A vascular puncture locator

Abstract

The present invention discloses a vascular puncture locator, which belongs to the technical field of wearable puncture positioning equipment. The locator comprises an external arm ring, an internal arm ring, and a puncture needle fixing plate. The internal arm ring is installed on the arm, the external arm ring is fixedly connected to the internal arm ring, the puncture needle fixing plate engages and rotates on the external arm ring, the external arm ring comprises an outer limiting ring, an inner positioning ring and a rotation angle limiter, and the internal arm ring is provided with an arm tightening structure and a one-way limiting device. In order to solve the problem that the puncture device affects the patient's physiological activities, the present invention provides a vascular puncture locator with a simple structure, easy to carry, capable of ensuring the stability of the connection between the puncture device and the human body, and capable of performing multi-angle rotation according to the puncture needs, thereby improving the convenience of the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of blood vessel puncture positioning equipment, and specifically refers to a blood vessel puncture locator. Background Art

[0002] Vascular puncture is one of the most widely used basic procedures in clinical medicine, involving a variety of scenarios such as venous blood sampling, infusion, and catheterization for interventional treatment. Traditional vascular puncture relies on the medical staff's experience and palpation to determine the location and direction of the blood vessel through visual inspection and finger touch. Existing puncture equipment is too large and requires the patient to maintain a fixed posture during puncture, unable to leave the puncture seat, which causes physical inconvenience to the patient. Summary of the Invention

[0003] In view of the above situation, in order to solve the problem that the puncture device affects the patient's physiological activities, the present invention provides a blood vessel puncture locator with a simple structure, easy to carry, able to ensure the stability of the connection between the puncture device and the human body, and can also be rotated at multiple angles according to puncture needs, thereby improving the convenience of the device.

[0004] The technical solution adopted by the present invention is as follows: The present invention provides a vascular puncture locator, including an external arm ring, an internal arm ring, and a puncture needle fixing plate. The internal arm ring is installed on the arm, the external arm ring is fixedly connected to the internal arm ring, and the puncture needle fixing plate is engaged and rotated on the external arm ring; the external arm ring includes an outer limiting ring, an inner positioning ring and a rotation angle limiter, the inner positioning ring is fixedly connected to the internal arm ring, the outer limiting ring is engaged and rotated with the inner positioning ring, the rotation angle limiter is engaged and slides on the outer limiting ring, and the rotation angle limiter is in contact with the inner positioning ring.

[0005] Furthermore, a ratchet ring is provided on the inner positioning ring, a slot is provided on the outer wall of the inner positioning ring, and a blocking block is provided on the outer limit ring, which engages and slides in the slot, and a pin slot is provided on the side wall of the inner positioning ring, and a pin block is provided in the pin slot for engaging and sliding, and a spring is used to connect the pin block and the pin slot, and the pin block is fixedly connected by a bracket, and the bracket is engaged with the finger pressure plate, and the finger pressure plate is provided with a bracket slide groove. When the bracket slides in the pin slot, an angle is formed between the ratchet teeth on the ratchet ring, and an angle is also formed between the two adjacent groups of pin blocks. The bracket slides in the bracket slide groove at the same time, and the pin block is in contact with the ratchet ring.

[0006] Furthermore, the arm built-in ring is provided with an arm tightening structure and a one-way limiting device, the arm tightening structure is engaged and slid in the arm built-in ring, and the one-way limiting device is engaged and installed on the outer wall of the arm built-in ring; the arm tightening structure includes a gear ring, a gear, a rack and an arm splint, the gear ring is engaged and rotatably set in the arm built-in ring, the gear is engaged and rotatably set in the arm built-in ring, the gear ring and the gear are engaged with each other, the rack is engaged with the gear, and the arm splint is fixedly mounted on the rack.

[0007] Furthermore, a hole for placing the arm is provided at the center of the circle of the arm built-in ring, and a slot for facilitating the movement of the rack is provided on the arm built-in ring.

[0008] Furthermore, the one-way limit device includes a trapezoidal limit block, a one-way limit block and a limit block adjustment slot. The trapezoidal limit block is fixedly mounted on the rack, the limit block adjustment slot is arranged on the side wall of the built-in ring of the arm, the one-way limit block engages and slides in the limit block adjustment slot, and the one-way limit block and the limit block adjustment slot are connected by a spring.

