A syringe assisted push and pull device

Abstract

The utility model relates to the field of medical equipment, and specifically discloses an auxiliary push-pull device for syringe, which comprises a first handle, a second handle, a first spring, a needle cylinder sleeve, a needle cylinder sleeve with a snap spring, a first clamping plate and a first clamping groove arranged at the end of the needle cylinder sleeve, a push rod sleeve, a second clamping plate and a second clamping groove arranged at the end of the needle cylinder sleeve, the first handle and the second handle forming a movable V-shaped structure and being provided with the first spring and a limiting rope, the needle cylinder and the push rod of the syringe being fixed at the movable ends of the first handle and the second handle, the operation of pushing and pressing the syringe being formed by the pinching force of the palm, the syringe being automatically pulled open by the restoring force of the first spring, the efficiency of pulling and pushing the syringe being improved by the fatigue of the palm force compared with the conventional finger force, and the syringe being simple in structure, low in cost, high in portability and suitable for use in clinical practice.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, and specifically relates to a syringe auxiliary push-pull device. Background Technology

[0002] Syringes are a common medical device. When using syringes to prepare medication, it is necessary to repeatedly push and pull the syringe. When pushing the syringe, the index and middle fingers need to be held on the outside of the syringe barrel and blocked by the wing plate, while the thumb presses down on the end cap of the plunger. When pulling the plunger, the hand position needs to be changed so that the thumb and index finger press against the wing plate, and the little finger pulls the end cap of the plunger. For operators with small hands or weak fingers, it is even necessary to use both hands to pull the syringe. The operation is extremely inconvenient, and prolonged operation will cause finger muscle soreness, affecting the operation speed and increasing the error rate.

[0003] Patent document CN2022232443677 discloses a syringe-assisted propulsion device, including a housing, a geared motor, a sliding assembly, a control switch, and a syringe barrel fixing component. The housing supports the geared motor and the sliding assembly. The geared motor has a rotor shaft for connecting to and driving the sliding assembly. The sliding assembly includes a sliding component and a slider. The sliding component is connected to the geared motor, and the slider is slidably connected to the sliding component, enabling it to push the syringe piston to reciprocate within the syringe barrel. The control switch controls the operation and direction of the geared motor. The syringe barrel fixing component is located outside the housing to fix the syringe barrel. The syringe-assisted propulsion device allows control of the reciprocating movement of the syringe piston within the syringe via the control switch. However, the syringe-assisted propulsion device in this prior art is overly complex, costly, and inconvenient to carry. Besides the structure mentioned in this prior art, there is also a pneumatically propelled syringe propulsion device on the market, but it requires an external power supply, occupies too much space, and also suffers from complex structure and high cost, making it unsuitable for general clinical applications.

[0004] The above background information is provided only to assist in understanding the utility model concept and technical solution of this utility model, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary push-pull device for syringes, thereby overcoming the shortcomings of syringes being inconvenient to operate during drug preparation, time-consuming and labor-intensive, and the complex structure and high cost of existing syringe propulsion devices.

[0006] To achieve the above objectives, this utility model provides a syringe auxiliary push-pull device, including a first handle and a second handle. One end of the first handle and one end of the second handle are rotatably connected. A first spring is provided between the first handle and the second handle. A syringe sleeve is provided at the other end of the first handle, and a push rod sleeve is provided at the other end of the second handle. The middle part of the syringe sleeve is rotatably connected to the first handle, and the middle part of the push rod sleeve is rotatably connected to the second handle. A first latch is provided on the side of the syringe sleeve, which secures the two ends of the syringe sleeve. A through-hole is provided, with a retaining spring inside the syringe sleeve, a first retaining plate at the end of the syringe sleeve facing the push rod sleeve, a first retaining groove between the first retaining plate and the end face of the syringe sleeve, and a second retaining slot on the first retaining plate; a second retaining plate at the end of the push rod sleeve facing the syringe sleeve, a second retaining groove between the second retaining plate and the end face of the push rod sleeve, and a third retaining slot on the second retaining plate; a top block that can move toward the second retaining plate is provided inside the push rod sleeve; the second retaining slot and the third retaining slot are aligned with the first retaining slot.

[0007] Preferably, in the above technical solution, a finger sleeve is provided on the side of the first grip away from the second grip.

[0008] Preferably, in the above technical solution, a limiting block protruding outward is provided on the side of the second handle away from the first handle.

