CN219021202U - Needle holder for blood sampling - Google Patents

Abstract

The utility model discloses a needle holder for blood sampling, and relates to the field of medical equipment. In the needle holder for blood collection, the sheath is provided with a mounting hole communicated with the inner cavity of the needle holder. The fixing frame is fixed at the top of the sheath, a connecting through hole is formed between the fixing frame and the fixing frame, the support is fixed at the connecting through hole, the first pushing piece and the second pushing piece can be connected to the connecting through hole in a sliding mode along the first direction, and the fixing frame is provided with a clamping block. In the first push plate, a first side plate and elastic supporting legs are fixed on a first main plate, the first side plate downwards extends into the mounting hole, and clamping grooves are formed in the elastic supporting legs. In the bracket, the second side plate is fixed on the second main plate and extends downwards into the mounting hole. The second pushing piece comprises a pushing plate. The first main board moves towards the push plate to enable the clamping groove to be clamped in the clamping block, and the first side plate and the second side plate are buckled to form an internal threaded hole in the clamping state. The push plate moves towards the first main board to release the clamping connection between the clamping groove and the clamping block. The blood taking needle can be assembled and disassembled by pushing the first pushing piece or the second pushing piece by one hand, so that the blood taking needle can be assembled and disassembled conveniently.

Description

Needle holder for blood sampling

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a needle holder for blood sampling.

Background

Clinically, the blood taking needle and the vacuum blood taking tube are used in a large scale as a collection mode of human blood samples, and in the process of multitube blood taking of the same patient by adopting the blood taking needle and the vacuum blood taking tube, the blood taking needle exposed outside is extremely easy to stab medical staff. In order to protect medical staff, a needle holder is used for fixing a blood taking needle for operation when medical blood taking is performed.

An existing needle holder is an integrally formed injection molding piece, and is provided with a threaded hole which is in threaded connection with external threads on a blood taking needle. However, when the lancet is attached and detached, the lancet needs to be rotated to lock and separate the thread between the lancet and the needle holder, which is inconvenient to operate.

Therefore, how to provide a needle holder for conveniently assembling and disassembling a blood taking needle is a technical problem that needs to be solved by the person skilled in the art at present.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a lancet holder for blood collection, which facilitates the attachment and detachment of a lancet.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a needle holder for blood collection, comprising: the device comprises a sheath, a first push piece, a bracket, a fixing frame and a second push piece; the top of the sheath is provided with a mounting hole in a penetrating mode, and the mounting hole is communicated with the inner cavity of the sheath; the fixing frame is fixed at the top of the sheath, a connecting through hole penetrating along a first direction is formed between the fixing frame and the sheath, the bracket is fixed at the connecting through hole, the first pushing piece and the second pushing piece can be connected with the connecting through hole in a sliding manner along the first direction, and a clamping block is arranged on the fixing frame; the first push plate comprises a first main plate, a first side plate and elastic supporting legs, wherein the first side plate and the elastic supporting legs are fixed on the first main plate, the first side plate downwards extends into the mounting holes, clamping grooves are formed in the elastic supporting legs, the support comprises a second main plate and a second side plate, the second side plate is fixed on the second main plate and downwards extends into the mounting holes, the first side plate and the second side plate are sequentially arranged along the first direction, threaded surfaces are respectively arranged on opposite side surfaces of the first side plate and the second side plate, the second push plate comprises a push plate, and the push plate and the first main plate are sequentially arranged along the first direction; the first main board moves towards the push plate in the first direction, so that the clamping grooves are clamped in the clamping blocks, in addition, in the clamping state, the first side plates and the second side plates are buckled to form internal threaded holes, the connecting holes in the fixing frame are communicated with the inner cavities along the vertical direction, and the push plate moves towards the first main board in the first direction to push the elastic supporting legs to deform and release the clamping grooves from being clamped with the clamping blocks, so that the first side plates are far away from the second side plates.

Preferably, a sliding groove is formed in the top surface of the sheath, extends along the first direction and penetrates through the sliding groove, and a sliding block is fixedly arranged on the bottom surface of the first main board; the sliding block is connected with the sliding groove in a sliding manner, and the sliding block and the sliding groove are matched in a sliding manner along the first direction.

