CN211068440U - Prevent venous return and keep somewhere needle - Google Patents

Abstract

The utility model relates to the technical field of medical indwelling needle equipment, in particular to an anti-venous return indwelling needle, which comprises an infusion joint, an extension tube, a needle holding handle, a transparent tee joint, a catheter and a steel needle, wherein a single-hand clamp is sleeved on the tube body of the outer surface of the extension tube, a fixed seat is fixedly arranged at one end of the inner cavity of the single-hand clamp, two tube holes positioned at the tube placing frame are also formed in the outer surface of the fixed seat, slide rails are formed on the inner walls of the two sides of the single-hand clamp, a slide block is connected on the slide rails in a sliding manner, guide rods are connected on the slide block in a sliding manner, and a clamping plate is fixedly arranged between the two guide rods; the utility model discloses possess durable to can strengthen the one-hand clamp and press from both sides tight ability to the extension pipe, make the result of use that the one-hand pressed from both sides better.

Description

Prevent venous return and keep somewhere needle

Technical Field

The utility model relates to a medical treatment indwelling needle equipment technical field, concretely relates to prevent vein backward flow indwelling needle.

Background

The venous indwelling needle is also called as venous trocar, the core component comprises a soft catheter which can be indwelling in the blood vessel and a stainless puncture guiding needle core, when in use, the catheter and the needle core are punctured into the blood vessel together, when the catheter is completely inserted into the blood vessel, the needle core is withdrawn, and only the soft catheter is indwelling in the blood vessel, thereby carrying out transfusion treatment.

The venous indwelling needle is divided into an on-off type (Y type) and an off-off type (straight type), while the infusion joint connected with the indwelling needle is commonly used in three types, namely a heparin cap, a mechanical valve type and a separating membrane type, and the infusion joints of the types are currently commonly used.

At present, most single-hand clamps all have the clamping degree relatively poor, and long-time use appears mechanical ageing's the condition in the hinge of chuck part easily, in case mechanical ageing appears in the hinge, then leads to the chuck that single-hand clamp to lose the clamp force easily, perhaps the chuck is released by the negative pressure or the malleation in the extension tube easily, causes the palirrhea condition of blood to appear very easily, can take place the condition of stifled pipe even.

SUMMERY OF THE UTILITY MODEL

The utility model provides a needle is kept somewhere to anti venous return, possesses durable to can strengthen the one-hand clamp and press from both sides tight ability to the extension pipe, make the result of use that the one-hand clamp was pressed from both sides better.

The utility model discloses a vein backflow prevention indwelling needle, which comprises a transfusion joint, an extension pipe, a needle holding handle, a transparent tee joint, a catheter and a steel needle, wherein a single-hand clamp is sleeved on the pipe body of the outer surface of the extension pipe, a fixed seat is fixedly arranged at one end of the inner cavity of the single-hand clamp, pipe placing frames are fixedly connected with two sides of the fixed seat, two pipe holes at the pipe placing frames are also arranged on the outer surface of the single-hand clamp, slide rails are arranged on the inner walls of the two sides of the single-hand clamp, a slide block is connected on the slide rails in a sliding way, guide rods are connected on the slide block in a sliding way, a clamping plate is fixedly arranged between the two guide rods, a magnet is fixedly arranged at one end of the clamping plate close to the fixed seat, a magnet groove is arranged on one end surface of the fixed seat close to the clamping plate, the magnet and the magnet groove are mutually adsorbed, a plurality of, the gears are meshed with teeth of the guide rod, a connecting rod is connected between the two gears, and a rotating handle is connected in the inner cavity of the other gear in a key mode.

The utility model discloses a needle is kept somewhere in anti-venous return, wherein all install the pulley on two inner walls of tube hole, the central line in the tube hole centre of a circle is in on the same vertical straight line with the centrobaric central line of fixing base.

The utility model discloses a needle is kept somewhere in anti-venous return, wherein put the one end salient in fixing base of pipe support, and put the pipe support and include two limiting plates, two limiting plates are located one side inner wall that the pipe hole was kept away from to the one hand clamp respectively.

The utility model discloses a needle is kept somewhere in venous return prevention, wherein the centre of a circle of two tube holes is in on the same straight line, has all laminated the rubber strip on the inner wall of two tube holes.

The utility model discloses a prevent venous return and keep somewhere needle, wherein splint's one end that is close to the tube hole salient in the one end that the guide arm is close to the tube hole.