[0009] Preferably, in the above technical solution, one end of the limiting rope is fixedly connected to the first handle, and the other end of the limiting rope is fixedly connected to the second handle in an adjustable manner.

[0010] Preferably, in the above technical solution, a threading hole is provided on the side of the second handle facing the first handle, and both ends of the threading hole can pass through from the side of the second handle facing the first handle. The center line of the threading hole is curved. A clamping bolt is provided on the side of the second handle facing away from the first handle. The end of the clamping bolt passes through the middle of the threading hole and tightens the other end of the limiting rope.

[0011] Preferably, in the above technical solution, a fourth notch is provided on one side of the retaining spring, the fourth notch is in the same direction as the first notch, the retaining spring is provided with two or more sets of spring sheets, one end of the spring sheet is fixedly connected to the inner side of the retaining spring, the other end of the spring sheet is close to the center line of the retaining spring, a plurality of spring openings are provided circumferentially on the other end of the spring sheet, and the other end of the spring sheet is rolled inward toward the inner side of the retaining spring.

[0012] Preferably, in the above technical solution, one end of the first clamping plate is fixedly connected to one end of the syringe sleeve, the second clamping opening is opened at the other end of the first clamping plate, and a clamping claw is provided at the other end of the first clamping plate. The number of the clamping claws is two and they are symmetrically arranged on both sides of the second clamping opening. The two sides of the first clamping groove penetrate through both sides of the syringe sleeve.

[0013] Preferably, the above technical solution further includes a safety plate, wherein each end of the safety plate is provided with a locking hole, the locking hole being able to penetrate the top and bottom of the safety plate and match the locking claw.

[0014] Preferably, in the above technical solution, a protruding pinching part is provided on the top of the claw.

[0015] Preferably, in the above technical solution, one end of the second clamping plate is fixedly connected to one end of the push rod sleeve, the third bayonet is opened at the other end of the first clamping plate, and the width of the second slot is greater than the width of the third bayonet; a plug is provided at the other end of the push rod sleeve, a through hole is opened on the plug, and a second spring is provided between the top block and the plug, the second spring being able to push the top block to slide towards the second clamping plate; it also includes a lifting bolt, the threaded end of the lifting bolt passing through the through hole and threadedly connected to the top block, the nut end of the lifting bolt being located outside the push rod sleeve and its diameter being greater than the diameter of the through hole.

[0016] Compared with existing technologies, this utility model has the following beneficial effects:

[0017] 1. The first and second handles of the syringe auxiliary push-pull device of this utility model form a movable V-shaped structure. The syringe barrel and plunger are respectively fixed to the movable ends of the first and second handles. The operation of pushing the syringe can be formed by the squeezing force of the palm. The syringe can be automatically pulled open by the restoring force of the first spring. The palm force improves the efficiency of pushing and pulling the syringe compared with the traditional finger force. Moreover, the structure is simple, the cost is low, and the portability is high, making it suitable for clinical use.

[0018] 2. The first grip of this utility model is provided with a finger sleeve to fix the index, middle, ring and little fingers when gripping. The limiting block on the second grip can restrict the thumb and palm from sliding downward, making the operator's palm more stable during operation. Moreover, compared with the X-shaped structure, when the opening and closing stroke of the moving end is the same, the hand is closer to the moving end, which makes the syringe more stable when drawing medicine and makes it easier to distribute force to the needle tip.

[0019] 3. The first, second, third, and fourth bayonets in this utility model are oriented in the same direction, which facilitates the quick installation of the syringe. The first slot can be locked onto the wing plate of the syringe, and the second slot can be locked onto the plunger cap of the syringe and tightened by the top block. This allows the movable ends of the first and second handles to drive the plunger of the syringe to move in both directions. In addition, the retaining spring can clamp the outside of the syringe barrel, and the multi-plate spring can ensure the clamping strength and the stability of the position after clamping.

[0020] 4. A removable safety plate is provided at the first slot to prevent the wing plate from coming out of the second slot; a second spring and a lifting bolt are provided inside the drag bar sleeve to pull the top block outward, thereby loosening the end cap of the plunger when disassembling the syringe, facilitating quick syringe replacement. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the syringe auxiliary push-pull device of this utility model.

[0022] Figure 2 This is a partial cross-sectional view of the second grip.

