Blood sampling needle holder

Abstract

The utility model provides a blood sampling needle holder, relates to the technical field of medical instruments, and solves the problem that a needle head falls off from a sleeve due to the fact that a bayonet and a clamping groove are easy to abrade when the sleeve is used for many times in the prior art. The blood sampling needle holder comprises a sleeve which is used for being held to carry out blood sampling action on a patient; the needle cylinder is fixedly installed on the sleeve, the needle cylinder comprises a needle head end, the needle head end protrudes out of the sleeve, the needle cylinder further comprises an output end, and the needle cylinder is fixedly installed on the needle cylinder; an inner cavity is formed in the needle cylinder in a penetrating mode, the fixing mechanism is installed at one end of the needle cylinder, the output end of the needle cylinder is inserted into the inner cavity, and the novel fixing mechanism is adopted to replace a traditional buckle type connection mode, so that the stability of connection between the needle head and the sleeve can be remarkably improved; and even after being used for many times, the blood sampling tube is not easy to loosen or fall off, so that the safety and the smoothness of the blood sampling process are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially is involved in a kind of blood collection needle holder. BACKGROUND

[0002] Blood collection needle holder is a kind of medical appliance, mainly used to assist medical staff to carry out venous blood sampling operation. It can help to fix needle, so that blood sampling process is more stable and safe, reduces the risk of accidental movement of needle, so as to reduce the discomfort or potential harm felt by patient due to needle movement. In addition, using blood collection needle holder can also improve blood sampling efficiency, reduce the operation difficulty of medical staff, especially in the case of needing long time or repeatedly collecting blood samples.

[0003] At present, the common connection mode of blood collection needle holder is buckle type connection. In this design, one end of needle can be designed with a bayonet or a clamping groove, which can be quickly and easily buckled with the corresponding part on the sleeve. This way facilitates quick assembly and disassembly, improving work efficiency. However, since the sleeve is usually used as a reusable component, wear and tear phenomenon is likely to occur between the bayonet and the clamping groove during multiple uses. Wear and tear will cause the connection between the needle and the sleeve to become unstable, thereby increasing the risk of needle falling off from the sleeve during use, which not only affects the smooth progress of blood sampling, but also may cause unnecessary harm to the patient.

[0004] Therefore, it is urgent to develop a blood collection needle holder to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of blood collection needle holder to solve the technical problem that bayonet and clamping groove are prone to wear and tear between sleeve during multiple uses in prior art, which can cause needle to fall off from sleeve. The preferred technical solutions in many technical solutions provided by the utility model can produce many technical effects, which are described in detail below.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a kind of blood collection needle holder, comprising:

[0008] Sleeve, for holding to carry out blood sampling action to patient;

[0009] Needle cylinder, fixedly installed on sleeve, needle cylinder includes needle end for puncturing in patient's skin, the needle end protrudes from sleeve setting, the needle cylinder further includes output end for connecting to receive blood, the needle cylinder is fixedly installed on needle cylinder;

[0010] The fixed mechanism is installed at one end of the needle cylinder for fixing the needle cylinder to the end of the sleeve, and the output end is inserted into the inner cavity.

[0011] Further, the fixed mechanism includes a fixed plate fixedly installed at the end of the sleeve, a connecting seat is arranged at the joint of the needle end and the fixed end of the needle cylinder, at least two trapezoidal blocks are fixedly connected on the connecting seat, the connecting seat is inserted into the fixed plate and protrudes at both ends, and a clamping groove is arranged on the fixed plate for clamping the trapezoidal blocks during movement of the needle cylinder.

[0012] Further, the positioning block is in the shape of a trapezoidal block, the width of one end of the trapezoidal block fixedly connected to the connecting seat is smaller than the width of the other end away from the connecting seat, and the width of the trapezoidal block increases with the increase of the insertion depth during insertion into the clamping groove.

[0013] Further, the fixed mechanism includes a fixed plate fixedly installed at the end of the sleeve, a connecting seat is arranged at the joint of the needle end and the fixed end of the needle cylinder, at least two trapezoidal blocks are fixedly connected on the connecting seat, the connecting seat is inserted into the fixed plate and protrudes at both ends, and a clamping groove is arranged on the fixed plate for clamping the trapezoidal blocks during movement of the needle cylinder.

