture, after clinical cardiovascular radiography percutaneous puncture, when femoral artery is pulled out and after the femoral artery is pulled out, in order to achieve the purpose of timely hemostasis, puncture parts need to be compressed, a nurse needs to accurately press puncture points by fingers or to adopt a sand bag to assist in compressing for 1-4 hours to prevent puncture blood vessel bleeding, because the compression time is too long or the sand bag is too heavy, the femoral artery or vein thrombosis is likely to be caused, the puncture points of patients need to be frequently observed, and the compression parts are frequently slightly shifted or massaged to prevent the problems, but the hospital work task is heavy, each patient cannot be provided with a nurse special for pressing the blood outlet point, and therefore, a device special for pressing and adjusting the puncture points is needed.

Patent document No. 201821733217.3 discloses a cardiovascular puncture clip. The clamp comprises an upper clamp, a lower clamp and an extension block, wherein a through hole is formed in the top end of the extension block on the left side of the upper clamp, a lock catch is fixed on the left side of the through hole, and an adjusting belt is fixedly connected to the top of the extension block on the left side of the lower clamp; a telescopic rod is fixed at the top of the extension block on the right side of the lower hoop, the other end of the telescopic rod is hinged in a groove formed in the bottom of the extension block on the right side of the upper hoop, and a spring is arranged on the right side of the telescopic rod; the center position of going up the clamp is provided with the sleeve, and telescopic inner chamber upper portion spiral connection has screw rod, and its inner chamber lower part sliding connection has the press ram, and the press ram bottom mounting has thumb shape silica gel piece. Although the device has a certain pressing function, the device cannot be pressed by a human hand because of fixed position, and thrombosis is easily caused in the same part because of excessive pressing or long-time pressing.

Disclosure of Invention

In order to solve the problem that the femoral artery or vein is possibly thrombosed due to overlong compression time or overweight compression after the cardiovascular puncture is performed, the invention provides the cardiovascular puncture clamp, which aims to replace a nurse to automatically and straightly shift and massage a puncture point, reduce the possibility of thrombogenesis of the femoral artery or vein during compression and reduce the workload of the nurse.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a cardiovascular puncture clamp comprises a pressing device and a binding belt;

the pressing device comprises a shell, a driving mechanism and a pressing mechanism, wherein the shell is a hollow cuboid with an opening at the lower end, the lower ends of the left and right outer side walls of the shell are connected with a binding band, a first circular through hole penetrating through a top plate of the shell is formed in the center of the top surface of the shell, a control cylinder is connected onto the top surface of the shell, the control cylinder is a circular pipe body, the inner diameter of the control cylinder is larger than the diameter of the first circular through hole, sliding grooves are formed in the left and right ends of the inner wall of the control cylinder along the height direction of the control cylinder, an integrated internal thread is formed in the inner side wall of the control cylinder outside the sliding grooves, arc-shaped grooves penetrating through the front and rear side walls of the shell are formed at the lower ends of the front and rear side walls of the shell, a bearing plate is arranged in the upper part of the shell and divides the space inside the shell into an upper part and a lower part, and a second circular through hole corresponding to the first circular through hole is formed in the bearing plate;

the driving mechanism comprises a driving block, a driving wheel and a motor, the driving block is a beveled cylinder with a horizontal top surface and an inclined bottom surface, the driving block is arranged in a shell below the bearing plate, a first annular groove is arranged on the bottom surface of the driving block, a connecting pipe is connected with the center of the driving block, the connecting pipe is a beveled multi-prism-shaped pipe with a flat top surface and an inclined bottom surface, the inner peripheral wall of the connecting pipe is a cylindrical surface, the upper end of the connecting pipe upwards penetrates through a second circular through hole and the first circular through hole and extends into the upper part of the control cylinder, the lower end of the connecting pipe and the bottom surface of the driving block are on the same inclined plane, the edge of the connecting pipe is in sliding contact with the inner peripheral walls of the first circular through hole and the second circular through hole, the driving wheel is a cylinder, teeth are arranged on the outer peripheral wall of the driving wheel, and a groove, which penetrates through the upper surface and the lower surface of the driving wheel, is arranged in the center of the driving wheel, The driving wheel is sleeved outside the connecting pipe between the shell and the bearing plate through the polygonal hole, the upper surface and the lower surface of the driving wheel are respectively in sliding contact with the inner top surface of the shell and the upper surface of the bearing plate, the motor is connected to the outer wall of the shell, an output shaft of the motor penetrates through the shell and is positioned between the shell and the bearing plate, a worm meshed with teeth at the front end of the driving wheel is connected to the output shaft of the motor, a storage battery is arranged on the shell, and the storage battery is connected with the motor through a lead with a switch;

