Needle head picking device

Abstract

The utility model provides a needle head picking device, and relates to the technical field of medical instruments. Comprising a storage barrel, a rotating ring and a plurality of clamping pieces. One end of the storage cylinder is provided with an opening, and the inner diameter of the storage cylinder is gradually reduced in the axial direction of the storage cylinder and away from the opening direction; the clamping pieces are in sliding connection with the storage barrel in the axial direction of the storage barrel, the multiple clamping pieces are arranged at intervals in the circumferential direction of the storage barrel, inserting grooves are formed in the positions, facing the center axis of the storage barrel, of the multiple clamping pieces, and the inserting grooves of the multiple clamping pieces define a containing space used for clamping and picking needle heads; the rotating ring is rotationally connected to the opening, a spiral internal thread is arranged on the inner side of the rotating ring in the circumferential direction, and the inner side of the rotating ring is in threaded connection with the outer side, away from the inserting groove, of the clamping piece. By rotating the rotating ring, the clamping pieces get close to each other, the needle head can be separated and taken out conveniently, the risks that medical staff is infected by blood of a patient and the medical staff is stabbed by the sharp needle head are avoided, and safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a needle removing device. Background Art

[0002] Arterial blood sampling, also known as arterial blood gas analysis, is a reliable indicator for determining whether the body has an acid-base imbalance and the degree of hypoxia. It is also one of the important indicators for rescuing critically ill patients and monitoring during surgery. The conventional arterial blood sampling method is to use a blood collection needle to pierce the patient's artery to collect blood. After the blood collection is completed, the needle of the blood collection needle needs to be removed and collected for unified treatment to avoid needle contamination.

[0003] The traditional method of removing the needle is for medical staff to manually unscrew the needle from the blood collection needle. Since the needle is relatively sharp and is stained with the patient's blood after blood collection, the manual removal method is less safe and can easily injure or infect medical staff. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a needle removal device, which can solve the problem of low safety of the manual needle removal method in the prior art.

[0005] In order to solve the above technical problems, the utility model is achieved as follows:

[0006] The embodiment of the utility model provides a needle removal device, including a storage cylinder, a rotating ring and a plurality of clamping members;

[0007] One end of the storage tube has an opening, and along the axial direction of the storage tube and away from the opening, the inner diameter of at least a part of the storage tube gradually decreases;

[0008] The clamping member extends from the opening into the storage tube, and the clamping member is slidably connected with the storage tube along the axial direction of the storage tube. A plurality of the clamping members are arranged at intervals along the circumference of the storage tube, and a plurality of the clamping members are provided with slots toward the central axis of the storage tube, and the slots of the plurality of the clamping members are arranged to form a receiving space for clamping and removing needles;

[0009] The rotating ring is rotatably connected to the opening, and a spiral internal thread is circumferentially arranged on the inner side of the rotating ring. The inner side of the rotating ring is threadably connected to the outer side of the clamping member away from the slot.

[0010] Optionally, the needle removal device further comprises a pressing rod;

[0011] The pressing rod is at least partially slidably connected to the slot, and the pressing rod is located in the accommodating space.

[0012] Optionally, the pressing rod is provided with a protrusion toward the central axis of the storage tube, and the protrusions of the plurality of pressing rods are used to cooperate in clamping and removing the needle.

[0013] Optionally, the clamping member includes a supporting sheet and a clamping sheet;

[0014] The support sheet is slidably connected to the storage tube, and the support sheet is threadedly connected to the rotating ring. The clamping sheet is obliquely connected to the support sheet, and the clamping sheet is provided with the slot away from the support sheet.

[0015] Optionally, the needle removal device further comprises sterile cotton;

[0016] The disinfecting cotton is located in the storage cylinder.

[0017] Optionally, the needle removal device further comprises a sealing membrane;

[0018] The sealing film is connected to the storage tube and is located between the sterile cotton and the opening. The sealing film seals and covers the sterile cotton.

[0019] Optionally, the protrusion is located at one end of the pressing rod close to the bottom of the storage tube.

[0020] Optionally, parallel to the cross-sectional direction of the storage tube, the surface of the clamping piece is fan-shaped.

[0021] Optionally, the number of the clamping pieces is eight, which are parallel to the cross-sectional direction of the storage tube, and the surface of each clamping piece is fan-shaped with a central angle of 45°.

[0022] Optionally, an anti-slip groove is provided on the outer side of the rotating ring.

