CN211187285U

CN211187285U - Blood taking device

Info

Publication number: CN211187285U
Application number: CN201921622299.9U
Authority: CN
Inventors: 孔朝红; 魏佳军; 张兆辉; 江健; 吕媛
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-08-07
Anticipated expiration: 2029-09-27

Abstract

The utility model provides a blood taking device, including columniform casing and with the casing can be dismantled the cylindrical lid of getting blood of connection, the one end of getting blood lid and keeping away from the casing is connected with adjusting part, adjusting part keeps away from the one end of getting blood lid and is equipped with the mouth of getting blood, get blood be equipped with in the lid with get the coaxial and communicating removal passage of blood mouth, be equipped with in the removal passage and be used for the fixed cylindrical needle file of getting the blood needle of getting, the casing is equipped with and is used for the drive the needle file is followed removal passage reciprocating motion's excitation subassembly, still be equipped with in the removal passage and be used for blockking the spacing portion that the needle file removed, adjusting part is used for the drive spacing portion is followed removal passage moves. The utility model provides a get blood device can the person of facilitating the use adjust the degree of depth that gets into the human body of blood needle to adapt to the different blood requirements of getting.

Description

Blood taking device

Technical Field

The application relates to the field of medical auxiliary instruments, in particular to a blood taking device.

Background

Often need get the blood to the patient and examine in the hospital, the blood lid of getting of being connected is mainly dismantled including columniform casing and with casing one end to the present blood device of getting, the one end of getting the blood lid is equipped with gets the blood mouth and its inside moving channel who is equipped with and gets the blood mouth intercommunication, be equipped with in the moving channel and be used for the fixed needle file of getting the blood needle, still be equipped with at the casing and be used for driving the needle file along moving channel reciprocating motion's excitation subassembly with the drive get the blood needle stretch out get the blood mouth after the retraction carry out the operation of getting the blood, but this kind of blood device can not adjust when using get the blood needle and stretch out the distance of getting the blood mouth, the puncture depth of getting the blood needle is difficult to adjust according to the puncture position of difference, can not adapt to the requirement of getting the blood of various.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a blood taking device, concrete technical scheme is:

the utility model provides a get blood device, include columniform casing 100 and with the casing 100 can dismantle the cylindrical lid 200 of getting blood of being connected, the one end of getting blood lid 200 and keeping away from casing 100 is connected with adjusting part, adjusting part keeps away from the one end of getting blood lid 200 and is equipped with and gets blood mouth 210, get blood be equipped with in the lid 200 with get the coaxial and communicating removal passage 220 of blood mouth 210, be equipped with in the removal passage 220 and be used for the fixed cylindrical needle file 230 of getting blood needle 500, casing 100 is equipped with and is used for the drive the needle file 230 is followed removal passage 220 reciprocating motion's excitation subassembly, still be equipped with in the removal passage 220 and be used for blockking spacing portion 240 that needle file 230 removed, adjusting part is used for the drive spacing portion 240 is followed removal passage 220 removes.

The limiting part 240 includes an annular limiting plate 241 and a limiting cylinder 242 connected to the limiting plate 241.

The adjusting assembly comprises a rotatable adjusting ring 400 arranged between the blood taking cover 200 and the limiting cylinder 242, wherein the adjusting ring 400 is in threaded connection with the inner wall of one end, close to the blood taking cover 200, of the limiting cylinder 242 and the outer wall of one end, close to the blood taking opening 210, of the limiting cylinder 242.

The inner wall of the blood taking cover 200 is provided with an annular clamping groove 250 extending along the circumferential direction, and the outer wall of the adjusting ring 400 is provided with an elastic clamping ring 410 which is rotatably clamped with the clamping groove 250.

The inner wall of the blood taking cover 200 is connected with a supporting cylinder 243, an annular supporting channel 244 is formed between the supporting cylinder 243 and the blood taking cover 200, and at least a part of the limiting cylinder 242 is slidably arranged in the supporting channel 244.