the pressing mechanism comprises a pressing block, a connecting rod and a connecting ring, the pressing block is a hollow elliptical cylinder in a shell below a driving block, the horizontal section of the pressing block is elliptical with a long axis arranged along the front-back direction, a core pipe which is connected with the inner top surface and the inner bottom surface of the pressing block and coaxial with the pressing block is arranged in the pressing block, the core pipe is a pipe body with an elliptical section and the long axis direction consistent with the long axis direction of the horizontal section of the pressing block, a plurality of vertical partition plates are arranged in a space between the core pipe and the pressing block at intervals, the space between the pressing block and the core pipe is divided into a plurality of mutually independent chambers by the plurality of partition plates, the chambers at the front end and the rear end of the long axis of the horizontal section of the pressing block are respectively communicated with the core pipe through air holes in the peripheral walls at the front side and the rear side of the core pipe, the center of the top surface of the pressing block is connected with the connecting rod which penetrates upwards in the connecting pipe, and the upper end of the connecting rod is connected with a limiting plate in a control cylinder above the connecting pipe, the left end and the right end of the limiting plate are respectively provided with a fin plate, the fin plates extend into the sliding groove and are in sliding contact with the sliding groove, an adjusting column is arranged above the limiting plate, the adjusting column is screwed into the control cylinder through external threads, the lower end of the adjusting column is propped against the upper surface of the limiting plate, a connecting ring connected to the top surface of the pressing block is sleeved on the periphery of a connecting rod between the pressing block and the driving block, the diameter of the inner ring of the connecting ring is larger than the outer diameter of the connecting rod, the diameter of the outer ring is larger than or equal to the length of the long axis of the horizontal section of the pressing block, a second annular groove is arranged on the upper surface of the connecting ring, the driving block is propped against the top of the pressing block through the connecting ring to form a slope shape corresponding to the slope surface of the lower surface of the driving block, and when the top of the pressing block is propped by the driving block to form a slope shape corresponding to the slope surface of the lower surface of the driving block, the second annular groove and the first annular groove are opposite to form a limiting groove, a plurality of balls are arranged in the limiting groove at intervals.

Through the technical scheme, the invention has the beneficial effects that:

as a device for pressing a puncture point after puncture, the pressing mechanism can simulate the pressing state of fingers, and the pressing block with air sealed inside can simulate the strength and softness of the fingers, so that patients are not uncomfortable due to over hardness.

The driving mechanism of the invention can lead the driving block to push the pressing block to press the pressing part with strength change at a certain rotating speed, thus forming massage without influencing the pressing of the puncture point, preventing thrombosis caused by over-high pressing force and over-long pressing time, and preventing blood vessel of the puncture point from bleeding because of the constant pressing force.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the pressing device of the present invention;

FIG. 3 is a cross-sectional front view of the pressing device of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

FIG. 5 is a sectional view taken along line B-B of FIG. 3;

FIG. 6 is a schematic structural view of the pressing mechanism of the present invention;

fig. 7 is a schematic view of the connection of the driving block and the connection pipe of the present invention.

The reference numbers in the drawings are as follows: the device comprises a belt 1, a shell 2, a driving mechanism 3, a pressing mechanism 4, a control cylinder 5, a sliding groove 6, an arc-shaped groove 7, a bearing plate 8, a driving block 9, a driving wheel 10, a motor 11, a first annular groove 12, a connecting pipe 13, a worm 14, a storage battery 15, a pressing block 16, a connecting rod 17, a connecting ring 18, a core pipe 19, a partition plate 20, a limiting plate 21, a fin plate 22, an adjusting column 23, a second annular groove 24, a ball 25, a compression spring 26, an adjusting hole 27 and an anti-skid layer 28.

