Vein puncture auxiliary tool

Abstract

The invention discloses a vein puncture auxiliary tool, and relates to the technical field of medical treatment. In order to solve the problems of poor puncture effect and insufficient puncture accuracy caused by difficulty in keeping a relatively static state in the prior art, the invention designs an auxiliary tool for vein puncture, which is structurally characterized by comprising a wrist lifter, a support, a wrist support, a wrist support, a wrist support, a fixing device and a fixing device, the wrist support is connected with the inner wall of the support and ascends and descends along the support. The vein puncture outfit is vertically arranged on one side of the wrist lifting device, and the bottom of the vein puncture outfit is connected with the support; the wrist support is lifted, so that the skin of a patient is attached to the top of the venipuncture outfit, the venipuncture outfit opens the skin of the position needing to be punctured, and fixed-point puncture at a specific angle is achieved in an auxiliary mode. The wrist support is matched with the support to enable the arm to keep stable, the relative position of the vein puncture outfit and the position, needing puncture, of the arm keeps stable, and it is guaranteed that the accurate puncture effect can be achieved even when the ambulance runs.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and in particular to a venous blood vessel puncture auxiliary tool. Background Art

[0002] Venipuncture is a method of aseptic operation, in which a venipuncture needle is inserted into a superficial vein for intravenous infusion or blood testing in clinical practice to achieve the purpose of treating the disease. In fact, venipuncture is divided into superficial vein puncture and deep vein puncture. Superficial vein puncture is more commonly used in clinical practice, and deep vein puncture is often used for emergency and first aid patients. Venipuncture is mainly suitable for patients who need long-term infusion but whose peripheral veins are difficult to puncture due to hardening or collapse, as well as emergency treatment of patients who need total parenteral nutrition, critically ill patients, and patients with difficulty in blood collection. Central venous pressure can also be measured.

[0003] Venipuncture requires positioning first to determine the needle insertion position. The patient's hand cannot move during needle insertion, otherwise the needle insertion may fail. In addition, local compression is required to make the blood vessels bulge during hand vein puncture, and hand compression often requires manual operation by medical staff, and the blood collection efficiency needs to be improved. In view of this, the present invention provides a venous blood vessel puncture device that can automatically and locally compress the arm blood vessels, and can limit the arm position to improve the success rate of needle insertion.

[0004] The patent with publication number CN112155695B discloses a venous puncture auxiliary tool, including a shock-absorbing telescopic base, one side of the shock-absorbing telescopic base is detachably connected to a seat structure, the upper end of the shock-absorbing telescopic base is provided with an arm placement fixing structure, and the upper side of one end of the arm placement fixing structure is provided with a chin dragging and dropping structure; the shock-absorbing telescopic base includes a telescopic rod structure and a base distributed up and down, the telescopic rod structure and the base are connected to each other with a second shock-absorbing structure, and the outer side of the second shock-absorbing structure is provided with three or more first shock-absorbing structures uniformly distributed at equal angles with the second shock-absorbing structure as the center, the arm of the patient who needs intravenous injection is fixed and placed by the arm placement fixing structure, and the chin of the medical staff is supported and fixed by the chin dragging and dropping structure, so that the medical staff and the patient can remain relatively stable and still, thereby realizing rapid auxiliary intravenous injection of the patient.

[0005] The size of the invention is too large, and the main improvement direction is to maintain a relatively stable body position before puncturing. The main improvement direction of the present invention is to assist in local compression and assist in fixed-point puncture. Summary of the invention

[0006] In view of the above problems, the technical ideas adopted by the present invention to solve the technical problems are as follows: Place the patient's arm in a wrist rest to stabilize the patient's limbs; adjust the height of the wrist rest and the position of the venous puncture device so that the patient's skin at the required puncture site fits the venous puncture device; tighten the hemostatic band to compress the blood vessel, and the venous puncture device stretches the patient's skin at the required puncture site and assists the puncture needle to achieve fixed-point puncture at a specific angle.

[0007] The specific plan is as follows: A venous puncture auxiliary tool comprises: a wrist lifter having a bracket and a wrist rest, on which a patient's wrist is placed, the wrist rest being connected to the inner wall of the bracket and being raised and lowered along the bracket; a venous puncture device being vertically arranged on one side of the wrist lifter and having its bottom connected to the bracket; wherein the wrist rest is raised and lowered to make the patient's skin fit against the top of the venous puncture device, and the venous puncture device stretches the skin at the desired puncture site and assists in achieving fixed-point puncture at a specific angle.