A supporting cylinder 243 is connected to the inner wall of the housing 100, an annular supporting channel 244 is formed between the supporting cylinder 243 and the blood taking cover 200, and at least a part of the limiting cylinder 242 is slidably disposed in the supporting channel 244.

The outer wall of the limiting cylinder 242 is provided with a limiting groove 245 extending along the axial direction of the limiting cylinder, and the inner wall of the blood taking cover 200 is convexly provided with a limiting block 260 sliding in the limiting groove 245.

The excitation assembly comprises an excitation channel 310 which is arranged in the shell 100 and is coaxially arranged and communicated with the moving channel 220, and a push rod 320 which is slidably arranged in the excitation channel 310; one end of the push rod 320 close to the needle seat 230 is detachably connected with the needle seat 230, and one end far away from the needle seat 230 is provided with a spring 340 and a driving lever 330; the spring 340 is positioned in the excitation channel 310, and two ends of the spring 340 are respectively connected with the push rod 320 and the inner wall of the shell 100 at the end part of the excitation channel 310; one end of the shifting lever 330, which is far away from the push rod 320, is laterally arranged perpendicular to the push rod 320, and the end of the shifting lever penetrates through the side wall of the housing 100, and the housing 100 is provided with an opening 110 for the shifting lever 330 to move along the excitation channel 310.

The limiting plate 241 is made of an elastic material, a polyethylene material, a rubber material or a metal material. .

The snap ring 410 is made of silicone.

When in use, a user firstly rotates the blood taking cover 200 to separate the blood taking cover 200 from the shell 100, then fixes the needle handle 520 of the blood taking needle 500 on the needle seat 230 through the mounting groove 231 on the needle seat 230, connects the needle seat 230 with the push rod 320 through the connecting groove 232 on the needle seat 230, then rotates the blood taking cover 200 to connect the blood taking cover 200 with the shell 100, so that the needle seat 230 enters the moving channel 220 in the blood taking cover 200, and the limiting part 240 is sleeved on the needle seat 230, at this time, the user can rotate the adjusting ring 400 to drive the limiting part 240 to move along the supporting channel 244 and the moving channel 220 through the adjusting ring 400, thereby driving the limiting plate 241 at one end of the limiting part 240 to move to a proper distance, finally, the user uses fingers to push the shift lever 330 to move along the opening 110, and uses the shift lever 330 to drive the push rod 320 and the needle seat 230 to move along the moving channel 220 and the excitation channel 310, when a user loosens the shifting lever 330, the spring 340 resets to push the push rod 320 to drive the needle seat 230 and the blood taking needle 500 to move along the excitation channel 310 and the moving channel 220 in sequence, so that the needle body 510 of the blood taking needle 500 penetrates through the annular limiting plate 241 and then extends out of the blood taking port 210 to take blood, then the needle seat 230 continues to move along the moving channel 220 until the needle body 510 of the blood taking needle 500 is pushed against the limiting plate 241 to penetrate into the deepest part of human tissues, then the needle seat 230 collides with the limiting plate 241 and then moves reversely along the moving channel 220, and therefore the needle body 510 of the blood taking needle 500 is driven to be separated from the human tissues to finish blood taking.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model provides a get blood device includes the casing and can dismantle the lid of getting blood of being connected with casing one end, get the blood lid be equipped with get the blood mouth and with get the moving channel of blood mouth intercommunication, be equipped with the needle file that is used for the fixed needle of getting blood in the moving channel, the casing still is equipped with and stimulates the subassembly, it is used for driving the needle file and removes along moving channel to stimulate the subassembly, so that get the blood needle and stretch out to get the withdrawal behind the blood mouth and get blood, be equipped with the spacing portion that is used for blockking the needle file in the moving channel, the outer wall of getting the blood lid still is equipped with and is used for driving the. The application provides a get blood device can the person of facilitating the use adjust the degree of depth that gets blood needle entering human body to adapt to the different blood requirements of getting.