[0009] Furthermore, a protrusion is provided on the one-way limit block, and the operator can move the one-way limit block through the protrusion to separate the trapezoidal limit block and the one-way limit block, thereby separating the arm from the arm splint and removing the equipment from the arm.

[0010] Furthermore, the cross-section of the one-way limit block is set to a right triangle. After the trapezoidal limit block moves, the bottom wall of the trapezoidal limit block is pressed by the one-way limit block to ensure that the arm splint is stable when clamping the arm.

[0011] Furthermore, a semicircular limiting wheel is provided on the external arm ring, and an arc-shaped slot for rotating the puncture needle fixing plate is also provided on the external arm ring. A small gear for engaging and rotating is provided on the bottom wall of the puncture needle fixing plate, and the small gear is engaged with the limiting wheel.

[0012] Furthermore, a scale is provided on the puncture needle fixing plate.

[0013] Furthermore, the puncture needle fixing plate is provided with a puncture needle slide, the puncture needle fixing plate is provided with a puncture needle pressing plate, the puncture needle fixing plate is provided with a pressing plate slot, and the puncture needle pressing plate is also provided with a booster plate, the booster plate is engaged and slidably connected with the puncture needle pressing plate, and a spring is provided between the booster plate and the puncture needle pressing plate.

[0014] Furthermore, in order to prevent the puncture needle from sliding beyond the bearing range of the puncture needle fixing plate, the length of the pressing plate slot is smaller than the length of the puncture needle fixing plate.

[0015] Preferably, a laser pen is provided on the puncture needle fixing plate to determine the needle insertion point before puncture.

[0016] Preferably, in order to improve the comfort of the arm when it is laid flat, a slide groove is provided on the outer wall of the external ring of the arm, a card block is provided in the slide groove, a support plate for lifting the external ring of the arm is provided on the card block, a support plate for lifting the arm is provided on the support plate, and an airbag is provided on the support plate. After inflation, the arm is supported to improve the comfort of the arm.

[0017] Furthermore, two ends of the gear are respectively engaged with the gear ring and the rack.

[0018] Furthermore, a pressing plate for easy pressing is provided on the trapezoidal limiting block.

[0019] Furthermore, the external arm ring, the internal arm ring and the puncture needle fixing plate are all made of plastic, making the device light and easy to carry.

[0020] This solution provides a vascular puncture locator, which has the following beneficial effects:

[0021] (1) The rotation angle between the outer limit ring and the inner positioning ring is controlled by the ratchet ring and the bayonet block. The operation is convenient. The rotation adjustment pinion can be used to control the puncture direction and puncture angle of the puncture needle. The meshing connection between the gear ring, gear and rack is used to achieve the effect of clamping the arm with multiple sets of arm splints at the same time. Under the connection relationship between the trapezoidal limit block and the one-way limit block, the arm and the device are relatively fixed.

[0022] (2) A laser pen is installed on the puncture needle fixing plate to obtain the puncture point of the current puncture needle in advance, which is convenient for non-professionals to operate; a support plate is provided on the external ring of the arm to improve the comfort of the arm when it is laid flat, so that the device of this application is easy to carry and can be spread flat on the desktop. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a blood vessel puncture locator provided by the present invention;

[0024] Figure 2 An exploded view of a vascular puncture locator provided by the present invention;

[0025] Figure 3 A front perspective sectional view of a blood vessel puncture locator provided by the present invention;

[0026] Figure 4 A right-side stereoscopic cross-sectional view of a vascular puncture locator provided by the present invention;

[0027] Figure 5A diagram showing a vascular puncture locator provided by the present invention placed on a support plate for use;

[0028] Figure 6 This is a schematic diagram of the structure of the external arm ring;

[0029] Figure 7 A schematic diagram of the connection structure between the arm tightening structure and the one-way limiting device;

[0030] Figure 8 This is a schematic diagram of the structure of the built-in ring in the arm;

[0031] Figure 9 It is a schematic diagram of the connection structure between the bayonet block and the finger pressure plate;

[0032] Figure 10 It is a structural diagram of the puncture needle fixing plate;

[0033] Figure 11 for Figure 6 A partial enlarged view of part A;

[0034] Figure 12 for Figure 8 A partial enlarged view of part B.