[0008] In order to realize the above scheme, further, the intravenous puncture device includes: a support rod, vertically arranged on one side of the wrist lifter; a skin-stretching structure, arranged at the top edge of the support rod; an auxiliary puncture structure, arranged in the middle of the top of the support rod, and having the function of adjusting the angle; wherein, the wrist support provides an upward force to make the patient's skin fit the skin-stretching structure, the support rod provides a stable force, and the skin-stretching structure provides an inclined force to form a horizontal moving force, thereby stretching the skin at the desired puncture site; the puncture needle punctures through the auxiliary puncture structure to achieve fixed-point puncture at a specific angle.

[0009] A preferred solution is that the skin-stretching structure includes: at least two groups of inclined rods, whose tops are respectively hinged to the supporting rods; a plurality of elastic members, respectively arranged at the bottoms of the inclined rods; and a plurality of rigid members, respectively arranged between the elastic members; wherein the elastic members and the rigid members form a ring, the inclined rods provide an inclined force, the ring is subjected to a force moving in the horizontal direction, the rigid members move circumferentially, the elastic members are deformed, the ring expands, and the skin at the desired puncture site is stretched.

[0010] Optionally, a gasket is connected to the side of the rigid member close to the skin for fitting with the skin.

[0011] Another preferred embodiment is that the auxiliary puncture structure includes: a first transmission component, which is arranged inside the support rod; a fixed rod, the top of which is connected to the first transmission component; an auxiliary puncture tube, the outer wall of which is connected to the bottom of the fixed rod; wherein the first transmission component drives the auxiliary puncture tube to move through the fixed rod, so that the auxiliary puncture tube can adjust the puncture angle.

[0012] Optionally, the angle between the fixing rod and the auxiliary puncture tube is 80°-100°.

[0013] Preferably, the bottom of the support rod is connected to the bracket via a sliding fixing structure, and the sliding fixing structure includes: a slider, which slides along the bottom of the bracket and is connected to the bottom of the support rod; a telescopic assembly, which is arranged at one end of the slider; and a second transmission assembly, which is arranged at the end of the slider away from the telescopic assembly; wherein the support rod is adjusted in position through the slider, the second transmission assembly drives the slider to move, and the slider causes the telescopic assembly to deform.

[0014] Specifically, a hemostatic band is movably connected to the wrist rest.

[0015] Furthermore, a sleeve arm is connected between the hemostatic band and the support rod, and is used to drive the hemostatic band to move when the position of the support rod is adjusted.

[0016] By adopting the above technical solution, the present invention has the following technical effects: A venous puncture auxiliary tool comprises: a wrist lifter having a bracket and a wrist rest, wherein the patient's wrist is placed on the wrist rest, the wrist rest is connected to the inner wall of the bracket and is raised and lowered along the bracket; a venous puncture device is vertically arranged on one side of the wrist lifter, and the bottom is connected to the bracket; wherein the lifting wrist rest makes the patient's skin fit against the top of the venous puncture device, the venous puncture device stretches the skin at the desired puncture site, and assists in achieving fixed-point puncture at a specific angle.

[0017] During intravenous infusion or blood test, place the patient's arm on the wrist rest to keep the arm stable; adjust the height of the wrist rest and the position of the venous puncture device so that the skin at the patient's desired puncture site fits the venous puncture device; the side of the bracket that fits the skin can be adjusted and tied tightly according to the thickness of the patient's arm; in this way, the wrist rest and the bracket cooperate with each other to keep the arm completely stable, and the relative position of the venous puncture device and the desired puncture site on the arm remains completely stable, ensuring that accurate puncture can be achieved even when the ambulance is driving. The hemostatic band tightens and compresses the blood vessels, and the venous puncture device can gradually stretch the skin at the patient's desired puncture site to avoid the phenomenon of point deviation during the puncture process caused by loose skin, saving medical staff the manual compression operation; the venous puncture device has a puncture channel, which can assist the puncture needle to achieve fixed-point puncture at a specific angle to ensure the accuracy of the puncture. Since the puncture site and the tourniquet setting site are usually close, the venous puncture device and the hemostatic band can be moved synchronously, which is efficient and convenient, and improves practicality. The venous puncture auxiliary tool of the present invention improves the integration of the device during the venous puncture process, improves the medical quality, and also protects the rights and interests and life safety of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the embodiments are briefly introduced below.