The utility model discloses a needle is kept somewhere in venous return prevention, wherein the area of overlooking of splint is the same with the area of overlooking of fixing base, and the length and width of overlooking of splint all is longer than the diameter of tube hole.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. The utility model discloses a singlehanded clamp that sets up, adopt the mode of gear adjustment guide arm, make splint and put the mutual lock of pipe support and be in the same place, thereby it is tight to pass the extension pipe clamp in the tube hole, and the cooperation has mutual absorbent magnetite and magnetite groove, can make the probability that the extension pipe that is pressed from both sides tightly reduces the bounce-back, thereby the probability that backward flow and stifled pipe phenomenon take place appears in the reduction, and the mode that this singlehanded clamp adopted is more durable than general hinge, the mechanical ageing probability has been reduced to chuck part appearance, thereby reached and used more safety and convenient purpose.

2. The utility model is used for fixing the extension pipe in the center of the pipe placing frame through the arranged pipe hole and the pulley, thereby being convenient for compressing the center of the pipe body in the pipe placing frame when the clamping plate is pressed down, and further achieving the best clamping effect; on the other hand, the position of the single-hand clamp can be conveniently moved through the pulley, so that the single-hand clamp can be positioned at different positions according to different actually used infusion connectors, and the best using effect is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of the structure of the indwelling needle of the present invention;

FIG. 2 is a side cross-sectional partial structure view of the one-handed clamp;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the structure at B in FIG. 2;

FIG. 5 is a front cross-sectional structural view of the single-handed clamp;

Fig. 6 is a front sectional structure diagram of the one-hand clip.

In the figure: 1. an infusion connector; 2. an extension tube; 3. clamping with a single hand; 31. a gear; 32. a splint; 33. a guide bar; 34. a slide rail; 35. placing a pipe frame; 36. a fixed seat; 37. teeth; 38. a slider; 39. a magnet; 310. a tube hole; 311. a magnet groove; 312. a pulley; 313. a handle is rotated; 314. a connecting rod; 4. a needle holding handle; 5. a transparent tee joint; 6. a conduit; 7. and (4) a steel needle.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1-6, the anti-venous-reflux indwelling needle of the present embodiment includes an infusion connector 1, an extension tube 2, a needle holder 4, a transparent tee joint 5, a catheter 6 and a steel needle 7, a single-handed clamp 3 is sleeved on a tube body of an outer surface of the extension tube 2, a fixed seat 36 is fixedly disposed at one end of an inner cavity of the single-handed clamp 3, tube holders 35 are fixedly connected to two sides of the fixed seat 36, two tube holes 310 located at the tube holders 35 are further formed in an outer surface of the single-handed clamp 3, slide rails 34 are disposed on inner walls of two sides of the single-handed clamp 3, a slide block 38 is slidably connected to the slide rails 34, guide rods 33 are slidably connected to the slide block 38, a clamp plate 32 is fixedly disposed between the two guide rods 33, a magnet 39 is fixedly disposed at one end of the clamp plate 32 close to the fixed seat 36, a magnet groove 311 is formed in one end surface of the fixed seat 36 close, two gears 31 are arranged on the inner walls of two sides of the inner cavity of the single-hand clamp 3 through bearings, the gears 31 are meshed with the teeth 37 of the guide rod 33, a connecting rod 314 is connected between the two gears 31, and a rotating handle 313 is further connected in the inner cavity of the other gear 31 in a key mode.

Pulleys 312 are arranged on the two inner walls of the pipe hole 310, and the center line of the circle center of the pipe hole 310 and the center line of the gravity center of the fixed seat 36 are positioned on the same longitudinal straight line; the utility model, through the arrangement of the pipe hole 310 and the pulley 312, on one hand, is used for fixing the extension pipe 2 at the center inside the pipe placing frame 35, so that when the clamping plate 32 is pressed down, the center of the pipe body inside the pipe placing frame 35 can be exactly pressed, and the best clamping effect is achieved; on the other hand, the position of the single-hand clamp 3 can be conveniently moved through the pulley 312, so that the single-hand clamp 3 can be positioned at different positions according to different actually used infusion connectors 1, and the best use effect is achieved.

One end of the pipe placing frame 35 protrudes out of the fixed seat 36, and the pipe placing frame 35 comprises two limiting plates which are respectively positioned on the inner wall of one side of the one-hand clamp 3 away from the pipe hole 310; the centers of the two pipe holes 310 are located on the same straight line, the inner walls of the two pipe holes 310 are all attached with rubber strips, and the friction force between the extension pipe 2 and the pipe holes 310 is conveniently improved due to the design of the rubber strips, so that the phenomenon that the single-hand clamp 3 slides randomly on the extension pipe 2 is avoided.