Preferably, two second supporting legs are fixedly arranged on the second main board, and in the first direction, the second supporting legs and the second side plates are positioned on the same side of the second main board, and the two second supporting legs are positioned on two sides of the second side plates; the top surface of the second supporting leg and the top surface of the second main board are respectively provided with positioning blocks in an upward protruding mode, the fixing frame is provided with a plurality of positioning grooves, and each positioning block is correspondingly inserted into each positioning groove in an upward mode.

Preferably, each positioning groove is sequentially arranged around the connecting hole, and the positioning groove extends to the hole wall of the connecting hole, so that the positioning groove and the connecting hole form a step structure.

Preferably, the second pushing piece comprises a mounting frame, and in the first direction, the mounting frame is fixed on one side of the pushing plate, which is close to the first main board; the mounting frame is provided with a frame through hole penetrating in the up-down direction, and the bracket extends into the frame through hole; the top surface of the mounting frame is provided with a supporting leg groove, and the second supporting leg is arranged above the supporting leg groove.

Preferably, the second supporting leg and the elastic supporting leg are respectively arranged on the upper side and the lower side of the mounting frame.

Preferably, in the first direction, the elastic supporting legs and the first side plate are located on the same side of the first main plate, the two elastic supporting legs are located on two sides of the first side plate, and an avoidance gap is formed between the elastic supporting legs and the first side plate.

Preferably, two pushing surfaces are arranged at the bottom of the pushing plate and close to the side surface of the first main plate in the first direction; the two pushing surfaces are obliquely arranged, and the distance between the two pushing surfaces is gradually increased in the direction close to the first main board; the free ends of the two elastic supporting legs in the first direction are provided with matching surfaces respectively matched with the two pushing surfaces, so that the corresponding matching surfaces are pushed by the pushing surfaces to drive the corresponding elastic supporting legs to deform, and the clamping grooves and the clamping blocks are correspondingly released.

Preferably, the top surface of the inner cavity is fixedly provided with a reinforcing ring, and the mounting hole is positioned at the inner side of the reinforcing ring; the bottom surface of the first side plate and the bottom surface of the second side plate are arranged above the bottom surface of the reinforcing ring or flush with the bottom surface of the reinforcing ring.

Preferably, the fixing frame comprises a top plate and an elastic vertical plate, the vertical plate is fixed below the top plate, the connecting hole is formed in the top plate, and the clamping block is arranged on the vertical plate; the bottom of the vertical plate is provided with a connecting block, the top end of the sheath is provided with a sheath hole, and the top of the sheath is convexly provided with a sheath arm; and in the downward moving process of the fixing frame, the connecting block can enter and be clamped in the sheath hole under the guidance of the sheath arm.

The utility model provides a needle holder for blood sampling, comprising: the device comprises a sheath, a first push piece, a bracket, a fixing frame and a second push piece; the top of the sheath is provided with a mounting hole in a penetrating way, and the mounting hole is communicated with the inner cavity of the sheath; the fixing frame is fixed at the top of the sheath, a connecting through hole penetrating along a first direction is formed between the fixing frame and the fixing frame, the bracket is fixed at the connecting through hole, the first push piece and the second push piece can be connected with the connecting through hole in a sliding manner along the first direction, and the fixing frame is provided with a clamping block; the first push plate comprises a first main plate, a first side plate and elastic supporting legs, wherein the first side plate and the elastic supporting legs are fixed on the first main plate, the first side plate downwards extends into the mounting hole, a clamping groove is formed in the elastic supporting legs, the bracket comprises a second main plate and a second side plate, the second side plate is fixed on the second main plate and downwards extends into the mounting hole, the first side plate and the second side plate are sequentially arranged along a first direction, threaded surfaces are respectively arranged on opposite side surfaces of the first side plate and the second side plate, the second push plate comprises a push plate, and the push plate and the first main plate are sequentially arranged along the first direction; the first main board moves towards the push plate by leaning on in the first direction, so that the clamping groove is clamped in the clamping block, and in the clamping state, the first side plate and the second side plate are buckled to form an internal threaded hole, the connecting hole and the internal threaded hole on the fixing frame are communicated with the inner cavity along the up-down direction, and the push plate moves towards the first main board by leaning on in the first direction, so that the elastic supporting leg deforms, the clamping groove and the clamping block are released, and the first side plate is further far away from the second side plate.