[0023] Figure 3 This is a structural diagram of the syringe sleeve.

[0024] Figure 4 It has the structure of a snap ring.

[0025] Figure 5 This is a structural diagram of the push rod sleeve.

[0026] Figure 6 This is a diagram showing the installation of the syringe.

[0027] Explanation of key figure labels:

[0028] 100 - First grip, 110 - Finger sleeve;

[0029] 200-Second grip, 210-Limit stop, 220-Wire hole, 230-Clamping bolt;

[0030] 300 - First Spring;

[0031] 400-Syringe sleeve, 401-First bayonet, 410-First bayonet plate, 411-Second bayonet, 420-First bayonet groove, 430-Pawl, 431-Kneading part, 440-Safety plate, 441-Pawl hole;

[0032] 500-Push rod sleeve, 510-Second clamping plate, 511-Third clamping slot, 520-Second clamping groove, 530-Top block, 540-Plug, 550-Through hole, 560-Second spring, 570-Lifting bolt;

[0033] 600-Circlip, 610-Fourth latch, 620-Reed leaf, 630-Reed opening;

[0034] 700-Limiting Rope;

[0035] 800 - Syringe, 810 - Wing plate, 820 - Push rod, 830 - End cap. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0040] like Figures 1 to 5 As shown, the syringe auxiliary push-pull device in this embodiment includes: a first grip 100, a finger sleeve 110, a second grip 200, a limiting block 210, a threading hole 220, a clamping bolt 230, a first spring 300, a syringe sleeve 400, a first latch 401, a first latching plate 410, a second latching plate 411, a first latching groove 420, a latching claw 430, a pinching part 431, a safety plate 440, a latching hole 441, a push rod sleeve 500, a second latching plate 510, a third latching plate 511, a second latching groove 520, a top block 530, a plug 540, a through hole 550, a second spring 560, a lifting bolt 570, a retaining spring 600, a fourth latching plate 610, a spring sheet 620, a spring opening 630, a limiting rope 700, and a clamping bolt 230.

[0041] One end of the first handle 100 and one end of the second handle 200 are rotatably connected to form an openable V-shaped structure. The two ends of the first spring 300 are fixedly connected to opposite sides of the first handle 100 and the second handle 200, and the spring body is curved. A syringe sleeve 400 is installed at the other end of the first handle 100, and a push rod sleeve 500 is installed at the other end of the second handle 200. The middle part of the syringe sleeve 400 is rotatably connected to the other end of the first handle 100, and its rotation axis is parallel to the rotation axis at the connection point between the first handle 100 and the second handle 200. The push rod sleeve... The middle part of the syringe sleeve 400 rotates with the other end of the second handle 200, and the axis of rotation is parallel to the axis of rotation at the connection between the handle and the second handle 200. A first upward-facing latch 401 is provided on the side of the syringe sleeve 400, and the two ends of the first latch 401 pass through the two ends of the syringe sleeve 400. A retaining spring 600 is fixedly installed inside the syringe sleeve 400, and a fourth latch 610 is provided on one side of the retaining spring 600. A first retaining plate 410 is provided at the end of the syringe sleeve 400 facing the push rod sleeve 500, and a first retaining groove 4 is provided between the first retaining plate 410 and the end face of the syringe sleeve 400. 20. A second latch 411 is provided on the first latch plate 410; a second latch plate 510 is fixedly provided at one end of the push rod sleeve 500 facing the syringe sleeve 400, a second latching groove 520 is provided between the second latch plate 510 and the end face of the push rod sleeve 500, a third latch 511 is provided on the second latch plate 510, and a top block 530 that can move toward the second latch plate 510 is installed inside the push rod sleeve 500; the second latch 411, the third latch 511 and the fourth latch 610 are aligned with the direction of the first latch 401; a first grip 100 is provided on the side away from the second grip 200. The finger sleeve 110 with a waist-shaped structure can cover the four fingers other than the thumb. A limiting block 210 protruding outward is provided on the side of the second handle 200 away from the first handle 100. The limiting block 210 is located near the rotating connection end of the second handle 200. A limiting rope 700 is also connected between the first handle 100 and the second handle 200. The limiting rope 700 is made of steel wire or chain and has high tensile strength. One end of the limiting rope 700 is fixedly connected to the first handle 100, and the other end of the limiting rope 700 is fixedly connected to the second handle 200 in an adjustable manner.