[0035] Among them, 1. External arm ring, 2. Internal arm ring, 3. Puncture needle fixing plate, 4. External limiting ring, 5. Internal positioning ring, 6. Rotation angle limiter, 7. Ratchet ring, 8. Pin slot, 9. Pin block, 10. Finger pressure plate, 11. Bracket slide, 12. Arm tightening structure, 13. One-way limiting device, 14. Gear ring, 15. Gear, 16. Rack, 17. Arm splint, 18. Hollow, 19. Trapezoidal limiting block, 20. One-way limiting block, 21. Limit block adjustment slide, 22. Limiting wheel, 23. Arc-shaped slot, 24. Pinion, 25. Puncture needle slide, 26. Puncture needle pressing plate, 27. Pressing plate slot, 28. Booster plate.

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0039] like Figures 1-12 As shown, the present invention provides a vascular puncture locator, which includes an external arm ring 1, an internal arm ring 2, and a puncture needle fixing plate 3. The internal arm ring 2 is installed on the arm, the external arm ring 1 is fixedly connected to the internal arm ring 2, and the puncture needle fixing plate 3 is engaged and rotated on the external arm ring 1.

[0040] The arm built-in ring 2 is provided with an arm tightening structure 12 and a one-way limiting device 13. The arm tightening structure 12 engages and slides in the arm built-in ring 2, and the one-way limiting device 13 engages and is installed on the outer wall of the arm built-in ring 2; the arm tightening structure 12 includes a gear ring 14, a gear 15, a rack 16 and an arm splint 17. The gear ring 14 engages and rotates in the arm built-in ring 2, and the gear 15 engages and rotates in the arm built-in ring 2. The gear ring 14 and the gear 15 are engaged with each other, the rack 16 is engaged with the gear 15, and the arm splint 17 is fixedly installed on the rack 16.

[0041] A hole 18 for placing the arm is provided at the center of the circle of the arm built-in ring 2, and a card slot is provided on the arm built-in ring 2.

[0042] The one-way limit device 13 includes a trapezoidal limit block 19, a one-way limit block 20 and a limit block adjustment slot 21. The trapezoidal limit block 19 is fixedly mounted on the rack 16. The limit block adjustment slot 21 is arranged on the side wall of the arm built-in ring 2. The one-way limit block 20 engages and slides in the limit block adjustment slot 21, and the one-way limit block 20 and the limit block adjustment slot 21 are connected by a spring.

[0043] The one-way limiting block 20 is provided with a protrusion.

[0044] The cross section of the one-way limiting block 20 is set to be a right triangle.

[0045] The external arm ring 1 includes an outer limiting ring 4, an inner positioning ring 5 and a rotation angle limiter 6. The inner positioning ring 5 is fixedly connected to the built-in arm ring 2, the outer limiting ring 4 engages and rotates with the inner positioning ring 5, the rotation angle limiter 6 engages and slides on the outer limiting ring 4, and the rotation angle limiter 6 is in contact with the inner positioning ring 5; a ratchet ring 7 is provided on the inner positioning ring 5, and a slot is provided on the outer wall of the inner positioning ring 5, and a blocking block is provided on the outer limiting ring 4. The blocking block engages and slides in the slot, and the inner positioning ring 5 is provided with a bayonet groove 8. A bayonet block 9 is provided in the bayonet groove 8 for engagement and sliding. A spring is used to connect the bayonet block 9 to the bayonet groove 8, and the bayonet block 9 is fixedly connected through the bracket, and the bracket is engaged with the finger pressure plate 10. The finger pressure plate 10 is provided with a bracket slide groove 11. When the bracket slides in the bayonet groove 8, the bracket slides in the bracket slide groove 11 at the same time, and the bayonet block 9 is in contact with the ratchet ring 7.

[0046] A semicircular limiting wheel 22 is provided on the external arm ring 1, and an arc-shaped slot 23 for the rotation of the puncture needle fixing plate 3 is also provided on the external arm ring 1. A small gear 24 for engagement and rotation is provided on the bottom wall of the puncture needle fixing plate 3, and the small gear 24 is engaged with the limiting wheel 22.