Detailed Description

The invention is further described with reference to the following figures and detailed description:

it should be noted that directional terms used in the following description such as "front", "back", "left", "right", "up", "down", "bottom" and "top" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 7, a cardiovascular puncture clamp comprises a pressing device and a belt 1;

the pressing device comprises a shell 2, a driving mechanism 3 and a pressing mechanism 4, wherein the shell 2 is a hollow cuboid with an opening at the lower end, the lower ends of the left and right outer side walls of the shell 2 are connected with a binding band 1, the center of the top surface of the shell 2 is provided with a first circular through hole penetrating through the top plate of the shell 2, the top surface of the shell 2 is connected with a control cylinder 5, the control cylinder 5 is a round pipe body, the inner diameter of the control cylinder 5 is larger than the diameter of the first circular through hole, the left and right ends of the inner wall of the control cylinder 5 are both provided with a sliding groove 6 along the height direction of the control cylinder 5, the upper end of the sliding groove 6 penetrates through the top surface of the control cylinder 5, the lower end of the sliding groove 6 penetrates through the bottom surface of the control cylinder 5, the inner side wall of the control cylinder 5 outside the sliding groove 6 is provided with an integral internal thread, the lower ends of the front and back side walls of the shell 2 are both provided with arc grooves 7 with downward openings, and a bearing plate 8 is arranged in the upper part of the shell 2, the bearing plate 8 divides the space inside the shell 2 into an upper part and a lower part, and a second circular through hole corresponding to the first circular through hole is formed in the bearing plate 8;

the driving mechanism 3 comprises a driving block 9, a driving wheel 10 and a motor 11, the driving block 9 is a beveled cylinder with a horizontal top surface and an inclined bottom surface, the driving block 9 is arranged in the housing 2 below the bearing plate 8, a first annular groove 12 is arranged on the bottom surface of the driving block 9, the first annular groove 12 is an annular groove body which is recessed towards the inside of the driving block 9 and has a downward opening, the projection of the first annular groove 12 on the horizontal surface and the projection of the driving block 9 on the horizontal surface are in a concentric state, a connecting pipe 13 is connected with the center inside of the driving block 9, the connecting pipe 13 is a beveled polygonal column-shaped pipe body with a flat top surface and an inclined bottom surface, the inner peripheral wall of the connecting pipe 13 is a cylindrical surface, the upper end of the connecting pipe 13 upwards passes through a second circular through hole and a first circular through hole and extends into the upper part of the control cylinder 5, and the lower end of the connecting pipe 13 and the bottom surface of the driving block 9 are on the same inclined surface, the edges of the connecting pipe 13 are in sliding contact with the inner peripheral walls of the first circular through hole and the second circular through hole, the driving wheel 10 is a cylinder, teeth are arranged on the outer peripheral wall of the driving wheel 10, a polygonal hole which penetrates through the upper surface and the lower surface of the driving wheel 10 and corresponds to the cross section of the connecting pipe 13 is arranged in the center of the driving wheel 10, the driving wheel 10 is sleeved outside the connecting pipe 13 between the inner top surface of the shell 2 and the upper surface of the bearing plate 8 through the polygonal hole, the upper surface and the lower surface of the driving wheel 10 are in sliding contact with the inner top surface of the shell 2 and the upper surface of the bearing plate 8 respectively, the motor 11 is connected to the outer wall of the right side of the shell 2, an output shaft of the motor 11 penetrates through the right side wall of the shell 2 and is positioned between the inner top surface of the shell 2 and the upper surface of the bearing plate 8, a worm 14 which is engaged with the teeth at the front end of the driving wheel 10 is connected to the output shaft of the motor 11, and a storage battery 15 is arranged on the outer wall of the left side of the shell 2, the storage battery 15 is connected with the motor 11 through a lead with a switch;