[0042] More specifically, the retaining ring 600 is provided with two or more sets of springs 620. The two sets of springs 620 are respectively provided at both ends of the retaining ring 600. One end of the spring 620 is fixedly connected to the inner side of the retaining ring 600, and the other end of the spring 620 is close to the center line of the retaining ring 600. The other ends of the two sets of springs 620 are in the same direction. Multiple spring openings 630 are provided circumferentially at the other end of the spring 620, and the other end of the spring 620 is rolled inward towards the inner side of the retaining ring 600.

[0043] More specifically, a threading hole 220 is provided on the side of the second handle 200 facing the first handle 100. Both ends of the threading hole 220 can pass through from the side of the second handle 200 facing the first handle 100 to form two openings. The center line of the threading hole 220 is curved so that the threading hole 220 forms an arc-shaped tubular cavity inside the second handle 200. The limiting rope 700 can pass through one opening into the threading hole 220 and then pass out from the other opening. A clamping bolt 230 is installed on the side of the second handle 200 facing away from the first handle 100. The clamping bolt 230 is a headless bolt. The end of the clamping bolt 230 passes through the middle of the threading hole 220 and can tighten the other end of the limiting rope 700.

[0044] Additionally, a safety plate 440 is provided at the second bayonet 411. One end of the first bayonet 410 is fixedly connected to one end of the syringe sleeve 400. The second bayonet 411 is located at the other end of the first bayonet 410. Two jaws 430 are provided at the other end of the first bayonet 410, symmetrically arranged on both sides of the second bayonet 411. The two sides of the first slot 420 pass through both sides of the syringe sleeve 400. A locking hole 4 is provided at each end of the safety plate 440. 41. The locking hole 441 can penetrate the top and bottom of the safety plate 440 and match the locking claw 430. The locking claw 430 can pass through the locking hole 441 and lock into the top surface of the safety plate 440. The safety plate 440 has a certain degree of toughness and its middle part can be slightly bent. A protruding pinching part 431 is provided on the top of the locking claw 430. When the two pinching parts 431 are pinched in the middle at the same time, the locking claw 430 can be disengaged from the locking hole 441, thereby removing the safety plate 440.

[0045] Furthermore, one end of the second clamping plate 510 is fixedly connected to one end of the push rod sleeve 500, and the third clamping opening 511 is opened at the other end of the first clamping plate 410. The width of the second clamping groove 520 is greater than the width of the third clamping opening 511. A plug 540 is installed at the other end of the push rod sleeve 500, and a through hole 550 is opened on the plug 540. A second spring 560 is installed between the top block 530 and the plug 540. The second spring 560 can push the top block 530 to slide towards the second clamping plate 510. The threaded end of the lifting bolt 570 passes through the through hole 550 and is threadedly connected to the top block 530. The nut end of the lifting bolt 570 is located outside the push rod sleeve 500 and its diameter is greater than the diameter of the through hole 550. When the nut end of the lifting bolt 570 is pulled outward, the top block 530 can be moved away from the second clamping plate 510.

[0046] Next, as Figure 6 As shown, the method of using a syringe-assisted push-pull device in this embodiment will be described in detail to enable those skilled in the art to better understand this utility model:

[0047] In use, the syringe barrel is inserted between the spring plates 620 of the retaining spring 600, the wing plate 810 of the syringe barrel 800 is inserted into the first retaining groove 420, and the safety plate 440 is fastened to the retaining claw 430. The syringe plunger 820 extends outward from the second retaining slot 411, the end cap 830 of the plunger 820 is inserted into the second retaining groove 520, the plunger near the end cap 830 passes through the third retaining slot 511, and then the top block 530 is pressed against the end cap, thereby fixing the syringe. When medication needs to be dispensed, the first grip 100 and the second grip 200 are directly squeezed together, causing the plunger sleeve 500 to move closer to or further away from the syringe sleeve 400, thereby realizing the push-pull operation of the syringe, drawing in and withdrawing medication; and when the first spring 300 springs the first grip 100 and the second grip 200 apart, the included angle between the first grip 100 and the second grip 200 can be limited by the limiting rope 700, and the working length of the limiting rope 700 can be adjusted according to the actual shape of the syringe to prevent the opening angle of the first grip 100 and the second grip 200 from being too large and damaging the structure of the syringe.