Drawings

Fig. 1 is a cross-sectional view of a blood sampling device provided in embodiment 1 of the present invention;

fig. 2 is a cross-sectional view of a blood sampling device provided in embodiment 2 of the present invention;

in the figure: 100-shell, 110-opening, 200-blood taking cover, 210-blood taking opening, 220-moving channel, 230-needle seat, 231-mounting groove and 232-connecting groove; 240-limit part, 241-limit plate, 242-limit cylinder, 243-support cylinder, 244-support channel, 245-limit groove, 250-clamp groove, 260-limit block, 310-excitation channel, 320-push rod, 330-deflector rod, 340-spring, 400-adjusting ring, 410-clamp ring, 500-blood taking needle, 510-needle body and 520-needle handle.

Detailed Description

The present invention will be described in further detail below with reference to the following drawings and detailed description, wherein the described embodiments are part of the embodiments of the application, but not all embodiments, and the components of the embodiments of the application generally described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

Example 1

As shown in fig. 1, an embodiment of the present application provides a blood sampling device, which includes a cylindrical housing 100 and a cylindrical blood sampling cap 200 connected to one end of the housing 100 through a thread, a blood sampling port 210 is disposed at one end of the blood sampling cap 200 away from the housing 100, a moving channel 220 coaxial and communicated with the blood sampling port 210 is disposed in the blood sampling cap 200, a cross section of the moving channel 220 is circular, a cylindrical needle hub 230 for fixing a blood sampling needle 500 is disposed in the moving channel 220, the blood sampling needle 500 includes a hollow tubular needle body 510 and a needle handle 520 connected to the needle body 510, an installation groove 231 clamped with the needle handle 520 is disposed at one end of the needle hub 230, and a connection groove 232 is disposed at the other end of the needle hub 230; a limiting part 240 for blocking the needle seat 230 is arranged in the moving channel 220, and the limiting part 240 comprises a limiting plate 241 made of annular polyurethane and a limiting barrel 242 connected with the limiting plate 241;

the end, provided with the blood taking port 210, of the blood taking cover 200 is further connected with an adjusting assembly for driving the limiting part 240 to move along the moving channel 220, the adjusting assembly comprises an adjusting ring 400 rotatably arranged between the blood taking cover 200 and the limiting part 240, the inner wall of the adjusting ring 400 is in threaded connection with the outer wall of the limiting cylinder 242, the inner wall of the blood taking cover 200 is connected with a supporting cylinder 243, an annular supporting channel 244 is formed between the supporting cylinder 243 and the blood taking cover 200, and one end, far away from the limiting plate 241, of the limiting cylinder 242 is slidably arranged in the supporting channel 244; the inner wall of the blood taking cover 200 is provided with an annular clamping groove 250 extending along the circumferential direction, the outer wall of the adjusting ring 400 is provided with an elastic clamping ring 410 which is rotatably clamped with the clamping groove 250, the outer wall of the limiting cylinder 242 is clamped with a limiting groove 245 extending along the axial direction, the inner wall of the blood taking cover 200 is convexly provided with a limiting block 260 which is slidably arranged in the limiting groove 245, and the clamping ring 410 is made of silica gel.

The housing 100 is further provided with an actuating assembly for driving the needle hub 230 along the moving channel 220, the blood taking needle 500 is retracted out of the blood taking port 210 to take blood, the excitation assembly comprises an excitation channel 310 arranged in the shell 100, a push rod 320 arranged in the excitation channel 310 in a sliding manner, a shift lever 330 connected with the push rod 320 and a spring 340, the section of the excitation channel 310 is circular, the excitation channel 310 and the moving channel 220 are coaxially arranged and communicated when the shell 100 is connected with the blood taking cover 200, the push rod 320 and the spring 340 are sequentially arranged in the excitation channel 310, one end of the push rod 320, far away from the spring 340, is connected with a connecting groove 232 on the needle seat 230 through threads, one end of the spring 340 is connected with the push rod 320, the other end of the spring 340 is connected with the inner wall of the shell 100 at the end part of the excitation channel 310, one end of the shift lever 330, far away from the push rod 320, penetrates through the; as toggle 330 moves along opening 110, push rod 320 is driven to move along firing channel 310.