[0014] Further, the fixed plate is screw-connected to the end of the sleeve, the inner cavity of the sleeve is in a tapered shape, the inner diameter of the inner cavity of the sleeve connected to the end of the sleeve is smaller, and the fixed plate is slid in the sleeve after being unscrewed and the needle end of the needle cylinder is accommodated in the inner cavity.

[0015] Further, the fixed mechanism further includes at least one limiting block fixedly connected to the inner wall of the sleeve, and the limiting block is arranged on the sliding path of the fixed plate to block the fixed plate from excessive sliding and disengagement from the sleeve.

[0016] Further, the fixed mechanism further includes at least two clamping plates, the fixed plate is provided with an embedding groove, two clamping plates are arranged in each embedding groove, the clamping plates are fixedly connected to the side wall of the embedding groove, the clamping plates are spacedly adhered to the side wall of the embedding groove, the embedding groove is used for insertion of the limiting block during sliding of the fixed plate, the limiting block is inserted into the embedding groove to separate the clamping plates, and the clamping plates are positioned between the limiting block and the side wall of the embedding groove.

[0017] Further, the clamping plates are arranged in a semicircular shape, the radial side walls of the clamping plates are fixedly connected to the side walls of the embedding groove, the semicircular end faces of the two clamping plates are oppositely arranged, the clamping plates are provided with a plurality of spaced connecting strips connected to the side walls of the embedding groove along the circular side wall, and the connecting strip is also arranged at the edge of the diameter of the clamping plate towards the bottom surface of the embedding groove and is flipped over.

[0018] Further, a needle seat is arranged at the connection between the needle end and the connecting seat, the diameter of the needle seat is greater than the diameter of the needle end, the side wall of the needle seat is provided with two clamping faces, and the two clamping faces are oppositely arranged to facilitate clamping of the needle carrying fixed plate rotation.

[0019] Further, a needle sleeve for sleeving the needle end is mounted on the needle seat, and the needle sleeve is rotationally arranged on the needle seat.

[0020] The utility model provides a blood sampling needle holder, aims at solving the problem that the bayonet and the clamping groove are prone to wear between the sleeve in the prior art during multiple use, which can cause the needle to fall off from the sleeve. The technical effect of the device is reflected in the following aspects:

[0021] Enhance stability: by adopting a new fixing mechanism to replace the traditional buckle type connection mode, the stability of the connection between the needle and the sleeve can be significantly improved, and even after multiple uses, it is not easy to loosen or fall off, thereby ensuring the safety and smoothness of the blood sampling process.

[0022] Improve patient comfort: since the connection between the needle and the sleeve is more secure, the needle is less likely to shift during blood sampling, thus reducing the discomfort or potential harm to the patient caused by needle shaking, and improving the patient's treatment experience.

[0023] The deficiencies in the prior art are effectively improved, not only improving the reliability of the equipment, but also taking into account the actual needs of users, and having good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 It is the overall structure schematic diagram provided by the embodiment 1 of the utility model;

[0026] Figure 2It is the internal structure sectional view provided by the embodiment 1 of the utility model;

[0027] Figure 3 It is the fixed plate structure schematic view provided by the embodiment 1 of the utility model;

[0028] Figure 4 It is the internal structure schematic view provided by the embodiment 1 of the utility model;

[0029] Figure 5 It is the needle cylinder structure schematic view provided by the embodiment 2 of the utility model;

[0030] Figure 6 It is the fixed plate structure schematic view provided by the embodiment 2 of the utility model.

[0031] The sign of figure is explained: 100, sleeve; 200, needle cylinder; 210, connecting seat; 220, needle head seat; 230, clamping surface; 240, needle head cover; 250, positioning block; 310, fixed plate; 320, clamping groove; 330, ring groove; 340, embedding groove; 350, clamping plate; 360, limiting block. Specific implementation

[0032] In order to make the purpose, technical scheme and advantage of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other implementation manners obtained by the ordinary skill in the art without making creative labor belong to the range of the utility model.

[0033] In the description of the utility model, it is necessary to explain that, unless otherwise stated, the meaning of "multiple" is two or more than two;The orientation or position relation indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it can not be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and can not be understood as indicative or implied relative importance.