The needle holder for blood collection is used for protecting medical staff in the blood collection process, and can be assembled and disassembled on the needle holder by pushing the first pushing piece or the second pushing piece by one hand, so that the operation is simplified. In addition, the first side plate and the second side plate are all stretched into the inner cavity through the mounting holes, the first side plate and the second side plate can be limited in the first direction by means of the mounting holes, the first push piece and the support are prevented from being separated from the connecting through holes in the first direction, meanwhile, the length of the blood taking needle stretching into the inner cavity is increased, and blood taking safety is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing a structure of a lancet holder for blood collection according to a specific embodiment of the present utility model after a lancet and a blood collection tube are mounted;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a partial cross-sectional view of FIG. 1;

FIG. 4 is a schematic view showing a structure of a needle holder for blood collection according to a first embodiment of the present utility model;

FIG. 5 is an assembly view of a first pusher, a second pusher, a holder and a holder of a blood collection needle holder according to a first embodiment of the present utility model;

FIG. 6 is a schematic view showing the structure of a holder for a lancet according to a specific embodiment of the present utility model;

FIG. 7 is a schematic view showing another view of the holder of the lancet holder according to the first embodiment of the present utility model;

FIG. 8 is a schematic view showing the structure of a second pushing plate in a first embodiment of the lancet holder for blood collection according to the present utility model;

FIG. 9 is a schematic view showing another view of the second pushing plate of the embodiment of the lancet holder according to the present utility model;

FIG. 10 is a schematic view showing the structure of a holder for a lancet according to a first embodiment of the present utility model;

FIG. 11 is a schematic view showing another view of the holder of the lancet holder according to the first embodiment of the present utility model;

FIG. 12 is a schematic view showing the structure of a first pushing plate of a needle holder for blood collection according to a first embodiment of the present utility model;

FIG. 13 is a schematic view showing another view of the first pushing plate of the needle holder for blood collection according to the first embodiment of the present utility model;

FIG. 14 is a schematic view showing the structure of a sheath in a specific embodiment of a lancet holder according to the present utility model;

FIG. 15 is a schematic view showing a structure of a lancet according to a specific embodiment of the lancet holder for blood collection according to the present utility model;

fig. 16 is a schematic view of a blood collection tube according to a specific embodiment of the blood collection needle holder of the present utility model, and broken lines are internal structures.

Reference numerals:

a blood collection tube 1 and a rubber plug 11;

a blood taking needle 2, an external thread 21 and a needle head 22;

the first pushing piece 3, the first main board 31, the sliding block 311, the first side board 32, the elastic supporting leg 33, the clamping groove 331, the matching surface 332 and the avoidance gap 34;

the second pushing piece 4, the mounting frame 41, the frame through hole 411, the supporting leg groove 412, the pushing plate 42 and the pushing surface 421;

the fixing frame 5, the vertical plate 51, the clamping blocks 511, the connecting blocks 512, the top plate 52, the connecting holes 521 and the positioning grooves 522;

a bracket 6, a second main board 61, a second side board 62, a second supporting leg 63 and a positioning block 64;

sheath 7, mounting hole 71, inner cavity 72, chute 73, reinforcing ring 74, sheath hole 75, sheath arm 76;

an internally threaded bore 8;

a first direction X.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The core of the utility model is to provide a needle holder for blood collection, which is convenient for loading and unloading blood collection needles.

Referring to fig. 1 to 16, in one embodiment of the needle holder for blood collection provided by the present utility model, the needle holder comprises: sheath 7, first push away piece 3, support 6, mount 5, second push away piece 4.

The top of sheath 7 runs through and sets up mounting hole 71, and mounting hole 71 intercommunication sheath 7's inner chamber 72.

The fixing frame 5 is fixed on the top of the sheath 7, a connecting through hole penetrating along the first direction X is formed between the fixing frame 5 and the sheath, the bracket 6 is fixed on the connecting through hole, and the first pushing piece 3 and the second pushing piece 4 can be connected with the connecting through hole in a sliding manner along the first direction X. The fixing frame 5 is provided with a clamping block 511.