[0019] Figure 1 It is a structural schematic diagram of a venous puncture auxiliary tool provided in an embodiment of the present application; Figure 2 is a schematic structural diagram of a wrist lifter provided in an embodiment of the present application; Figure 3 is a schematic diagram of the structure of the wrist rest provided in an embodiment of the present application; Figure 4 is a schematic diagram of the position of the venous puncture device provided in an embodiment of the present application; Figure 5 is a schematic diagram of the structure of the venous puncture device provided in an embodiment of the present application; Figure 6 is an enlarged schematic diagram of point A provided in an embodiment of the present application; Figure 7 The embodiment of this application provides Figure 6 perspective drawing; Figure 8 It is a schematic diagram of the structure of the skin-opening structure and the auxiliary puncture structure provided in the embodiment of the present application; Fig. 9 The embodiment of this application provides Figure 8 perspective drawing; Fig.10 is an enlarged schematic diagram of point B provided in the embodiment of the present application; Fig.11 It is a schematic diagram of the structure of the hemostatic band provided in an embodiment of the present application; Fig.12 It is a schematic diagram of the structure of the sleeve arm provided in an embodiment of the present application.

[0020] Icon: wrist lift 100; Base 101; sliding groove 101A; fixed support rod 102; sliding groove 102A; restraint belt 103; wrist support 104; semicircular groove 104A; pulley 105; telescopic rod 106; Venipuncture set 200; Support rod 201; inclined rod 202; hinge 203; rubber tube section 204; metal tube section 205; gasket 206; fixing rod 207; auxiliary puncture tube 208; gear 209; slider 210; spring 211; pulley 212; Hemostatic band 300 ; ball 301 ; sleeve arm 302 . DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the appended examples of the embodiments of the present application. Figure 1-12, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present application, it should be noted that the terms "center", "up", "down", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connected" should be understood in a broad sense. Embodiment 1

[0025] The inventor has found that venous puncture requires positioning first to determine the needle insertion position. The patient's hand cannot move during needle insertion, otherwise the needle insertion is likely to fail. In addition, local compression is required to make the blood vessels bulge during hand venous puncture, and hand compression often requires manual operation by medical staff, and the blood collection efficiency needs to be improved. Therefore, the present application provides a venous puncture auxiliary tool that can limit the position of the arm and automatically locally compress the blood vessels at the puncture site.

[0026] In the examples of this application, please refer to Figure 1 , Figure 1 It is a structural schematic diagram of a venous puncture auxiliary tool provided in an embodiment of the present application. A venous puncture auxiliary tool includes: a wrist lifter 100, which has a bracket and a wrist support 104, and the patient's wrist is placed on the wrist support 104, and the wrist support 104 is connected to the inner wall of the bracket and is lifted and lowered along the bracket; a venous puncture device 200 is vertically arranged on one side of the wrist lifter 100, and the bottom is connected to the bracket; wherein, the lifting wrist support 104 makes the patient's skin fit with the top of the venous puncture device 200, and the venous puncture device 200 stretches the skin at the desired puncture site and assists in achieving fixed-point puncture at a specific angle.

[0027] During intravenous infusion or blood test, place the patient's arm on the wrist support 104 to keep the arm stable; adjust the height of the wrist support 104 and the position of the venous puncture device 200 so that the skin of the patient's desired puncture site fits with the venous puncture device 200; the side of the support that fits the skin can be adjusted and tied tightly according to the thickness of the patient's arm; in this way, the wrist support 104 and the support cooperate with each other to keep the arm completely stable, and the relative position of the venous puncture device 200 and the desired puncture site on the arm remains completely stable, ensuring that accurate puncture can be achieved even when the ambulance is driving. The hemostatic band 300 tightens and compresses the blood vessels, and the venous puncture device 200 can gradually stretch the skin of the patient's desired puncture site to avoid the phenomenon of point deviation during the puncture process caused by loose skin, saving the medical staff the manual compression operation; the venous puncture device 200 has a puncture channel, which can assist the puncture needle to achieve fixed-point puncture at a specific angle to ensure the accuracy of the puncture. Since the puncture site and the tourniquet setting site are usually close, the venous puncture device 200 and the hemostatic band 300 can be moved synchronously, which is efficient and convenient, and improves practicality. The present invention improves the integration of the device during the venous puncture process, improves the medical quality, and is also a guarantee for the rights and interests of patients and life safety.