[0034] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term " install ", " link ", " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can through the intermediate medium indirectly connect.For ordinary skilled person in the art, the above-mentioned term can be understood according to the specific circumstances the specific meaning of the utility model.

[0035] The following describes the utility model in conjunction with the accompanying drawings Figures 1-6 Further detailed description of the present application, the embodiment of the present application discloses a blood collection needle holder.

[0036] Embodiment 1

[0037] Referring to Figure 1 And Figure 2 As shown in a kind of blood collection needle holder, including sleeve 100, needle cylinder 200 and fixed mechanism.The inside of sleeve 100 is through and is provided with inner cavity, this inner cavity not only is used to accommodate fixed mechanism, and also provides space for the installation of needle cylinder 200.Needle cylinder 200 includes needle end for puncturing the skin of patient and output end for connecting and carrying blood.During installation, the output end of needle is inserted into the inner cavity by one end of sleeve 100, and is firmly connected by fixed mechanism.Due to the more firm and reliable connection between needle and sleeve 100, needle is not prone to displacement when actually blood collecting, which not only reduces the discomfort of patient due to needle shaking, but also further ensures the safety and comfort of treatment process.

[0038] Referring to Figure 1 And Figure 2 As shown in needle cylinder 200, the middle part is fixedly connected with connecting seat 210, and connecting seat 210 is arranged at the connecting place of needle end and output end.Two positioning blocks 250 are arranged on connecting seat 210, and the two positioning blocks 250 are evenly arranged along the circumferential direction of connecting seat 210.

[0039] Fixed mechanism includes fixed plate 310 installed at the end of sleeve 100, and fixed plate 310 is screw-connected with sleeve 100, that is, fixed plate 310 is provided with external thread, and the inner wall of sleeve 100 is provided with internal thread, and fixed plate 310 is fixedly installed at the end of sleeve 100 by the intermeshing of threads.

[0040] In this way, after the blood collection needle holder is used, needle cylinder 200 installed on fixed plate 310 is retracted in sleeve 100 by rotating fixed plate 310, so as to avoid the secondary use of blood collection needle holder, and reduce the space occupied by blood collection needle holder during processing.

[0041] The center of the fixing plate 310 is provided with a through hole, the connecting seat 210 passes through the through hole, and the connecting seat 210 is tightly fitted to the side wall of the through hole. The side of the fixing plate 310 facing the inner cavity is provided with two clamping grooves 320 for the positioning blocks 250 to pass through, and the inside of the fixing plate 310 is provided with two arc-shaped ring grooves 330, the two ring grooves 330 correspond to the two clamping grooves 320, and are respectively and correspondingly arranged.

[0042] In use, the staff rotates the needle cylinder 200 to drive the two positioning blocks 250 on the connecting seat 210 to align with the two clamping grooves 320, pulls the two positioning blocks 250 to slide into the two clamping grooves 320, and then rotates the positioning blocks 250 again to make the two positioning blocks 250 enter the ring grooves 330, and the top surface and the bottom surface of the positioning blocks 250 abut against the upper and lower two side walls of the sliding groove, respectively. In this way, the connection between the positioning blocks 250 and the fixing plate 310 during use of the blood sampling needle holder improves the connectivity between the needle cylinder 200 and the sleeve 100, thereby ensuring the stability of the blood sampling needle holder during use.

[0043] In this process, the cooperation of the positioning blocks 250 with the clamping grooves 320 and the ring grooves 330 can also be identified, and the position can be determined whether to use, and it is convenient to observe the use of the blood sampling needle holder, thereby ensuring the use of the blood sampling needle holder. The safety of hygiene.

[0044] The fixing mechanism further comprises at least one limiting block 360, and in the embodiment, the limiting block 360 is provided with two limiting blocks 360 which are fixedly connected to the inner wall of the sleeve 100 and are away from the connecting seat 210. When the blood sampling needle holder is used and the connecting seat 210 and the needle cylinder 200 are stored in the sleeve 100, the fixing plate 310 is arranged to slide along the inside of the sleeve 100, and the limiting block 360 is arranged on the sliding path of the fixing plate 310 to block the fixing plate 310 from sliding excessively and separating from the sleeve 100.