The first push plate 3 comprises a first main plate 31, a first side plate 32 and elastic supporting legs 33, wherein the first side plate 32 and the elastic supporting legs 33 are fixed on the first main plate 31, the first side plate 32 extends downwards into the mounting holes 71, and clamping grooves 331 are formed in the elastic supporting legs 33. In addition, the first push plate 3 may be specifically in a plastic structure, and based on the plastic elastic deformation principle, the elastic deformation of the elastic supporting leg 33 is realized, so that the needle holder for blood collection can be repeatedly used.

The bracket 6 includes a second main plate 61 and a second side plate 62, the second side plate 62 is fixed on the second main plate 61 and extends downward into the mounting hole 71, the first side plate 32 and the second side plate 62 are sequentially arranged along the first direction X, and opposite side surfaces of the first side plate 32 and the second side plate 62 are respectively provided with a screw surface.

The second pusher 4 comprises a pusher 42. The push plate 42 and the first main plate 31 are disposed in this order in the first direction X.

In the initial state, the clamping block 511 and the clamping groove 331 are in a state of releasing the clamping connection, the first side plate 32 and the second side plate 62 are in an open state of being far away from each other, and during the assembly process, the blood taking needle 2 extends into one side of the second side plate 62 through the connecting hole 521 on the fixing frame 5, the external thread 21 of the blood taking needle 2 is generally aligned with the thread surface of the second side plate 62 in the first direction X, and the needle head 22 of the blood taking needle 2 extends into the inner cavity 72. The first main plate 31 is pushed to move toward the push plate 42 in the first direction X, that is, in the direction indicated by the straight arrow in fig. 5, so that the clamping groove 331 is clamped to the clamping block 511, and in the clamped state, the first side plate 32 and the second side plate 62 are buckled to form the female screw hole 8, at this time, the connecting hole 521 and the female screw hole 8 on the fixing frame 5 are communicated with the inner cavity 72 in the up-down direction, and the female screw hole 8 clamps the male screw 21 on the blood taking needle 2. Blood collection tube 1 is placed into lumen 72 so that blood collection needle 2 is inserted into blood collection tube 1 to collect blood. Preferably, the first side plate 32 and the second side plate 62 are both semicircular plates, and after the first side plate and the second side plate are buckled, the first side plate and the second side plate are in a circular ring structure, and the inner side of the structure is provided with an internal threaded hole 8.

In the disassembly process, a pushing force is applied to the push plate 42, and the push plate 42 moves towards the first main plate 31 by leaning against in the first direction X to push the elastic supporting leg 33 to deform and release the clamping between the clamping groove 331 and the clamping block 511, so that the first side plate 32 is far away from the second side plate 62, and the blood taking needle 2 can be directly taken out by loosening the blood taking needle 2.

The needle holder for blood collection in the embodiment is used for protecting medical staff in the blood collection process, and the loading and unloading of the blood collection needle 2 on the needle holder can be realized by pushing the first push piece 3 or the second push piece 4 by one hand, so that the operation is simplified. In addition, the first side plate 32 and the second side plate 62 extend into the inner cavity 72 through the mounting holes 71, the first side plate 32 and the second side plate 62 can be limited in the first direction X by means of the mounting holes 71, the first push plate 3 and the bracket 6 are prevented from being separated from the connecting through holes along the first direction X, and meanwhile, the length of the blood taking needle 2 extending into the inner cavity 72 is increased, and blood taking safety is further improved.

Further, as shown in fig. 13 and 14, the top surface of the sheath 7 is provided with a chute 73, the chute 73 extends along the first direction X and penetrates, and the bottom surface of the first main board 31 is fixedly provided with a slider 311. The sliding block 311 is slidably connected to the sliding groove 73, and the sliding block are slidably engaged along the first direction X, so that the sliding stability of the first pushing piece 3 can be improved, and the sliding groove 73 is convenient for processing. Of course, in other embodiments, the first push plate 3 may also define the sliding direction by providing a sliding fit structure with the fixing frame 5.

Further, as shown in fig. 3, 6, 7, 10 and 11, two second legs 63 are fixedly disposed on the second main board 61. In the first direction X, the second leg 63 and the second side plate 62 are located on the same side of the second main plate 61, and the two second legs 63 are located on both sides of the second side plate 62. The top surfaces of the second supporting leg 63 and the second main board 61 are respectively provided with positioning blocks 64 in an upward protruding mode, the fixing frame 5 is provided with a plurality of positioning grooves 522, and each positioning block 64 is correspondingly inserted into each positioning groove 522 in an upward inserting mode.