[0028] In the examples of this application, please refer to Figure 2 and Figure 3 , Figure 2 is a schematic structural diagram of a wrist lifter provided in an embodiment of the present application; Figure 3 It is a schematic diagram of the structure of the wrist support provided in an embodiment of the present application. The wrist lifter 100 includes a bracket and a wrist support 104; the bracket includes a base 101, two sets of fixed support rods 102 and a restraint belt 103. The base 101 is in the shape of a rectangular plate and is placed horizontally to provide stable support for being placed on a desktop or used in an ambulance. The four corners of the base 101 are rounded to avoid scratching the patient's skin. The four corners of the upper part of the base 101 are respectively welded or clamped with vertically arranged strip-shaped fixed support rods 102. A restraint belt 103 is bonded between the tops of the two fixed support rods 102 close to the short side of the base 101. The restraint belt 103 is highly elastic and can be adjusted and tied tightly according to the thickness of the patient's arm.

[0029] The wrist rest 104 is in the shape of a semicircular arc, and its length and width match the distance between the fixed support rods 102, and the curvature is based on the ergonomic standard; the wrist rest 104 is hinged with pulleys 105 at the joints with the four fixed support rods 102, and the pulleys 105 and the installation method thereof are common existing technologies, which can be implemented by those skilled in the art and will not be elaborated here.

[0030] It should be noted that a slide groove 102A is provided on one side of the fixed support rod 102 close to the wrist support 104 along the length direction of the fixed support rod 102 . The pulley 105 cooperates with the slide groove 102A, slides in the slide groove 102A, and drives the wrist support 104 to move.

[0031] A telescopic rod 106 is welded or clamped between the middle of one side of the wrist rest 104 close to the base 101 and the upper part of the base 101. The telescopic rod 106 is a common prior art and can be implemented by those skilled in the art, so it will not be described in detail here.

[0032] During intravenous infusion or blood test, the patient places his arm in the wrist support 104, controls the telescopic rod 106 to rise, and drives the wrist support 104 to move along the length direction of the fixed support rod 102. When the patient's skin is in contact with the intravenous puncture device 200, the restraint belt 103 binds and fixes the patient's arm.

[0033] It should be noted that a sliding groove 101A is provided on one side of the base 101 close to the venous puncture device 200 along the length direction of the base 101 , and the slider 210 cooperates with the sliding groove 101A and slides in the sliding groove 101A.

[0034] It should be noted that a semicircular groove 104A is provided in the middle of one side of the wrist support 104 away from the telescopic rod 106 along the length direction thereof for cooperating with the hemostatic band 300 .

[0035] In the examples of this application, please refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 , Figure 4 is a schematic diagram of the position of the venous puncture device provided in an embodiment of the present application; Figure 5 is a schematic diagram of the structure of the venous puncture device provided in an embodiment of the present application; Figure 6 is an enlarged schematic diagram of point A provided in an embodiment of the present application; Figure 7 The embodiment of this application provides Figure 6 perspective drawing; Figure 8 It is a schematic diagram of the structure of the skin-opening structure and the auxiliary puncture structure provided in the embodiment of the present application; Fig. 9 The embodiment of this application provides Figure 8 perspective drawing; Fig.10It is an enlarged schematic diagram of point B provided in the embodiment of the present application. The intravenous puncture device 200 includes: a support rod 201, which is vertically arranged on one side of the wrist lifter 100, whose height matches that of the bracket, and whose top end is arranged above the wrist support 104, and whose bottom end is connected to the base 101; a skin-opening structure, which is arranged at the top edge of the support rod 201; an auxiliary puncture structure, which is arranged in the middle of the top of the support rod 201 and has the function of adjusting the angle; wherein, the wrist support 104 provides an upward force to make the patient's skin fit with the skin-opening structure, the support rod 201 provides a stable force, and the skin-opening structure provides an inclined force to form a horizontal moving force, thereby opening the skin at the desired puncture site; the puncture needle punctures through the auxiliary puncture structure to achieve a fixed-point puncture at a specific angle.