The end of the clamping plate 32 near the tube hole 310 protrudes from the end of the guide rod 33 near the tube hole 310.

The area of the clamping plate 32 viewed from above is the same as that of the fixing base 36, and the length and width of the clamping plate 32 viewed from above are longer than the diameter of the pipe hole 310, which is beneficial for the clamping plate 32 to cover the pipe rack 35 and clamp the pipe body of the extension pipe 2 in the single-hand clamp 3.

When the utility model is used (working principle), the extension tube 2 passes through the two tube holes 310 of the single-hand clamp 3, then the single-hand clamp 3 is moved to a proper position of the extension tube 2, after the infusion is completed, whether the extension tube 2 is clamped firstly is selected according to the operation steps, when the extension tube 2 needs to be clamped, the rotating handle 313 drives the connecting rod 314 and the two gears 31 connected with the rotating handle 313 to rotate together, the rotating gears 31 push the guide rod 33 engaged with the rotating gears to the direction of the tube placing frame 35 (the height of the tube placing frame 35 is only slightly higher than the fixed seat 36, and the height of the tube placing frame 35 does not influence the moving range of the sliding rail 34 and the guide rod 33, in particular referring to the attached drawings 5 and 6), thereby the clamp plate 32 is driven to move to the direction of the tube placing frame 35, when the clamp plate 32 moves to the tube holes 310, the pressure of the clamp plate 32 can press the part of the extension tube 2 placed in the single-hand, then, the magnet 39 below the clamp plate 32 is pressed into the magnet groove 311 with the crushed portion of the extension pipe 2, and the magnet 39 and the magnet groove 311 are attracted to each other, thereby completing clamping of the extension pipe 2.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (6)

1. The utility model provides a needle is kept somewhere in anti-venous return, includes infusion joint (1), extension pipe (2), holds needle handle (4), transparent tee bend (5), pipe (6) and steel needle (7), has cup jointed one-hand clamp (3), its characterized in that on the pipe shaft of the surface of extension pipe (2): the one end that singlehanded clamp (3) inner chamber has set firmly fixing base (36), pipe support (35) are put to the both sides fixedly connected with of fixing base (36), two tube holes (310) that are located to put pipe support (35) department have still been seted up to the surface that singlehanded clamp (3), slide rail (34) have been seted up on the both sides inner wall of singlehanded clamp (3), sliding connection has slider (38) on slide rail (34), sliding connection has guide arm (33) on slider (38), two splint (32) have been set firmly between guide arm (33), splint (32) are close to the one end of fixing base (36) and have been set firmly magnetite (39), magnet groove (311) have been seted up to the terminal surface that fixing base (36) are close to splint (32), magnetite (39) with magnet groove (311) adsorbs each other, a plurality of teeth (37) have been seted up along the body of rod to one side of guide arm (33), two gears (31) are installed through the bearing on the both sides inner wall of singlehanded clamp (3) inner chamber, gear (31) and tooth (37) intermeshing of guide arm (33), two be connected with connecting rod (314) between gear (31), and in the inner chamber of another gear (31) still the key-type have turning handle (313).

2. The anti-venous return indwelling needle of claim 1, wherein: pulleys (312) are mounted on the two inner walls of the pipe hole (310), and the center line of the circle center of the pipe hole (310) and the center line of the gravity center of the fixing seat (36) are located on the same longitudinal straight line.

3. The anti-venous return indwelling needle of claim 1, wherein: put one end salient in fixing base (36) of pipe support (35), and put pipe support (35) and include two limiting plates, two limiting plates are located one side inner wall that singlehanded clamp (3) kept away from tube hole (310) respectively.

4. The anti-venous return indwelling needle of claim 1, wherein: the centers of the two pipe holes (310) are positioned on the same straight line, and rubber strips are attached to the inner walls of the two pipe holes (310).

5. The anti-venous return indwelling needle of claim 1, wherein: one end of the clamping plate (32) close to the pipe hole (310) protrudes out of one end of the guide rod (33) close to the pipe hole (310).

6. The anti-venous return indwelling needle of claim 1, wherein: the top view area of the clamping plate (32) is the same as that of the fixing seat (36), and the top view length and width of the clamping plate (32) are all longer than the diameter of the pipe hole (310).

Images