The number of positioning blocks 64 may be set as required, and in this embodiment, three positioning blocks 64 are provided, specifically, two of the positioning blocks are respectively provided at the free ends of the second legs 63 in the first direction X, and the other one of the positioning blocks is provided on the second main board 61 at a position centered with respect to the two second legs 63.

By the engagement of the positioning block 64 with the positioning groove 522, the movement of the bracket 6 in the first direction X can be reliably avoided, and the assembly is facilitated. Of course, in other embodiments, the bracket 6 may be screw-locked to the sheath 7 for the same limiting purpose.

Further, as shown in fig. 6, each positioning groove 522 is sequentially disposed around the connection hole 521, and the positioning groove 522 extends to the wall of the connection hole 521, so that the positioning groove 522 and the connection hole 521 form a step structure. Through the arrangement of the step structure, the processing position of the positioning groove 522 is convenient to determine, and the processing precision requirement of the positioning block 64 can be reduced because the positioning block 64 can extend out from the corresponding positioning groove 522 towards the center direction of the connecting hole 521.

Further, as shown in fig. 5, 8 and 9, the second push plate 4 includes a mounting frame 41, and in the first direction X, the mounting frame 41 is fixed to the push plate 42 at a side close to the first main plate 31. The mounting frame 41 is provided with a frame through hole 411 penetrating in the up-down direction, and the bracket 6 extends into the frame through hole 411, wherein a certain space is provided in the frame through hole 411 so that the second push piece 4 can slide. The top surface of the mounting frame 41 is provided with a supporting leg groove 412, and the second supporting leg 63 is arranged above the supporting leg groove 412, so that a certain positioning effect can be achieved on the fitting degree of the bracket 6.

Further, as shown in fig. 4 and 5, the second supporting leg 63 and the elastic supporting leg 33 are respectively disposed on the upper and lower sides of the mounting frame 41, and the elastic deformation space of the elastic supporting leg 33 can be avoided by adopting layered arrangement, so that the flexible movement of the elastic supporting leg 33 is not blocked by the bracket 6 and the mounting frame 41.

Further, as shown in fig. 5, in the first direction X, the elastic legs 33 and the first side plate 32 are located on the same side of the first main plate 31, the two elastic legs 33 are located on two sides of the first side plate 32, and an avoidance gap 34 is formed between the elastic legs 33 and the first side plate 32, so that the space where the elastic legs 33 can elastically deform is further increased.

Further, as shown in fig. 5, two pushing surfaces 421 are provided at the bottom of the pushing plate 42 on the side surface near the first main plate 31 in the first direction X. The two pushing surfaces 421 are disposed obliquely, and the distance between the two pushing surfaces gradually increases in the direction approaching the first main board 31. The free ends of the two elastic supporting legs 33 in the first direction X are provided with matching surfaces 332 respectively matched with the two pushing surfaces 421, so that the corresponding matching surfaces 332 are pushed by the pushing surfaces 421 to drive the corresponding elastic supporting legs 33 to deform, and the clamping grooves 331 and the clamping blocks 511 are correspondingly released. The free ends of the two elastic supporting legs 33 are pushed to deform by the two inclined pushing surfaces 421, so that the clamping connection between the two elastic supporting legs 33 and the corresponding clamping blocks 511 is conveniently released.

The clamping surfaces of the clamping blocks 511 and the clamping grooves 331 are obliquely arranged relative to the first direction X, and are specifically the same as the inclination direction of the pushing surface 421 on the same side, so that the unidirectional braking of the clamping blocks 511 on the elastic supporting legs 33 is realized, and the clamping effect during clamping is ensured.

Further, as shown in fig. 3, a reinforcing ring 74 is fixedly provided on the top surface of the inner cavity 72, and the mounting hole 71 is located inside the reinforcing ring 74. The bottom surface of the first side plate 32, the bottom surface of the second side plate 62 is located above the bottom surface of the reinforcing ring 74 or is disposed flush with the bottom surface of the reinforcing ring 74. Because operations such as assembling and disassembling the blood collection tube 1 need to be carried out near the top of the sheath 7, the reinforcing ring 74 is additionally arranged, the structural strength of the top of the sheath 7 can be increased, and the service life of the needle holder can be prolonged, wherein the height of the reinforcing ring 74 can be adaptively set by taking the length of the needle head 22 as a reference, and then the bottom surface positions of the first side plate 32 and the second side plate 62 are set, so long as the bottom surface of the reinforcing ring 74 is not lower than the bottom surface of the reinforcing ring 74, the downward extending length of the needle head 22 can be ensured, and the needle head of the needle head 22 can be inserted into the rubber plug 11 of the blood collection tube 1.