[0036] The preferred solution is that the skin-stretching structure includes: at least two groups of inclined rods 202, whose tops are respectively hinged to the support rods 201; a number of elastic parts, which are respectively arranged at the bottom of the inclined rods 202; and a number of rigid parts, which are respectively arranged between the elastic parts; wherein the elastic parts and the rigid parts form a ring, the inclined rods 202 provide an inclined force, the ring is subjected to a horizontal moving force, the rigid parts move circumferentially, the elastic parts are deformed, and the ring expands to stretch the skin at the desired puncture site.

[0037] The diagonal rods 202 are all inclined outward, and their top ends are connected to the top ends of the support rods 201 through hinges 203. The hinges 203 are composed of a group of fixing plates and an axis. A group of fixing plates are placed on both sides of the diagonal rods 202 and are welded or clamped to the top ends of the support rods 201. The axis passes through the diagonal rods 202 and the fixing plates on both sides thereof. The hinges 203 are common prior art and can be implemented by those skilled in the art, so they will not be elaborated here.

[0038] The elastic member can be a hollow arc-shaped rubber tube section 204, the upper middle part of the rubber tube section 204 is bonded to the bottom end of the inclined rod 202, and the rubber tube sections 204 corresponding to the inclined rod 202 are assembled into a circular ring with a gap.

[0039] The rigid member can be a solid arc-shaped metal tube section 205, which is arranged between adjacent rubber tube sections 204, with both ends of the metal tube section 205 respectively inserted into the rubber tube section 204 and the middle part exposed. The metal tube section 205 and the rubber tube section 204 together form a complete annular shape.

[0040] The present application does not limit the specific number of the inclined rods 202 , and those skilled in the art should make adjustments according to actual needs. The number of elastic members corresponds to the number of the inclined rods 202 , and the number of rigid members corresponds to the number of elastic members.

[0041] It should be noted that the side of the rigid part close to the skin is connected with a gasket 206 for fitting with the skin. Since the diameter of the metal tube section 205 is smaller than that of the rubber tube section 204, in order to ensure the fit between the metal tube section 205 and the skin, the side of the exposed part of the metal tube section 205 away from the inclined rod 202 is connected with a gasket 206. The present application does not limit the shape of the gasket 206. The gasket 206 and the metal tube section 205 can be fixedly connected by screws or articulated by ball joints. This is a common connection method that can be realized by those skilled in the art and will not be described in detail here.

[0042] The wrist support 104 is raised so that the patient's skin at the location where puncture is required is closely attached to the gasket 206 and the elastic tube segment. The telescopic rod 106 provides an upward force, and the inclined rod 202 provides an inclined force with the support rod 201 as a base point, so that the ring formed by the elastic tube segment and the metal tube segment 205 expands outward, and the metal tube segment 205 causes the rubber tube segment 204 to deform, and the rubber tube segment 204 and the gasket 206 then stretch the skin at the location where puncture is required, thereby avoiding the phenomenon of point deviation caused by skin relaxation during the puncture process, and saving the medical staff the operation of manual compression.

[0043] Another preferred embodiment is that the auxiliary puncture structure includes: a first transmission component, which is arranged inside the support rod 201; a fixed rod 207, the top of which is connected to the first transmission component; an auxiliary puncture tube 208, the outer wall of which is connected to the bottom of the fixed rod 207; wherein the first transmission component drives the auxiliary puncture tube 208 to move through the fixed rod 207, so that the auxiliary puncture tube 208 can adjust the puncture angle.

[0044] A square groove is provided at the top of the support rod 201 in the vertical direction, and a first transmission assembly is arranged in the groove. The first transmission assembly includes a motor and a gear 209; a motor is embedded in one side wall of the square groove, and the output end of the motor is connected to the gear 209, and the gear 209 is in the square groove; the end of the fixed rod 207 close to the gear 209 is in the shape of a half gear 209, so that it meshes with the gear 209, and the two sides of the half gear 209 end are connected to the top of the support rod 201 through the hinge 203 mentioned above. The auxiliary puncture tube 208 is made of hard material and is in the shape of a hollow cylinder, and its outer surface is welded or clamped to the end of the fixed rod 207 away from the gear 209. The motor is a common prior art, and a person skilled in the art can implement it, so it will not be described here.