[0023] The needle removal device provided by the embodiment of the utility model comprises a storage tube, a rotating ring and a plurality of clamping members. The upper end of the storage tube has an opening, and the inner diameter of at least a part of the storage tube gradually decreases in the axial downward direction, and the clamping member is slidably connected to the inner wall of the storage tube. The clamping member is provided with a slot facing the central axis, i.e., the inner side of the clamping member. The rotating ring is rotatably connected to the outer wall at the opening of the storage tube, and the inner side of the rotating ring is provided with a spiral internal thread along the circumferential direction, the outer side of the clamping member has an external thread, and the inner side of the rotating ring is threadedly connected with the outer side of the clamping member. In actual use, the medical staff first inserts the needle of the blood collection needle into the storage tube from the slot downward, and then rotates the rotating ring, and the spiral internal thread structure on the inner side of the rotating ring rotates accordingly, and the clamping member is driven to rise or fall by friction. When the rotating ring is rotated in the reverse direction, the clamping member moves downward relative to the inner wall of the storage tube along the axial direction of the storage tube. Since the inner diameter of the storage tube gradually decreases in the axial downward direction, the plurality of clamping members gradually move closer together, and the telescopic gap between adjacent clamping members gradually decreases. The accommodating space formed by the slots of the multiple clamping parts gradually shrinks until the multiple slots clamp the position of the blood collection needle near the needle. At this time, the medical staff pulls out the blood collection needle upward, and the needle is separated from the syringe of the blood collection needle due to the clamping effect, completing the needle removal work, and the storage cylinder can be used to store the collection needle. Therefore, compared with the method of manually pulling out the needle, the medical staff does not have to directly touch the needle with their hands, avoiding the risk of the patient's blood infecting the medical staff and the sharp needle stabbing the medical staff, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the needle removal device provided by an embodiment of the utility model;

[0025] Figure 2 This is an exploded view of the needle removal device provided in an embodiment of the utility model;

[0026] Figure 3 It is a cross-sectional view of the internal structure of the needle removal device provided in an embodiment of the utility model.

[0027] Reference numerals:

[0028] 1-storage cylinder, 101-bottom, 102-opening, 2-rotating ring, 3-clamping piece, 301-slot, 31-supporting sheet, 32-clamping sheet, 4-telescopic gap, 5-pressing rod, 51-protrusion, 6-sterilization cotton, 7-sealing film. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the utility model can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0031] Reference Figures 1 to 3 The embodiment of the utility model provides a needle removal device, including a storage tube 1, a rotating ring 2 and a plurality of clamping members 3; one end of the storage tube 1 has an opening 102, and along the axial direction Z of the storage tube 1 and away from the opening 102, the inner diameter of at least a part of the storage tube 1 gradually decreases; the clamping member 3 extends into the storage tube 1 from the opening 102, and the clamping member 3 is slidably connected with the storage tube 1 along the axial direction Z of the storage tube 1, a plurality of the clamping members 3 are arranged at intervals along the circumference of the storage tube 1, and a plurality of the clamping members 3 are opened toward the central axis of the storage tube 1. The slots 301 of the plurality of the clamping members 3 are arranged to form a accommodating space for clamping and removing needles; the rotating ring 2 is rotatably connected to the opening 102, and the inner side of the rotating ring 2 is circumferentially provided with a spiral internal thread, and the inner side of the rotating ring 2 is threadedly connected to the outer side of the clamping member 3 away from the slot 301.

[0032] Specifically, if Figures 1 to 3As shown, the needle removal device provided in this embodiment can be used for removing needles of blood collection needles, puncture needles or other medical sharps. It includes a storage tube 1, a rotating ring 2 and a plurality of clamping members 3. The storage tube 1 is used to store and collect needles to avoid secondary contamination. The upper end of the storage tube 1 opposite to the bottom 101 has an opening 102. The clamping member 3 extends into the storage tube 1 from the opening 102, and along the axial Z direction of the storage tube 1, the clamping member 3 is slidably connected with the inner wall of the storage tube 1, that is, the clamping member 3 can slide up and down relative to the storage tube 1. Its sliding connection method includes but is not limited to the sliding block on the outer side of the clamping member 3 sliding in the sliding groove on the inner wall of the storage tube 1, or a certain assembly gap is formed between the outer side of the clamping member 3 and the inner wall of the storage tube 1, so that the clamping member 3 can slide relative to the storage tube 1. The number of clamping members 3 can be set to three, four or more, and the specific number is determined according to the shape and structure of the blood collection needle. Downward along the axis of the storage tube 1, that is, in the negative Z direction, the inner diameter of at least part of the storage tube 1 gradually decreases. In this embodiment, the inner diameter of the storage tube 1 of the sliding lifting part of the clamping member 3 is gradually reduced. Figure 3 Along the negative Z direction, the inner diameter of the storage tube 1 at the first position is D1, and the inner diameter of the storage tube 1 at the second position is D2, then D1>D2. Multiple clamping members 3 are arranged at intervals along the circumference of the storage tube 1 to form a telescopic gap 4 between two adjacent clamping members 3. Multiple clamping members 3 are arranged to form a circular clamping assembly. Each clamping member 3 is provided with a slot 301 toward the central axis of the storage tube 1, that is, the slot 301 is located on the inner side of the circular clamping assembly. When the clamping member 3 slides from the first position of the storage tube 1 to the second position, the diameter of the circular clamping assembly is reduced, the multiple clamping members 3 gradually move closer to each other, and the telescopic gap 4 between two adjacent clamping members 3 gradually decreases. At the same time, the accommodating space formed by the slots 301 of the multiple clamping members 3 gradually decreases, and vice versa.