Further, as shown in fig. 7 and 14, the fixing frame 5 includes a top plate 52 and an elastic vertical plate 51, the vertical plate 51 is fixed below the top plate 52, the connection hole 521 is provided on the top plate 52, and the fixture 511 is provided on the vertical plate 51. The connecting block 512 is arranged at the bottom of the vertical plate 51, the top end of the sheath 7 is provided with a sheath hole 75, and the top of the sheath 7 is provided with a sheath arm 76 in a protruding mode. In the downward movement process of the fixing frame 5, the connecting block 512 can enter and be clamped in the sheath hole 75 under the guide of the sheath arm 76, so that in the downward movement assembly process of the fixing frame 5, the vertical plate 51 can automatically and adaptively deform under the action of the sheath arm 76 until the vertical plate extends into and is clamped in the sheath hole 75, and the operation is convenient.

The needle holder for blood sampling that this embodiment provided, theory of operation includes: the bottom end of the blood collection tube 1 extends into the inner cavity 72 to push the first push piece 3, so that the first push piece 3 is clamped on the clamping block 511, and the external thread 21 on the blood collection needle 2 is fixed through the internal thread hole 8 formed between the first push piece 3 and the bracket 6; the blood taking tube 1 with the blood taking needle 2 inserted into the inner cavity 72 performs clinical blood taking operation; the second pushing piece 4 is pushed to enable the first pushing piece 3 to release the clamping connection with the clamping block 511, the first pushing piece 3 is far away from the bracket 6, the clamping of the blood collection tube 1 is released, and the blood collection needle 2 can be taken down.

The blood sampling needle holder that this embodiment provided through the combined action of first pushing piece 3 and second pushing piece 4, can accomplish locking and unblock to blood taking needle 2 screw thread position, easy operation, only needs about the single hand respectively to press the operation when using and can realize locking, unload the needle, reset the whole process to this needle holder does not influence clinical use, and convenient to use is comfortable, has avoided medical personnel's acupuncture to stab completely, does not shelter from the sight, and this needle holder simple structure, simple to operate, low in processing cost, production efficiency height.

It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" is two or more.

The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The needle holder for blood collection provided by the present utility model has been described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. A needle holder for blood collection, comprising: the device comprises a sheath (7), a first pushing piece (3), a bracket (6), a fixing frame (5) and a second pushing piece (4);

the top of the sheath (7) is provided with a mounting hole (71) in a penetrating mode, and the mounting hole (71) is communicated with an inner cavity (72) of the sheath (7);

the fixing frame (5) is fixed at the top of the sheath (7), a connecting through hole penetrating along a first direction (X) is formed between the fixing frame and the sheath, the support (6) is fixed at the connecting through hole, the first pushing piece (3) and the second pushing piece (4) can be connected to the connecting through hole in a sliding mode along the first direction (X), and a clamping block (511) is arranged on the fixing frame (5);

the first push plate (3) comprises a first main plate (31), a first side plate (32) and elastic supporting legs (33), the first side plate (32) and the elastic supporting legs (33) are fixed on the first main plate (31), the first side plate (32) downwards extends into the mounting holes (71), clamping grooves (331) are formed in the elastic supporting legs (33), the support (6) comprises a second main plate (61) and a second side plate (62), the second side plate (62) is fixed on the second main plate (61) and downwards extends into the mounting holes (71), the first side plate (32) and the second side plate (62) are sequentially arranged along the first direction (X), threaded surfaces are respectively arranged on opposite sides of the first side plate (32) and the second side plate (62), the second push plate (4) comprises a push plate (42), and the push plate (42) and the first main plate (31) are sequentially arranged in the first direction (X);

the first main board (31) moves towards the push board (42) by leaning on in the first direction (X), so that the clamping groove (331) is clamped to the clamping block (511), and in a clamping state, the first side board (32) and the second side board (62) are buckled to form an internal threaded hole (8), the connecting hole (521) on the fixing frame (5) is communicated with the inner cavity (72) along the up-down direction, and the push board (42) moves towards the first main board (31) by leaning on in the first direction (X), so that the elastic supporting leg (33) is pushed to deform, the clamping groove (331) and the clamping block (511) are released, and the first side board (32) is further far away from the second side board (62).