[0045] The fixing mechanism further comprises at least two clamping plates 350, and the fixing plate 310 is provided with two embedding grooves 340 corresponding to the limiting blocks 360, and each embedding groove 340 is provided with two clamping plates 350. The clamping plates 350 are arranged in a semicircular shape, that is, the two clamping plates 350 are symmetrically arranged in the embedding groove 340, and the arc surfaces of the two clamping plates 350 are oppositely arranged.

[0046] That is, the straight surface of the clamping plate 350 is fixedly connected to the side wall of the embedding groove 340, and the semicircular side walls of the two clamping plates 350 are adhered to each other, so as to form a plurality of connecting strips which are uniformly arranged along the semicircular side wall of the clamping plate 350. And the clamping plate 350 connected to the side wall of the embedding groove 340 is also arranged in an adhered manner.

[0047] When the fixed plate 310 is inserted into the inside of the sleeve 100, the embedded groove 340 corresponds to the limiting block 360. When the limiting block 360 is inserted into the embedded groove 340, the middle part of the two clamping plates 350 is inserted, so as to break the connecting line between the two clamping plates 350. The two clamping plates 350 are turned over with the side wall of the embedded groove 340, so as to be inserted between the two clamping plates 350 with the movement of the limiting block 360. The clamping plate 350 reduces the space to enhance the clamping of the limiting block 360 in the embedded groove 340. Moreover, the staff can also judge whether the blood collection needle holder is used by judging the breaking of the clamping plate 350.

[0048] Referring to Figure 1 and Figure 2 , the needle end is provided with a needle seat 220 at the connection with the connecting seat 210. The diameter of the needle seat 220 is greater than that of the needle end. Two clamping surfaces 230 are formed on the circumferential side wall of the needle seat 220. During use, the staff can rotate the needle seat 220 and the fixed plate 310 by holding the two clamping surfaces 230, or push the needle seat 220 and the fixed plate 310 to slide along the inside of the needle cylinder 200, so as to avoid the staff being injured and facilitate the staff to operate the movement of the fixed plate 310.

[0049] The needle end is provided with a needle cover 240, which is hinged to the needle seat 220. That is, the needle cover 240 is in a cylindrical shape, and an opening is formed on one side of the needle cover 240. In this way, the needle cover 240 is turned to make the needle end leak out, and the staff is prevented from being injured during use.

[0050] Embodiment 2

[0051] Referring to Figure 5 and Figure 6 , the difference between this embodiment and embodiment 1 is that the connection mode between the connecting seat 210 and the fixed plate 310 is different.

[0052] At least two positioning blocks 250 are arranged on the connecting seat 210, and the two positioning blocks 250 are uniformly arranged along the circumferential direction of the connecting seat 210. The positioning block 250 is arranged in a trapezoidal shape, that is, the width of the side of the positioning block 250 facing the fixed plate 310 is less than the width of the side of the positioning block 250 away from the fixed plate 310.

[0053] A clamping groove 320 is formed on the fixed plate 310. During installation, the staff rotates the needle cylinder 200 to drive the two positioning blocks 250 on the connecting seat 210 to align with the two clamping grooves 320, and then pulls the two positioning blocks 250 to slide into the two clamping grooves 320. With the sliding of the positioning block 250, its width gradually increases, which makes the contact between the positioning block 250 and the fixed plate 310 more closely during the sliding process, thereby significantly improving the stability of the connection between the positioning block 250 and the fixed plate 310.

[0054] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A blood collection needle holder, characterized in that: include: A sleeve (100) is used for holding the patient to draw blood; A syringe (200) is fixedly mounted on the sleeve (100), the syringe (200) includes a needle end for puncturing the patient's skin, the needle end protruding from the sleeve (100), and the syringe (200) also includes an output end for connecting to receive blood, and the syringe (200) is fixedly mounted on the syringe (200); A fixing mechanism is provided, wherein an inner cavity is provided through the interior of the syringe (200), and the fixing mechanism is installed at one end of the syringe (200) for fixing the syringe (200) to the end of the sleeve (100), and the output end is inserted into the inner cavity.