the pressing mechanism 4 comprises a pressing block 16, a connecting rod 17 and a connecting ring 18, the pressing block 16 is a hollow elliptic cylinder in the shell 2 below the driving block 9, the horizontal section of the pressing block 16 is an ellipse with a long axis arranged along the front-back direction, a core tube 19 which is connected with the inner top surface and the inner bottom surface of the pressing block 16 and is coaxial with the pressing block 16 is arranged in the pressing block 16, the core tube 19 is a tube body with an elliptic section and a long axis direction consistent with the long axis direction of the horizontal section of the pressing block 16, a plurality of vertical partition plates 20 are arranged in the space between the core tube 19 and the pressing block 16 at intervals, the partition plates 20 are rectangular plate bodies, the edges of the partition plates 20 are respectively connected with the outer peripheral wall of the core tube 19, the inner top surface of the pressing block 16, the inner peripheral wall of the pressing block 16 and the inner bottom surface of the pressing block 16, and the space between the pressing block 16 and the core tube 19 is divided into a plurality of independent chambers by the partition plates 20, the cavity that is located both ends around the horizontal cross section major axis of press block 16 communicates with core pipe 19 through the gas pocket on the perisporium of core pipe 19 front and back both sides respectively, the top surface center of press block 16 is connected with upwards wears the connecting rod 17 of dress in connecting pipe 13, connecting rod 17 is the round bar body of periphery wall and connecting pipe 13 inner wall sliding contact, and the limiting plate 21 that is located the control section of thick bamboo 5 of connecting pipe 13 top is connected with to the connecting rod 17 upper end, limiting plate 21 is the round plate body, and the diameter of limiting plate 21 is greater than the circumscribed circle diameter of connecting pipe 13, is less than the internal diameter of control section of thick bamboo 5, and the both ends are provided with fin plate 22 respectively about limiting plate 21, fin plate 22 stretches into spout 6 in, with spout 6 sliding contact, are provided with regulation post 23 above the limiting plate 21, regulation post 23 is the cylinder that the periphery wall is provided with the external screw thread, adjusts post 23 and screws into in the control section of thick bamboo 5 through the external thread, the lower end of the adjusting column 23 is pressed against the upper surface of the limit plate 21, the connecting rod 17 between the pressing block 16 and the driving block 9 is sleeved with a connecting ring 18 connected with the top surface of the pressing block 16, the connecting ring 18 is a circular plate, the diameter of the inner ring of the connecting ring 18 is larger than the outer diameter of the connecting rod 17, the diameter of the outer ring is larger than or equal to the length of the long axis of the horizontal section of the pressing block 16, the upper surface of the connecting ring 18 is provided with a second annular groove 24, the driving block 9 is pressed against the top of the pressing block 16 through the connecting ring 18 to form a slope shape at the top of the pressing block 16 corresponding to the slope surface of the lower surface of the driving block 9, when the top of the pressing block 16 is pressed by the driving block 9 in a slope shape corresponding to the slope of the lower surface of the driving block 9, the second annular groove 24 and the first annular groove 12 are opposite to each other up and down to form a limiting groove, and a plurality of balls 25 are arranged in the limiting groove at intervals.

The outer peripheral wall of the connecting pipe 13 is sleeved with a compression spring 26 between the lower surface of the limit plate 21 and the top surface of the shell 2.

The front side plate and the rear side plate of the shell 2 are transparent plate bodies.

The height of the adjusting column 23 is consistent with that of the control cylinder 5, and the adjusting column 23 is provided with triangular adjusting holes 27 which penetrate through the front end and the rear end of the upper part of the adjusting column 23.

The pressing block 16 is a hollow elliptic cylinder with elasticity made of rubber or silica gel, the core pipe 19 is a pipe body made of rubber or silica gel, and the partition plate 20 is a rectangular plate body made of rubber or silica gel.

The width of band 1 equals the width of casing 2, band 1 includes the left side area body and the right side area body, and the left side area body and the right side area body are inelastic banded body, and lateral surface lower extreme about the casing is connected respectively to the left side area body and the right side area body upper end, and the left side area body lower extreme can be dismantled with the right side area body and connect and constitute the annular.

The right side face of the left belt body, the left side face of the right belt body and the inner top face of the arc-shaped groove 7 are all provided with an anti-skid layer 28 made of silica gel.

The connecting pipe 13 is 4 prisms, 6 prisms or 8 prisms.

The length of the long axis of the horizontal section of the pressing block 16 is 2-3cm, and the length of the short axis is 1.5-2 cm.

The bearing plate 8 is a rectangular plate body horizontally arranged, and the peripheral wall of the bearing plate 8 is connected with the inner peripheral wall of the shell 2.

The motor 11 adopts a JS30 micro brush direct current motor, and the storage battery 15 adopts a BL-5C mobile phone battery.