[0033] Specifically, if Figures 1 to 3As shown, the rotating ring 2 is rotatably connected to the outer wall of the storage tube 1 at the opening 102. The rotation connection method includes but is not limited to threaded connection, elastic connection or spline connection to realize the rotation of the rotating ring 2 around the axis relative to the storage tube. The inner side of the rotating ring 2 is provided with a spiral internal thread along the circumferential direction, and the rotation axis of the spiral internal thread is consistent with the axis of the rotating ring 2, that is, the spiral internal thread rises axially along the rotating ring 2. The outer side of the clamping member 3 has an external thread, and the inner side of the rotating ring 2 forms a threaded connection with the outer side of the clamping member 3. It can be understood that the threaded connection between the rotating ring 2 and the clamping member 3 in this embodiment is similar to the cooperation between the lead screw and the nut in the field of mechanical transmission, that is, by rotating the rotating ring 2, its spiral internal thread rotates, and the clamping member 3 is driven to rise or fall relative to the storage tube 1 by friction, which converts the rotation of the rotating ring 2 into the linear motion of the clamping member 3. When the rotating ring 2 rotates in the opposite direction, the clamping member 3 slides in the opposite direction. In some embodiments, the medical staff first inserts the needle of the blood collection needle into the storage tube 1 through the slot 301 with the needle tip facing downward, and then rotates the rotating ring 2. For example, when the rotating ring 2 is rotated in the opposite direction, the clamping member slides downward along the negative Z direction, that is, slides from the first position of the storage tube 1 to the second position, and different clamping members 3 gradually move closer to each other, and the expansion gap 4 between two adjacent clamping members 3 gradually decreases. At the same time, the accommodating space formed by the slots 301 of each clamping member 3 gradually shrinks until a plurality of slots 301 clamp the position of the blood collection needle close to the needle tip. At this time, the medical staff pulls out the blood collection needle upward along the positive Z direction, and the needle tip is separated from the syringe of the blood collection needle due to the clamping effect, thereby completing the needle tip removal work, and the storage tube 1 can be used to store the collection needle tip. On the contrary, before the needle removal work begins, the rotating ring 2 can be rotated clockwise to make the clamping parts slide upward along the positive Z direction, and the different clamping parts 3 gradually move away from each other. The accommodating space formed by the slots 301 of each clamping part 3 gradually expands to accommodate blood collection needles of different shapes and sizes.

[0034] The needle removal device provided by the embodiment of the utility model drives the clamping member to slide upward or downward relative to the storage tube by rotating the rotating ring. When the clamping member slides downward, different clamping members gradually move closer together, the telescopic gap between adjacent clamping members gradually decreases, and the accommodation space formed by the slots between different clamping members gradually decreases, forming a clamping effect on the blood collection needle, assisting medical staff to separate and remove the needle. Compared with the method of manually removing the needle, medical staff do not have to directly touch the needle with their hands, avoiding the risk of patient blood infecting medical staff and sharp needles stabbing medical staff, thereby improving safety.

[0035] Optionally, refer to Figures 1 to 3 The needle removal device further includes a pressing rod 5; the pressing rod 5 is at least partially slidably connected to the slot 301, and the pressing rod 5 is at least partially located in the accommodating space.

[0036] Specifically, if Figures 1 to 3 As shown, along the axial Z direction of the storage tube 1, the lower part of the pressing rod 5 is slidably connected to the slot 301, and the medical staff can slide the pressing rod 5 up and down by pressing or pulling the upper end of the pressing rod 5. In some embodiments, when the rotating ring 2 is rotated counterclockwise, different clamping members 3 gradually move closer, driving different pressing rods 5 to gradually move closer, until the pressing rods 5 cooperate to clamp the blood collection needle, and the lower end of the pressing rod 5 abuts against the connecting flap at the needle-tube connection of the blood collection needle. When the medical staff draws the blood collection needle upward along the positive Z direction, the needle is separated from the syringe due to the clamping effect. By pressing the pressing rod 5, the medical staff pushes the needle downward to the storage tube 1 for unified collection and treatment.