2. A blood collection needle holder according to claim 1, characterized in that: The fixing mechanism comprises a fixing plate (310) fixedly mounted on the end of the sleeve (100); a connecting seat (210) is provided at the connection between the needle end and the fixing end of the syringe (200); at least two trapezoidal block positioning blocks (250) are fixedly connected to the connecting seat (210); the connecting seat (210) is inserted into the fixing plate (310) and has protruding ends; a clamping groove (320) is provided on the fixing plate (310) for clamping the trapezoidal block positioning blocks (250) when the syringe (200) is pulled to move during use of the needle holder.

3. The blood collection needle holder according to claim 2, characterized in that: The positioning block (250) is arranged in a trapezoidal block, the width of one end of the trapezoidal block fixedly connected to the connecting seat (210) is smaller than the width of the end away from the connecting seat (210), and the width of the trapezoidal block increases as the insertion depth increases during the insertion of the trapezoidal block into the card slot (320).

4. The blood collection needle holder according to claim 1, characterized in that: The fixing mechanism includes a fixing plate (310) fixedly mounted on the end of the sleeve (100), a connecting seat (210) is provided at the connection between the needle end and the fixing end of the syringe (200), a positioning block (250) is fixedly connected to the connecting seat (210), the connecting seat (210) is slidably arranged on the fixing plate (310), a slot (320) for the positioning block (250) to pass through is provided on the fixing plate (310), and an annular groove (330) with one end connected to the slot (320) is further provided in the fixing plate (310). During use, the syringe (200) first slides on the fixing plate (310) and drives the positioning block (250) to be inserted into the slot (320), and then the syringe (200) is rotated to drive the positioning block (250) to rotate in the slot (320) and the upper and lower ends abut against the side walls of the annular groove (330).

5. A blood collection needle holder according to claim 2 or 4, characterized in that: The fixing plate (310) is threadedly connected to the end of the sleeve (100), the inner cavity of the sleeve (100) is tapered, and the inner diameter of the inner cavity of the end of the sleeve (100) connected to the fixing plate (310) is smaller. The fixing plate (310) is unthreaded and slides inside the sleeve (100) to accommodate the needle end of the syringe (200) in the inner cavity.

6. The blood collection needle holder according to claim 5, characterized in that: The fixing mechanism further includes at least one limiting block (360), wherein the limiting block (360) is fixedly connected to the inner wall of the sleeve (100), and the limiting block (360) is arranged on the sliding path of the fixing plate (310) to prevent the fixing plate (310) from excessively sliding off the sleeve (100).

7. The blood collection needle holder according to claim 6, characterized in that: The fixing mechanism further comprises at least two clamping plates (350), the fixing plate (310) is provided with an embedding groove (340), and two clamping plates (350) are correspondingly arranged in each embedding groove (340), the clamping plates (350) are fixedly connected to the side walls of the embedding groove (340), and the clamping plates (350) are adhered to the side walls of the embedding groove (340) in an interval-like manner, and the embedding groove (340) is used for inserting a limit block (360) during the sliding process of the fixing plate (310), and the limit block (360) is inserted into the embedding groove (340) and pushes open the connection of the clamping plates (350) so that the clamping plates (350) are located between the limit block (360) and the side walls of the embedding groove (340) to form a limited positioning.

8. The blood collection needle holder according to claim 7, characterized in that: The clamping plate (350) is arranged in a semicircular shape, and the radial side wall of the clamping plate (350) is fixedly connected to the side wall of the embedding groove (340). The semicircular end faces of the two clamping plates (350) are arranged opposite to each other. The clamping plate (350) is provided with a plurality of spaced connecting strips connected to the side wall of the embedding groove (340) along the circular side wall. The edge of the diameter of the clamping plate (350) facing the bottom surface of the embedding groove (340) is also provided with a connecting strip, and is turned over by the connecting strip.

9. The blood collection needle holder according to claim 5, characterized in that: A needle seat (220) is provided at the connection between the needle end and the connecting seat (210). The diameter of the needle seat (220) is larger than the diameter of the needle end. The side wall of the needle seat (220) is provided with two clamping surfaces (230). The two clamping surfaces (230) are arranged relative to each other to facilitate the clamping of the needle and the rotation of the fixing plate (310).

10. The blood collection needle holder according to claim 9, characterized in that: A needle cover (240) for being sleeved on the needle end is mounted on the needle seat (220), and the needle cover (240) is rotatably mounted on the needle seat (220).

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