When the puncture needle is used, the puncture needle is connected to a puncture part through the belt 1, the long axis direction of the horizontal section of the pressing block 16 is along the needle inserting direction of the puncture needle, the front part of the lower surface of the pressing block 16 is aligned with an exposed needle hole of a puncture point on skin, the rear part of the lower surface of the pressing block 16 is pressed on the skin outside a blood vessel needle hole, the pressing mechanism 4 is adjusted to move downwards through the adjusting column 23, and the pressing force of the pressing block 16 is adjusted.

The switch is turned on to start the motor 11, the motor 11 drives the driving wheel 10 to rotate slowly through the worm 14, the driving wheel 10 drives the connecting pipe 13 and the driving block 9 to rotate when rotating, the driving block 9 presses the connecting ring 18 downwards through the ball 25 in the rotating process, so that the lower surface of the pressing block 16 forms a cyclic pressing state of firstly increasing and then decreasing the lower pressure degree on the skin, the action of pressing the finger of a nurse is simulated, the fixed pressure with the same strength is not always used at the same position, but a micro-motion state is formed on the skin around the puncture point after the puncture point on the skin is pressed, so that the skin around the puncture point forms massage and guidance due to the constantly changing pressing strength, the skin blood around the puncture point can circulate, the thrombus or ischemia caused by the overlarge pressing strength and the overlong pressing time is prevented, and the pressing strength always exists above the puncture point, the blood vessel at the puncture site will not bleed.

The interior of the pressing block 16 is divided into a plurality of chambers, therefore, when the left part of the pressing block 16 is pressed down by the lower end of the inclined surface of the lower surface of the driving block 9, the chambers at the left part of the pressing block 16 do not affect the chambers which are not communicated with each other at the opposite side, but can increase the pressing force to the skin because the driving block 9 presses down, and when the lower end of the inclined surface of the lower surface of the driving block 9 rotates to press down to the right part of the pressing block 16, the pressing force to the skin can be reduced because the left end of the pressing block 16 is changed into the higher end of the inclined surface because the left end of the driving block 9.

Because the pressing force corresponding to the puncture point cannot be greatly changed when the puncture point is pressed, the chambers communicated with the front and the back of the core tube 19 and the core tube 19 are pressed on the skin surface and the puncture point on the blood vessel together, when the lowest point of the driving block 9 rotates to the front end or the back end of the long axis direction of the pressing block 16, the air in the chambers is transferred into the chamber on the side of the raised lower surface of the driving block 9 from the core tube 19, so that the air in the chambers communicated with the front and the back of the core tube 19 and the core tube 19 is redistributed, and because one end of the driving block 9 is pressed down and the other end is raised up, the total volume of the chambers communicated with the front and the back of the core tube 19 is not changed, the air pressure in the chambers communicated with the front and the back of the core tube 19 is not changed basically, and the requirement that the pressing pressure cannot be changed greatly can be met.

The driving wheel 10 and the worm 14 form a worm gear mechanism, and the worm gear mechanism is a large-scale speed reduction mechanism, so that the change speed of the pressing force of the pressing block 16 is not too fast, the pressing force is only slowly changed, the skin around the pressed puncture point has time to recover blood circulation, and meanwhile, the skin can be clearly sensed by a patient due to the action of the change of the pressing force, so that the patient can be reminded of paying attention to the wound, and the situation that the wound is forgotten due to long-term carelessness or touched due to carelessness, so that the pressing position is deviated, is avoided.

The regulation post 23 is last to be provided with the triangle-shaped regulation hole 27 that runs through both ends around regulation post 23 upper portion, on the one hand only need insert the body of rod that matches in regulation hole 27 and can rotate the regulation post, and the pressure degree is pressed in regulation that can be convenient, and on the other hand has got rid of the handle for the regulation post in other words, and the regulation post is a cylindricality only, does not have unnecessary part, can avoid pressing the in-process because the quilt is colluded and is hung and cause the passive rotation of regulation post, influences and presses the pressure degree.

The regulation hole sets up to triangle-shaped also makes the patient be difficult to find corresponding rod-shaped body, and inconvenient regulation by oneself, adjusts at every turn and all needs communicate with medical personnel, has strengthened medical personnel's grasp to patient's postoperative care condition to and different patients need different according to the relation of pressure intensity when the postoperative is pressed, can increase the operation experience, make follow-up nursing more smooth, also can avoid the problem that the accident appears and is difficult to return to the official account among the medical process.