[0037] Optionally, refer to Figures 1 to 3 The pressing rod 5 is provided with a protrusion 51 toward the central axis of the storage tube 1 , and the protrusions 51 of the pressing rods 5 are used to cooperate in clamping and removing the needles; the protrusion 51 is located at one end of the pressing rod 5 close to the bottom of the storage tube 1 .

[0038] Specifically, if Figures 1 to 3 As shown, the pressing rod 5 is provided with a protrusion 51, also known as a bite tooth, at the inner side of the clamping assembly facing the central axis of the storage tube 1, that is, the pressing rod 5 is located, and the protrusion 51 is located at the lower end of the pressing rod 5. The surface of the protrusion 51 in contact with the needle can be rectangular or sawtooth-shaped, and needs to be designed to be consistent with the shape of the connecting flap at the connection between the needle and the needle tube. In some embodiments, when the rotating ring 2 is rotated in the reverse direction, different clamping members 3 gradually move closer, driving the protrusions 51 on different pressing rods 5 to gradually move closer, until the protrusions 51 form a clamping bite for the blood collection needle, and the medical staff only needs to pull the blood collection needle upward to complete the separation between the needle and the syringe.

[0039] Optionally, refer to Figures 1 to 3 The clamping member 3 includes a supporting piece 31 and a clamping piece 32; the supporting piece 31 is slidably connected to the storage tube 1, and the supporting piece 31 is threadedly connected to the rotating ring 2, the clamping piece 32 is obliquely connected to the supporting piece 31, and the clamping piece 32 is provided with the slot 301 away from the supporting piece 31.

[0040] Specifically, if Figures 1 to 3As shown, the clamping member 3 includes a support sheet 31 and a clamping sheet 32, and the support sheet 31 and the clamping sheet 32 ​​are connected obliquely, that is, the support sheet 31 and the clamping sheet 32 ​​can form an angle of 70°, 80° or 90°. In this embodiment, the support sheet 31 and the clamping sheet 32 ​​are vertically connected, so that the clamping member 3 forms an L-shaped structure, wherein the outer surface of the support sheet 31 is in an arc shape, the lower part of the outer surface of the support sheet 31 is slidably connected to the inner wall of the storage tube 1, the upper part of the outer surface of the support sheet 31 is threadedly connected to the rotating ring 2, and the clamping sheet 32 ​​is provided with a slot 301 away from the support sheet 31, and the slot 301 of each clamping sheet 32 ​​is surrounded to form a space for accommodating. Therefore, the support sheet 31 and the clamping sheet 32 ​​structure connected obliquely can reduce the space occupied by the clamping member 3 inside the storage tube 1 and improve the utilization rate.

[0041] Optionally, refer to Figures 1 to 3 The needle removal device also includes sterilizing cotton 6; the sterilizing cotton 6 is located in the storage tube 1.

[0042] Specifically, if Figures 1 to 3 As shown, a disinfectant cotton 6 is arranged at the bottom 101 of the storage tube 1, and the disinfectant cotton 6 includes but is not limited to alcohol cotton or isopropyl alcohol cotton, chlorhexidine cotton, iodine cotton or hydrogen peroxide cotton. When the medical staff inserts the blood collection needle and the needle tip into the storage tube 1 through the slot 301 and pierces the disinfectant cotton 6, the blood collection needle, especially the needle tip, can be disinfected to reduce the contamination caused by the needle tip after use.

[0043] Optionally, refer to Figures 1 to 3 The needle removal device further comprises a sealing film 7 ; the sealing film 7 is connected to the storage tube 1 and is located between the sterilizing cotton 6 and the opening 102 , and the sealing film 7 seals and covers the sterilizing cotton 6 .

[0044] Specifically, if Figures 1 to 3 As shown, the sealing film 7 is sealed and connected to the inner wall of the storage tube 1 to cover the sealing disinfection cotton 6 to prevent the disinfection liquid such as alcohol from volatilizing from the opening 102. The sealing film 7 is relatively thin, which is convenient for the blood collection needle to pierce. The sealing film 7 includes but is not limited to polypropylene film, polyethylene film, polyvinyl chloride film or polyethylene terephthalate film.

[0045] In some embodiments, the medical staff uses the following steps to complete the needle removal:

[0046] Step 1: Insert the blood collection needle together with the needle tip through the slot 301 into the storage tube 1 and pierce into the sterile cotton 6, and sterilize the needle tip.