[0047] The puncture needle fixing plate 3 is provided with a scale.

[0048] The puncture needle fixing plate 3 is provided with a puncture needle slide 25, the puncture needle fixing plate 3 is provided with a puncture needle pressing plate 26, the puncture needle fixing plate 3 is provided with a pressing plate slot 27, and the puncture needle pressing plate 26 is also provided with a boosting plate 28. The boosting plate 28 is engaged and slidably connected with the puncture needle pressing plate 26, and a spring is provided between the boosting plate 28 and the puncture needle pressing plate 26.

[0049] The puncture needle fixing plate 3 is provided with a laser pen.

[0050] In order to improve the comfort of the arm when it is lying flat, a slide groove is provided on the outer wall of the arm external ring 1, a card block is provided in the slide groove, a support plate for lifting the arm external ring 1 is provided on the card block, a support plate for lifting the arm is provided on the support plate, and an airbag is provided on the support plate.

[0051] The external arm ring 1, the internal arm ring 2 and the puncture needle fixing plate 3 are all made of plastic.

[0052] When in use, the arm is passed through the hole 18 on the center of the built-in arm ring 2, and a set of trapezoidal limit blocks 19 is selected. The thumb presses the pressure plate structure on the trapezoidal limit block 19, and the rack 16 is pressed and slid by the external force, and the gear 15 rotates. Under the meshing connection relationship, the gear ring 14 rotates at the same time, and the kinetic energy is then transmitted to the remaining sets of gears 15 through the gear ring 14, causing the matching racks 16 to slide, thereby driving the arm splint 17 to clamp the arm from multiple directions;

[0053] When the trapezoidal limit block 19 moves toward the center of the hole 18, the trapezoidal limit block 19 squeezes the one-way limit block 20 and moves it into the limit block adjustment slot 21. The rack 16 is set below the trapezoidal limit block 19. There is a height difference between the rack 16 and the one-way limit block 20, and the two do not contact each other. When the trapezoidal limit block 19 moves, the rack 16 drives the gear 15, and the gear ring 14 drives the remaining racks 16 to slide, and the arm splint 17 moves toward the direction of the arm. After the arm splint 17 clamps the arm, the bottom wall of the trapezoidal limit block 19 contacts the right-angled side of the one-way limit block 20, and the position of the trapezoidal limit block 19 is fixed, and the arm cannot be separated from the arm splint 17.

[0054] Adjust the direction of the puncture needle puncturing the arm, and move the finger pressure plate 10 to move it away from the cavity 18. The bracket where the bayonet block 9 is located slides, separating the bayonet block 9 from the ratchet ring 7. Then, rotate the outer limit ring 4 to offset the puncture needle fixing plate 3 at an appropriate angle. Then, align the puncture needle with the direction of the blood vessel on the arm. Then, release the finger pressure plate 10. The bayonet block 9 is inserted into the gap of the ratchet ring 7 under the action of the spring.

[0055] Place the puncture needle on the puncture needle slide 25 on the puncture needle fixing plate 3, and place the puncture needle pressing plate 26 above the puncture needle. To improve the stability of the puncture needle during movement, press the boosting plate 28 to increase the pressure and limit the puncture needle.

[0056] According to the required puncture angle, the pinion 24 is rotated to make the puncture needle fixing plate 3 slide along the limiting wheel 22. The meshing relationship between the limiting wheel 22 and the pinion 24 enables the puncture needle fixing plate 3 to remain stable at a specific angle;

[0057] Press the puncture needle pressing plate 26 to slide the puncture needle on the puncture needle slide 25, so that the puncture needle is inserted into the body;

[0058] In order to improve the accuracy of puncture, a laser pen is installed on the puncture needle fixing plate 3, and the puncture point after the current puncture needle is punctured is obtained in advance by the laser pen to ensure that the puncture result can meet the expectations;

[0059] Although the existing structure is convenient for the puncture personnel to carry, it is not conducive to the patient spreading his arm flat on the table. Therefore, a sliding support plate structure is provided on the outer wall of the external arm ring 1, and support plates are provided on both sides of the support plate to support the arm. The airbag on the support plate is inflated to adjust the height of the arm on the support plate to ensure the comfort of the arm.