Because the pressing block 16 is an elastic hollow elliptic cylinder made of rubber or silica gel, the space between the pressing block 16 and the core tube 19 is divided into a plurality of independent chambers by the plurality of partition plates 20, and the space between each chamber and the space in the core tube 19 is filled with air sealed in the pressing block, the pressing block 16 sealed with air in the pressing block can simulate the strength and softness of fingers after puncture, and can not cause discomfort to patients due to over hardness, thereby improving the use comfort.

The driving mechanism 3 of the invention can make the driving block 9 press the pressing block 16 at a certain rotating speed to press the pressed part with a force change, thereby forming massage and simultaneously not influencing the pressing of puncture points.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made to the technical solution of the present invention within the scope of disclosure without departing from the spirit of the present invention.

Claims

1. A cardiovascular puncture clamp, which is characterized by comprising a pressing device and a belt (1);

the pressing device comprises a shell (2), a driving mechanism (3) and a pressing mechanism (4), wherein the shell (2) is a hollow cuboid with an opening at the lower end, the lower ends of the left and right outer side walls of the shell (2) are connected with a binding band (1), a first circular through hole penetrating through a top plate of the shell (2) is arranged in the center of the top surface of the shell (2), a control cylinder (5) is connected onto the top surface of the shell (2), the control cylinder (5) is a circular tube body, the inner diameter of the control cylinder (5) is larger than the diameter of the first circular through hole, sliding grooves (6) are arranged at the left and right ends of the inner wall of the control cylinder (5) along the height direction of the control cylinder (5), integral internal threads are arranged on the inner side wall of the control cylinder (5) outside the sliding grooves (6), arc-shaped grooves (7) penetrating through the front and back side walls of the shell (2) are arranged at the lower ends of the front and back side walls of the shell (2), and a bearing plate (8) is arranged in the upper part of the shell (2), the bearing plate (8) divides the space inside the shell (2) into an upper part and a lower part, and a second circular through hole corresponding to the first circular through hole is formed in the bearing plate (8);

the driving mechanism (3) comprises a driving block (9), a driving wheel (10) and a motor (11), the driving block (9) is a beveled cylinder with a horizontal top surface and an inclined bottom surface, the driving block (9) is arranged in a shell (2) below a bearing plate (8), a first annular groove (12) is arranged on the bottom surface of the driving block (9), a connecting pipe (13) is connected inside the center of the driving block (9), the connecting pipe (13) is a beveled multi-prism-shaped pipe body with a plane top surface and an inclined bottom surface, the inner peripheral wall of the connecting pipe (13) is a cylindrical surface, the upper end of the connecting pipe (13) upwards penetrates through a second circular through hole and a first circular through hole and extends into the upper part of the control cylinder (5), the lower end of the connecting pipe (13) and the bottom surface of the driving block (9) are on the same inclined surface, and the edges of the connecting pipe (13) are in sliding contact with the inner peripheral walls of the first circular through hole and the second circular through hole, the driving wheel (10) is a cylinder, teeth are arranged on the peripheral wall of the driving wheel (10), a polygonal hole which penetrates through the upper surface and the lower surface of the driving wheel (10) and corresponds to the cross section of the connecting pipe (13) is arranged in the center of the driving wheel (10), the driving wheel (10) is sleeved outside the connecting pipe (13) between the shell (2) and the bearing plate (8) through the polygonal hole, the upper surface and the lower surface of the driving wheel (10) are respectively in sliding contact with the inner top surface of the shell (2) and the upper surface of the bearing plate (8), the motor (11) is connected to the outer wall of the shell (2), an output shaft of the motor (11) penetrates through the shell (2) and is positioned between the inner top surface of the shell (2) and the upper surface of the bearing plate (8), a worm (14) which is meshed with the teeth at the front end of the driving wheel (10) is connected to the output shaft of the motor (11), and a storage battery (15) is arranged on the shell (2), the storage battery (15) is connected with the motor (11) through a lead with a switch;