[0048] In summary, the first handle 100 and the second handle 200 of the syringe auxiliary push-pull device in this embodiment form a movable V-shaped structure. The syringe barrel and plunger are respectively fixed to the movable ends of the first handle 100 and the second handle 200. The operation of pushing the syringe can be formed by the squeezing force of the palm. The restoring force of the first spring 300 can automatically pull the syringe open. The palm force improves the efficiency of pushing and pulling the syringe compared with the traditional finger force. Moreover, the structure is simple, the cost is low, and the portability is high, making it suitable for clinical use.

[0049] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A syringe auxiliary push-pull device, comprising a first handle and a second handle, one end of the first handle and one end of the second handle being rotatably connected, a first spring being provided between the first handle and the second handle, a syringe sleeve being provided at the other end of the first handle, and a push rod sleeve being provided at the other end of the second handle, characterized in that: The middle part of the syringe sleeve is rotatably connected to the first handle, and the middle part of the push rod sleeve is rotatably connected to the second handle. A first latch is provided on the side of the syringe sleeve, which passes through both ends of the syringe sleeve. A retaining spring is provided inside the syringe sleeve. A first retaining plate is provided at the end of the syringe sleeve facing the push rod sleeve, and a first retaining groove is provided between the first retaining plate and the end face of the syringe sleeve. A second latch is provided on the first retaining plate. A second retaining plate is provided at the end of the push rod sleeve facing the syringe sleeve, and a second retaining groove is provided between the second retaining plate and the end face of the push rod sleeve. A third latch is provided on the second retaining plate. A top block that can move toward the second retaining plate is provided inside the push rod sleeve. The second latch and the third latch are in the same direction as the first latch.

2. The syringe-assisted push-pull device according to claim 1, characterized in that, A finger sleeve is provided on the side of the first grip away from the second grip.

3. The syringe-assisted push-pull device according to claim 1, characterized in that, A limiting block protruding outward is provided on the side of the second grip away from the first grip.

4. The syringe-assisted push-pull device according to claim 1, characterized in that, It also includes a limiting rope, one end of which is fixedly connected to the first handle, and the other end of which is fixedly connected to the second handle in an adjustable manner.

5. The syringe-assisted push-pull device according to claim 4, characterized in that, A threading hole is provided on the side of the second handle facing the first handle. Both ends of the threading hole can pass through the side of the second handle facing the first handle. The center line of the threading hole is curved. A clamping bolt is provided on the side of the second handle facing away from the first handle. The end of the clamping bolt passes through the middle of the threading hole and tightens the other end of the limiting rope.

6. The syringe-assisted push-pull device according to claim 1, characterized in that, The retaining ring has a fourth notch on one side, which is aligned with the first notch. The retaining ring has two or more sets of spring sheets inside. One end of each spring sheet is fixedly connected to the inside of the retaining ring, and the other end of each spring sheet approaches the centerline of the retaining ring. Several spring openings are provided around the other end of each spring sheet, and the other end of each spring sheet is rolled inward toward the inside of the retaining ring.

7. The syringe-assisted push-pull device according to claim 1, characterized in that, One end of the first clamping plate is fixedly connected to one end of the syringe sleeve. The second clamping opening is opened at the other end of the first clamping plate. Two clamping claws are provided at the other end of the first clamping plate and are symmetrically arranged on both sides of the second clamping opening. The two sides of the first clamping groove pass through the two sides of the syringe sleeve.

8. The syringe-assisted push-pull device according to claim 7, characterized in that, It also includes a safety plate, with a locking hole at each end of the safety plate, the locking hole being able to pass through the top and bottom of the safety plate and match the locking claw.

9. The syringe-assisted push-pull device according to claim 8, characterized in that, A protruding pinching part is provided on the top of the claw.

10. The syringe-assisted push-pull device according to claim 1, characterized in that, One end of the second clamping plate is fixedly connected to one end of the push rod sleeve. The third latch is opened at the other end of the first clamping plate. The width of the second slot is greater than the width of the third latch. A plug is provided at the other end of the push rod sleeve. A through hole is opened on the plug. A second spring is provided between the top block and the plug. The second spring can push the top block to slide towards the second clamping plate. It also includes a lifting bolt. The threaded end of the lifting bolt passes through the through hole and is threadedly connected to the top block. The nut end of the lifting bolt is located outside the push rod sleeve and its diameter is greater than the diameter of the through hole.

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