[0060] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0061] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A blood vessel puncture locator, comprising an arm external ring (1), an arm internal ring (2), and a puncture needle fixing plate (3), wherein the arm internal ring (2) is mounted on the arm, the arm external ring (1) is fixedly connected to the arm internal ring (2), and the puncture needle fixing plate (3) is engaged and rotated on the arm external ring (1), characterized in that: The arm external ring (1) comprises an outer limiting ring (4), an inner positioning ring (5) and a rotation angle limiter (6); the inner positioning ring (5) is fixedly connected to the arm internal ring (2); the outer limiting ring (4) and the inner positioning ring (5) are engaged and rotated; the rotation angle limiter (6) is engaged and slid on the outer limiting ring (4), and the rotation angle limiter (6) is in contact with the inner positioning ring (5); a ratchet ring (7) is provided on the inner positioning ring (5); a card slot is provided on the outer wall of the inner positioning ring (5); a card block is provided on the outer limiting ring (4), and the card block is in the card slot. The inner positioning ring (5) is provided with a latch groove (8), and a latch block (9) for latching and sliding is provided in the latch groove (8). A spring is used to connect the latch block (9) and the latch groove (8). The latch block (9) is fixedly connected through a bracket. The bracket is latched and connected with the finger pressure plate (10). The finger pressure plate (10) is provided with a bracket slide groove (11). When the bracket slides in the latch groove (8), the bracket slides in the bracket slide groove (11) at the same time, and the latch block (9) is in contact with the ratchet ring (7); the arm built-in ring (2) is provided with an arm tightening structure (12) and a one-way The arm tightening structure (12) is engaged and slid in the arm built-in ring (2), and the one-way limiting device (13) is engaged and installed on the outer wall of the arm built-in ring (2); the arm tightening structure (12) includes a gear ring (14), a gear (15), a rack (16) and an arm splint (17), the gear ring (14) is engaged and rotatably arranged in the arm built-in ring (2), the gear (15) is engaged and rotatably arranged in the arm built-in ring (2), the gear ring (14) and the gear (15) are engaged with each other, the rack (16) is engaged with the gear (15), and the arm splint (17) is fixedly mounted on the rack (16); the one-way limit device (13) includes a trapezoidal limit block (19), a one-way limit block (20) and a limit block adjusting slot (21), the trapezoidal limit block (19) is fixedly mounted on the rack (16), the limit block adjusting slot (21) is provided on the side wall of the arm built-in ring (2), the one-way limit block (20) is engaged and slid in the limit block adjusting slot (21), and the one-way limit block (20) and the limit block adjusting slot (21) are connected by a spring; the cross section of the one-way limit block (20) is set to a right triangle.

2. A vascular puncture locator according to claim 1, characterized in that: A protrusion is provided on the one-way limit block (20); a hole (18) for placing the arm is provided at the center of the arm built-in ring (2); and a slot is provided on the arm built-in ring (2).

3. A vascular puncture locator according to claim 2, characterized in that: A semicircular limiting wheel (22) is provided on the arm external ring (1), and an arc-shaped slot (23) for the puncture needle fixing plate (3) to rotate is also provided on the arm external ring (1). A small gear (24) for engaging and rotating is provided on the bottom wall of the puncture needle fixing plate (3), and the small gear (24) and the limiting wheel (22) are meshed with each other.

4. A blood vessel puncture locator according to claim 3, characterized in that: The puncture needle fixing plate (3) is provided with a puncture needle slide (25), the puncture needle fixing plate (3) is provided with a puncture needle pressing plate (26), the puncture needle fixing plate (3) is provided with a pressing plate slot (27), and the puncture needle pressing plate (26) is also provided with a boosting plate (28), the boosting plate (28) and the puncture needle pressing plate (26) are engaged and slidably connected, and a spring is provided between the boosting plate (28) and the puncture needle pressing plate (26).

5. The vascular puncture locator according to claim 4, characterized in that: A slide groove is provided on the outer wall of the arm external ring (1), a clamping block is provided in the slide groove, a support plate for lifting the arm external ring (1) is provided on the clamping block, a support plate for lifting the arm is provided on the support plate, and an air bag is provided on the support plate; a laser pen is provided on the puncture needle fixing plate (3); and a scale is provided on the puncture needle fixing plate (3).

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