the pressing mechanism (4) comprises a pressing block (16), a connecting rod (17) and a connecting ring (18), the pressing block (16) is a hollow elliptic cylinder body located in the shell (2) below the driving block (9), the horizontal section of the pressing block (16) is in an elliptic shape with a long axis arranged along the front-back direction, a core pipe (19) which is connected with the inner top surface and the inner bottom surface of the pressing block (16) and coaxial with the pressing block (16) is arranged inside the pressing block (16), the core pipe (19) is a pipe body with an elliptic section and a long axis direction consistent with the long axis direction of the horizontal section of the pressing block (16), a plurality of vertical partition plates (20) are arranged in a space between the core pipe (19) and the pressing block (16) at intervals, the space between the pressing block (16) and the core pipe (19) is divided into a plurality of mutually independent cavities by the partition plates (20), and the cavities located at the front end and the rear end of the horizontal section of the pressing block (16) are respectively through air holes in the front side and rear side peripheral walls of the core pipe (19) and the central wall of the central axis With core pipe (19) intercommunication, the top surface center of pressing block (16) is connected with and upwards wears connecting rod (17) of dress in connecting pipe (13), and connecting rod (17) upper end is connected with limiting plate (21) that are located the control section of thick bamboo (5) of connecting pipe (13) top, and both ends are provided with fin (22) respectively about limiting plate (21), fin (22) stretch into spout (6) in, with spout (6) sliding contact, are provided with regulation post (23) above limiting plate (21), and regulation post (23) are screwed into in control section of thick bamboo (5) through the external screw thread, and the lower extreme of regulation post (23) pushes up on limiting plate (21) upper surface, and connecting rod (17) periphery cover between pressing block (16) and drive block (9) is equipped with and is connected at go-between (18) of pressing block (16) top surface, and the inner ring diameter of go-between ring (18) is greater than the external diameter of connecting rod (17), The diameter of the outer ring is larger than or equal to the length of a long shaft of a horizontal section of the pressing block (16), a second annular groove (24) is formed in the upper surface of the connecting ring (18), the driving block (9) is pressed against the top of the pressing block (16) through the connecting ring (18) to form a slope shape, the top of the pressing block (16) is matched with the slope shape of the lower surface of the driving block (9), when the top of the pressing block (16) is pressed against by the driving block (9) to form a slope shape, the slope shape is matched with the slope shape of the lower surface of the driving block (9), the second annular groove (24) and the first annular groove (12) form a limiting groove in a vertical opposite mode, and a plurality of balls (25) are arranged in the limiting groove at intervals.

2. A cardiovascular puncture clamp according to claim 1, characterized in that the connection tube (13) is provided with a compression spring (26) around the periphery thereof between the lower surface of the position-limiting plate (21) and the top surface of the housing (2).

3. A cardiovascular puncture clamp according to claim 1, characterized in that the front and rear side plates of the housing (2) are transparent plates.

4. The cardiovascular puncture clamp according to claim 1, wherein the height of the adjusting column (23) is the same as the height of the control cylinder (5), and the adjusting column (23) is provided with a triangular adjusting hole (27) which penetrates through the front end and the rear end of the upper part of the adjusting column (23).

5. The cardiovascular puncture clamp according to claim 1, wherein the pressing block (16) is a hollow elastic elliptic cylinder made of rubber or silica gel, the core tube (19) is a tube body made of rubber or silica gel, and the partition plate (20) is a rectangular plate body made of rubber or silica gel.

6. The cardiovascular puncture clamp according to claim 1, wherein the width of the strap (1) is equal to the width of the housing (2), the strap (1) comprises a left strap and a right strap, both the left strap and the right strap are inelastic straps, the upper ends of the left strap and the right strap are respectively connected with the lower ends of the left outer side and the right outer side of the housing, and the lower ends of the left strap and the right strap are detachably connected to form a ring.

7. The cardiovascular puncture clamp according to claim 6, wherein the right side surface of the left strap body, the left side surface of the right strap body and the inner top surface of the arc-shaped groove (7) are all provided with an anti-slip layer (28) made of silica gel.

8. A cardiovascular puncture clamp according to claim 1, characterized in that the connecting tube (13) is 4, 6 or 8 prism.

9. The cardiovascular puncture clamp according to claim 1, wherein the horizontal cross section of the pressing block (16) has a major axis length of 2-3cm and a minor axis length of 1.5-2 cm.

10. A cardiovascular puncture clamp according to claim 1, wherein the carrier plate (8) is a horizontally disposed rectangular plate, and the peripheral wall of the carrier plate (8) is connected to the inner peripheral wall of the housing (2).