[0047] Step 2: rotate the rotating ring 2 counterclockwise, and the clamping parts slide downward along the negative Z direction, and the different clamping parts 3 gradually move closer to each other, driving the different pressing rods 5 to gradually move closer to each other, until the protrusions 51 on the pressing rods 5 form a clamping bite effect on the needle.

[0048] Step 3: Pull the syringe of the blood collection needle upward along the positive Z direction to separate the syringe from the needle.

[0049] Step 4: Press the pressing rod 5 to make the needle held by the protrusion 51 sink and further penetrate into the sterile cotton 6.

[0050] Optionally, refer to Figures 1 to 3 , parallel to the cross-sectional direction of the storage tube 1, the surface of the clamping piece 32 is fan-shaped; the number of the clamping members 3 is eight, parallel to the cross-sectional direction of the storage tube 1, the surface of each clamping piece 32 is fan-shaped with a central angle of 45°.

[0051] Specifically, if Figures 1 to 3 As shown, parallel to the cross-sectional direction of the storage tube 1, the surface of the clamping piece 32 is fan-shaped, and multiple clamping pieces 32 are arranged to form a circular clamping assembly. The number of clamping members 3 is determined according to the number of connecting flaps of the blood collection needle. In this embodiment, eight clamping members 3 are arranged, and the surface of the clamping piece 32 of each clamping member 3 is fan-shaped with a central angle of 45°, and the fan-shaped radius of each clamping piece 32 is equal. At the same time, eight pressing rods 5 are correspondingly arranged, and the shape of the protrusion 51 is consistent with the shape of the connecting flap of the blood collection needle to ensure the effectiveness of clamping the needle.

[0052] Optionally, refer to Figures 1 to 3 The outer side of the rotating ring 2 is provided with an anti-slip groove.

[0053] Specifically, if Figures 1 to 3 As shown, an anti-skid groove is provided on the outer side of the rotating ring 2 to increase friction, making it easier for medical staff to rotate the rotating ring 2 and improving operating efficiency.

[0054] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. A needle removal device, characterized in that: It includes a storage cylinder, a rotating ring and a plurality of clamping parts; One end of the storage tube has an opening, and along the axial direction of the storage tube and away from the opening, the inner diameter of at least a part of the storage tube gradually decreases; The clamping member extends from the opening into the storage tube, and the clamping member is slidably connected with the storage tube along the axial direction of the storage tube. A plurality of the clamping members are arranged at intervals along the circumference of the storage tube, and a plurality of the clamping members are provided with slots toward the central axis of the storage tube, and the slots of the plurality of the clamping members are arranged to form a receiving space for clamping and removing needles; The rotating ring is rotatably connected to the opening, and a spiral internal thread is circumferentially arranged on the inner side of the rotating ring. The inner side of the rotating ring is threadably connected to the outer side of the clamping member away from the slot.

2. The needle removal device according to claim 1, characterized in that: The needle removal device also includes a pressing rod; The pressing rod is at least partially slidably connected to the slot, and at least partially located in the accommodating space.

3. The needle removal device according to claim 2, characterized in that: The pressing rod is provided with a protrusion toward the central axis of the storage tube, and the protrusions of the pressing rods are used to cooperate in clamping and removing the needles.

4. The needle removal device according to claim 1, characterized in that: The clamping member comprises a supporting sheet and a clamping sheet; The support sheet is slidably connected to the storage tube, and the support sheet is threadedly connected to the rotating ring. The clamping sheet is obliquely connected to the support sheet, and the clamping sheet is provided with the slot away from the support sheet.

5. The needle removal device according to claim 1, characterized in that: The needle removal device also includes sterile cotton; The disinfecting cotton is located in the storage cylinder.

6. The needle removal device according to claim 5, characterized in that: The needle removal device also includes a sealing membrane; The sealing film is connected to the storage tube and is located between the sterile cotton and the opening. The sealing film seals and covers the sterile cotton.

7. The needle removal device according to claim 3, characterized in that: The protrusion is located at one end of the pressing rod close to the bottom of the storage tube.

8. The needle removal device according to claim 4, characterized in that: Parallel to the cross-sectional direction of the storage tube, the surface of the clamping piece is fan-shaped.

9. The needle removal device according to claim 8, characterized in that: The number of the clamping pieces is eight, which are parallel to the cross-sectional direction of the storage tube, and the surface of each clamping piece is in the shape of a sector with a central angle of 45°.

10. The needle removal device according to claim 1, characterized in that: An anti-slip groove is arranged on the outer side of the rotating ring.

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