2. The needle holder for blood collection according to claim 1, wherein a chute (73) is provided on the top surface of the sheath (7), the chute (73) extends in the first direction (X) and is provided therethrough, and a slider (311) is fixedly provided on the bottom surface of the first main plate (31); the sliding block (311) is connected to the sliding groove (73) in a sliding manner, and the sliding block and the sliding groove are matched in a sliding manner along the first direction (X).

3. The needle holder for blood collection according to claim 1, wherein two second legs (63) are fixedly arranged on the second main plate (61), and in the first direction (X), the second legs (63) and the second side plate (62) are positioned on the same side of the second main plate (61), and the two second legs (63) are positioned on both sides of the second side plate (62); the top surface of the second supporting leg (63) and the top surface of the second main board (61) are respectively provided with positioning blocks (64) in an upward protruding mode, the fixing frame (5) is provided with a plurality of positioning grooves (522), and the positioning blocks (64) are respectively correspondingly inserted into the positioning grooves (522) in an upward inserting mode.

4. A needle holder for blood collection according to claim 3, wherein each of the positioning grooves (522) is provided in order around the connection hole (521), and the positioning groove (522) extends to a wall of the connection hole (521) so that the positioning groove (522) and the connection hole (521) form a stepped structure.

5. A needle holder for blood collection according to claim 3, wherein the second push plate (4) comprises a mounting frame (41), the mounting frame (41) being fixed to the push plate (42) on a side close to the first main plate (31) in the first direction (X); a frame through hole (411) penetrating in the up-down direction is formed in the mounting frame (41), and the bracket (6) extends into the frame through hole (411); the top surface of the mounting frame (41) is provided with a supporting leg groove (412), and the second supporting leg (63) is arranged above the supporting leg groove (412).

6. The lancet holder according to claim 5, wherein the second leg (63) and the elastic leg (33) are provided on both upper and lower sides of the mounting frame (41), respectively.

7. The lancet holder according to any one of claims 1 to 6, wherein in the first direction (X), the elastic legs (33) and the first side plate (32) are located on the same side of the first main plate (31), two elastic legs (33) are located on both sides of the first side plate (32), and an escape gap (34) is provided between the elastic legs (33) and the first side plate (32).

8. The lancet holder according to claim 7, wherein two pushing surfaces (421) are provided at the bottom of the push plate (42) on the side surface near the first main plate (31) in the first direction (X); the two pushing surfaces (421) are obliquely arranged, and the distance between the two pushing surfaces is gradually increased in the direction approaching the first main plate (31); the two elastic support legs (33) are provided with matching surfaces (332) which are matched with the two pushing surfaces (421) respectively at the free ends of the first direction (X), so that the corresponding matching surfaces (332) are pushed by the pushing surfaces (421) to drive the corresponding elastic support legs (33) to deform, and the clamping grooves (331) and the clamping blocks (511) are correspondingly released.

9. The lancet holder according to any one of claims 1 to 6, wherein a reinforcing ring (74) is fixedly provided on a top surface of the inner cavity (72), and the mounting hole (71) is located inside the reinforcing ring (74); the bottom surface of the first side plate (32), the bottom surface of the second side plate (62) is positioned above the bottom surface of the reinforcing ring (74) or is arranged flush with the bottom surface of the reinforcing ring (74).

10. The lancet holder according to any one of claims 1 to 6, wherein the holder (5) comprises a top plate (52) and an elastic vertical plate (51), the vertical plate (51) is fixed below the top plate (52), the connection hole (521) is provided on the top plate (52), and the fixture block (511) is provided on the vertical plate (51); the bottom of the vertical plate (51) is provided with a connecting block (512), the top end of the sheath (7) is provided with a sheath hole (75), and the top of the sheath (7) is convexly provided with a sheath arm (76); during the downward movement of the fixing frame (5), the connecting block (512) can enter and be clamped in the sheath hole (75) under the guidance of the sheath arm (76).

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