When the blood sampling device provided by the embodiment of the application is used, a user firstly rotates the blood sampling cover 200 to separate the blood sampling cover 200 from the shell 100, then fixes the needle handle 520 of the blood sampling needle 500 on the needle base 230 through the mounting groove 231 on the needle base 230, connects the needle base 230 with the push rod 320 through the connecting groove 232 on the needle base 230, then rotates the blood sampling cover 200 to connect the blood sampling cover 200 with the shell 100, so that the needle base 230 enters the moving channel 220 in the blood sampling cover 200, and the limiting part 240 is sleeved on the needle base 230, at this time, the user can rotate the adjusting ring 400 to drive the limiting part 240 to move along the supporting channel 244 and the moving channel 220 through the adjusting ring 400, so as to drive the limiting plate 241 at one end of the limiting part 240 to move to a proper distance, finally, the user pushes the shift rod 330 to move along the opening 110 with a finger, and drives the push rod 320 and the needle base 230 to sequentially move along the moving channel 220 and the excitation channel 310 to, when a user loosens the shifting lever 330, the spring 340 resets to push the push rod 320 to drive the needle seat 230 and the blood taking needle 500 to move along the excitation channel 310 and the moving channel 220 in sequence, so that the needle body 510 of the blood taking needle 500 penetrates through the annular limiting plate 241 and then extends out of the blood taking port 210 to take blood, then the needle seat 230 continues to move along the moving channel 220 until the needle body 510 of the blood taking needle 500 is pushed against the limiting plate 241 to penetrate into the deepest part of human tissues, then the needle seat 230 collides with the limiting plate 241 and then moves reversely along the moving channel 220, and therefore the needle body 510 of the blood taking needle 500 is driven to be separated from the human tissues to finish blood taking.

Wherein, the inner wall of the lid 200 of getting blood and the outer wall of adjustable ring 400 pass through draw-in groove 250 and rotatable snap ring 410 elastic clamping, can guarantee to get the relative axial position between the lid 200 and the adjustable ring 400 fixed, and do not influence the rotatory adjustable ring 400 of user and rotate for getting blood lid 200, the user also can be very convenient with elastic snap ring 410 card establish or break away from draw-in groove 250 in order to assemble the adjustable ring 400 or lift off and get blood lid 200, get blood lid 200 inner wall and spacing section of thick bamboo 242 outer wall and pass through stopper 260 and spacing groove 245 slip joint, can only follow its axial displacement and can not follow circumferential direction through stopper 260 injecture spacing section of thick bamboo 242, guarantee that the stable operation of getting blood of following axial displacement of the spacing section of thick bamboo 242 of adjustable ring 400 drive.

The blood sampling device that this application embodiment provided can the person of facilitating the use adjust the position of limiting plate 241 and adjust the collision position of needle file 230 with limiting plate 241 to the needle body 510 of adjusting blood sampling needle 500 stretches out the length of getting blood mouth 210, so that adjust the depth that human tissue was pierced to the needle body 510 of getting blood needle 500, be convenient for adapt to the various different circumstances of getting blood.

In some alternative embodiments, the excitation assembly may also be used with other linear motion driving mechanisms to drive the needle seat 230 to reciprocate along the moving channel 220 for blood sampling, such as a screw-nut motor driving mechanism, a worm-and-gear motor driving mechanism, or a rack-and-pinion motor driving mechanism.

In some optional embodiments, the position-limiting plate 241 in the position-limiting portion 240 may be made of an elastic material, a polyethylene material, a rubber material, or the like, or made of a metal material such as iron, copper, or the like, so as to meet different use requirements.

Example 2

As shown in fig. 2, the present embodiment provides a blood sampling device, which has substantially the same structure as the blood sampling device provided in embodiment 1, except that in this embodiment, the support cylinder 243 is not connected to the inner wall of the blood sampling cap 200, but connected to the inner wall of the housing 100, and when the housing 100 and the blood sampling cap 200 are connected, one end of the support cylinder 243 protrudes into the moving channel 220 and forms an annular support channel 244 between the blood sampling caps 200.