[0045] Optionally, the angle between the fixing rod 207 and the auxiliary puncture tube 208 is 80°-100°.

[0046] Start the motor to drive the gear 209 to rotate, and the gear 209 drives the fixed rod 207 and the auxiliary puncture tube 208 to rotate. After the auxiliary puncture tube 208 is adjusted to a required angle, stop the motor, and the puncture needle passes through the auxiliary puncture tube 208 and then pierces the skin, thereby achieving precise puncture.

[0047] Preferably, the bottom of the support rod 201 is connected to the base 101 of the bracket by a sliding fixing structure, and the sliding fixing structure includes: a slider 210, which slides along the bottom of the bracket and is connected to the bottom of the support rod 201; a telescopic assembly, which is arranged at one end of the slider 210; a second transmission assembly, which is arranged at the end of the slider 210 away from the telescopic assembly; wherein the support rod 201 is adjusted in position through the slider 210, the second transmission assembly drives the slider 210 to move, and the slider 210 causes the telescopic assembly to deform.

[0048] The shape of the slider 210 matches the sliding groove 101A, and it will not fall when stuck in the sliding groove 101A and can slide; the bottom end of the support rod 201 is welded or clamped to the side of the slider 210 close to the support rod 201; the telescopic component can be a spring 211, which is arranged along the length direction of the sliding groove 101A, one end of which is fixedly connected to the inner wall of the sliding groove 101A, and the other end is fixedly connected to the side of the slider 210 close to the spring 211; the second transmission component includes a motor and a pulley 212, the motor is embedded in the side wall of the sliding groove 101A, the output end of the motor is connected to the pulley 212, and the end of the belt is fixedly connected to the side of the slider 210 away from the spring 211. The pulley 212 is a common prior art, which can be implemented by those skilled in the art and will not be described in detail here.

[0049] The motor is started to drive the pulley 212 to rotate, the belt is wound to drive the slider 210 to move, the slider 210 stretches the spring 211 to deform it, and the motor is stopped after reaching a suitable position. The slider 210 drives the support rod 201 to move, so as to adjust the position of the skin structure and the auxiliary puncture structure.

[0050] In the examples of this application, please refer to Fig.11 , Fig.11 : is a schematic diagram of the structure of the hemostatic band provided in an embodiment of the present application. A hemostatic band 300 is movably connected to the wrist rest 104. The hemostatic band 300 is a common prior art, and can be implemented by a person skilled in the art, and will not be described in detail here. A ball 301 is bonded to the middle part of the hemostatic band 300 close to the side of the wrist rest 104, and the ball 301 cooperates with the semicircular groove 104A on the wrist rest 104. The ball 301 limits the hemostatic band 300 so that the hemostatic band 300 can only move along the length direction of the wrist rest 104. Embodiment 2

[0051] In the examples of this application, please refer to Fig.12 , Fig.12: is a schematic diagram of the structure of the sleeve arm provided in the embodiment of the present application. Different from the first embodiment, since the position of the hemostatic band 300 is relatively close to the puncture position, in order to facilitate integrated use, a sleeve arm 302 is connected between the hemostatic band 300 and the support rod 201, which is used to drive the hemostatic band 300 to move when the position of the support rod 201 is adjusted. One end of the sleeve arm 302 passes through the thread through the support rod 201, and the other end is annular and is sleeved on the outside of the hemostatic band 300. The middle part of the sleeve arm 302 can be a telescopic rod. In this way, adjusting the position of the support rod 201 can drive the hemostatic band 300 to move together, avoiding the medical staff from adjusting their positions separately, which is convenient and efficient.