The embodiment of the present application provides the support cylinder 243 connected to the housing 100, and forms the support channel 244 between the support cylinder 243 and the cap 200 when the housing 100 and the cap 200 are connected, and the support channel 244 limits the movement of the limiting cylinder 242, thereby ensuring that the limiting cylinder 242 is stably driven to move along the support channel 244 and the moving channel 220 when the user rotates the adjusting ring 400.

The embodiments described above are some, but not all embodiments of the present invention, and it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. A blood sampling device, characterized by: comprises a cylindrical shell (100) and a cylindrical blood taking cover (200) detachably connected with the shell (100), one end of the blood taking cover (200) far away from the shell (100) is connected with an adjusting component, one end of the adjusting component far away from the blood taking cover (200) is provided with a blood taking port (210), a moving channel (220) which is coaxial and communicated with the blood taking port (210) is arranged in the blood taking cover (200), a cylindrical needle seat (230) for fixing the blood taking needle (500) is arranged in the moving channel (220), the housing (100) is provided with an excitation assembly for driving the needle hub (230) to reciprocate along the moving channel (220), a limiting part (240) for blocking the needle seat (230) from moving is also arranged in the moving channel (220), the adjusting component is used for driving the limiting part (240) to move along the moving channel (220).

2. The blood-drawing device according to claim 1, wherein: the limiting part (240) comprises an annular limiting plate (241) and a limiting barrel (242) connected with the limiting plate (241).

3. The blood-drawing device according to claim 2, wherein: the adjusting assembly comprises a rotatable adjusting ring (400) arranged between the blood taking cover (200) and the limiting cylinder (242), wherein the adjusting ring (400) is close to the inner wall of one end of the blood taking cover (200) and the outer wall of one end of the limiting cylinder (242) close to the blood taking opening (210) in threaded connection.

4. The blood-drawing device according to claim 3, wherein: get blood lid (200) inner wall and offer along its circumference extending ring groove (250), adjustable ring (400) outer wall be equipped with rotatably with snap ring (410) of draw-in groove (250) joint.

5. The blood-drawing device according to claim 3, wherein: the inner wall of the blood taking cover (200) is connected with a supporting cylinder (243), an annular supporting channel (244) is formed between the supporting cylinder (243) and the blood taking cover (200), and at least one part of the limiting cylinder (242) is arranged in the supporting channel (244) in a sliding mode.

6. The blood-drawing device according to claim 3, wherein: a supporting cylinder (243) is connected to the inner wall of the shell (100), an annular supporting channel (244) is formed between the supporting cylinder (243) and the blood taking cover (200), and at least one part of the limiting cylinder (242) is arranged in the supporting channel (244) in a sliding mode.

7. The blood-drawing device according to claim 3, wherein: the outer wall of the limiting cylinder (242) is provided with a limiting groove (245) extending along the axial direction of the limiting cylinder, and the inner wall of the blood taking cover (200) is convexly provided with a limiting block (260) sliding in the limiting groove (245).

8. The blood-drawing device according to claim 1, wherein: the excitation assembly comprises an excitation channel (310) which is arranged in the shell (100) and is coaxially arranged with the moving channel (220) and communicated with the moving channel, and a push rod (320) which is arranged in the excitation channel (310) in a sliding way; one end of the push rod (320) close to the needle seat (230) is detachably connected with the needle seat (230), and one end far away from the needle seat (230) is provided with a spring (340) and a shifting rod (330); the spring (340) is positioned in the excitation channel (310), and two ends of the spring are respectively connected with the push rod (320) and the inner wall of the shell (100) at the end part of the excitation channel (310); one end of the shifting rod (330) far away from the push rod (320) is laterally arranged perpendicular to the push rod (320), the tail end of the shifting rod penetrates through the side wall of the shell (100), and an opening (110) for the shifting rod (330) to move along the excitation channel (310) is formed in the shell (100).

9. The blood-drawing device according to claim 2, wherein: the limiting plate (241) is made of an elastic material, a polyethylene material, a rubber material or a metal material.

10. The blood-drawing device according to claim 4, wherein: the snap ring (410) is made of silicone.