[0052] Application Process During intravenous infusion or blood test, the patient places his arm in the wrist support 104, adjusts the position of the support rod 201 by the sliding fixing structure, controls the telescopic rod 106 to rise, and the restraint belt 103 binds and fixes the patient's arm. The medical staff tightens the hemostatic band 300, and the patient's skin at the puncture site is tightly attached to the gasket 206 and the elastic tube segment. The telescopic rod 106 provides an upward force, and the inclined rod 202 provides an inclined force with the support rod 201 as the base point, so that the ring formed by the elastic tube segment and the metal tube segment 205 expands outward, and the metal tube segment 205 causes the rubber tube segment 204 to deform, and the rubber tube segment 204 and the gasket 206 then stretch the skin at the puncture site. After adjusting the auxiliary puncture tube 208 to the required angle, the medical staff uses the puncture needle to pass through the auxiliary puncture tube 208 and then pierce the skin.

[0053] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A venous puncture auxiliary tool, characterized in that: include: A wrist lifter (100) comprises a support and a wrist support (104), wherein the patient's wrist is placed on the wrist support (104), and the wrist support (104) is connected to the inner wall of the support and is lifted and lowered along the support; A venous puncture device (200) is vertically arranged on one side of the wrist lifter (100), and the bottom is connected to the bracket; The wrist support (104) is raised or lowered to allow the patient's skin to fit the top of the venous puncture device (200), and the venous puncture device (200) stretches the skin at the desired puncture site and assists in achieving fixed-point puncture at a specific angle.

2. A venous puncture auxiliary tool according to claim 1, characterized in that: The venous puncture device (200) comprises: A support rod (201) vertically arranged on one side of the wrist lifter (100); A skin structure is stretched out and arranged at the top edge of the support rod (201); An auxiliary puncture structure, arranged in the middle of the top of the support rod (201), having the function of adjusting the angle; The wrist support (104) provides an upward force to make the patient's skin fit against the skin-stretching structure, the support rod (201) provides a stable force, and the skin-stretching structure provides an inclined force to form a horizontal moving force, thereby stretching the skin at the desired puncture site; the puncture needle punctures through the auxiliary puncture structure to achieve fixed-point puncture at a specific angle.

3. A venous puncture auxiliary tool according to claim 2, characterized in that: The stretched skin structure comprises: At least two groups of inclined rods (202), the tops of which are respectively hinged to the support rods (201); A plurality of elastic members, respectively arranged at the bottom of the inclined rod (202); A plurality of rigid parts, respectively arranged between the elastic parts; The elastic member and the rigid member form a ring, the inclined rod (202) provides an inclined force, the ring is subjected to a horizontal moving force, the rigid member moves circumferentially, the elastic member deforms, the ring expands, and the skin at the desired puncture site is stretched.

4. A venous puncture auxiliary tool according to claim 3, characterized in that: A gasket (206) is connected to the side of the rigid part close to the skin, and is used to fit the skin.

5. A venous puncture auxiliary tool according to claim 2, characterized in that: The auxiliary puncture structure comprises: A first transmission assembly, arranged inside the support rod (201); A fixed rod (207), the top of which is connected to the first transmission assembly; An auxiliary puncture tube (208), the outer wall of which is connected to the bottom of the fixing rod (207); Wherein, the first transmission assembly drives the auxiliary puncture tube (208) to move via the fixed rod (207), thereby enabling the auxiliary puncture tube (208) to adjust the puncture angle.

6. A venous puncture auxiliary tool according to claim 5, characterized in that: The angle between the fixing rod (207) and the auxiliary puncture tube (208) is 80°-100°.

7. A venous puncture auxiliary tool according to claim 3, characterized in that: The bottom of the support rod (201) is connected to the bracket via a sliding fixing structure, and the sliding fixing structure comprises: A sliding block (210) slides along the bottom of the bracket and is connected to the bottom of the support rod (201); A telescopic component, arranged at one end of the slider (210); A second transmission assembly, arranged at an end of the slider (210) away from the telescopic assembly; The support rod (201) is adjusted in position via the slider (210), the second transmission assembly drives the slider (210) to move, and the slider (210) causes the telescopic assembly to deform.

8. A venous puncture auxiliary tool according to claim 2, characterized in that: A hemostatic band (300) is movably connected to the wrist support (104).

9. A venous puncture auxiliary tool according to claim 8, characterized in that: A sleeve arm (302) is connected between the hemostatic band (300) and the support rod (201) and is used to drive the hemostatic band (300) to move when the position of the support rod (201) is adjusted.

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