Injection needle

Abstract

The utility model relates to the technical field of medical instruments, in particular to an injection needle. Comprising a connector, a needle tube, a protective sleeve and a sealing mechanism, the sealing mechanism comprises an installation ring, a plurality of elastic pieces and a sealing piece, in the process that the needle tip is moved away from the skin surface of a patient, when the needle tip slides into a sliding way, the needle tip retracts from the center of the sealing piece composed of a plurality of sealing blocks, and after the needle tip retracts to the end, close to the connector, of the sealing piece, the needle tip is sealed. Under the action of restoring force of the elastic piece, the multiple sealing blocks form a sealing piece, and the end of the protective sleeve is sealed through the sealing piece, so that in the process that a recycling person recycles the injection needle, when the protective sleeve is pressed by misoperation, the needle point is shielded through the sealing piece, and therefore the needle point in the protective sleeve is prevented from puncturing the recycling person; and occupational exposure occurs.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an injection needle. Background Art

[0002] In the process of removing the needle from the patient's skin surface, the operator may be pricked by the needle due to collision with other people, the operator's own carelessness or collision with the patient, thus causing the risk of occupational exposure.

[0003] To solve the above problems, the prior art patent publication number (CN209884940U) discloses a syringe needle, including a connector and a needle tube, one end of the connector is provided with a slot for the syringe plug to be plugged in, and the other end of the connector is provided with a slideway, which is connected to the slot; the needle tube is plugged into the slideway, the needle tip of the needle tube is exposed outside the slideway, and the needle tip is located at the end of the slideway away from the slot; the outer wall of the needle tube is sealed and slidably connected to the inner wall of the slideway; a protective sleeve is fixedly connected to the end of the connector away from the slot, and the needle tip can extend or retract into the protective sleeve after the needle tube slides along the slideway; a slide groove is provided on the connector, and the slide groove is connected to the slideway; a sliding key is connected to the outer wall of the needle tube, and the sliding key is slidably connected to the slide groove, and the direction of relative sliding between the sliding key and the slide groove is parallel to the direction of relative sliding of the needle tube. After the needle is pulled out of the patient's body, it automatically retracts into the protective sleeve, and the protective sleeve isolates the needle tip from the outside world to avoid the needle tip from stabbing the operator or other personnel, and to avoid the occurrence of occupational exposure and accidental injury to others.

[0004] In order to avoid injuring patients, the protective cover on the existing syringe needle is made of flexible material. However, when the syringe needle is recovered, the recovery personnel may press on the protective cover, causing the protective cover to deform, thereby causing the needle tip in the protective cover to injure the recovery personnel, resulting in occupational exposure. Utility Model Content

[0005] The utility model aims to provide an injection needle, aiming to solve the technical problem that when recycling the syringe needle, the recycling personnel may press on the protective cover, causing the protective cover to deform, thereby causing the needle tip in the protective cover to pierce the recycling personnel and cause occupational exposure.

[0006] To achieve the above-mentioned purpose, the utility model provides an injection needle, including a connector, a needle tube, a protective sleeve and a sealing mechanism, wherein a slot is provided at one end of the connector, a slideway is provided at the other end of the connector, the slideway is communicated with the slot, the needle tube is plugged into the slideway, the needle tip of the needle tube is located outside the end of the slideway away from the slot, the protective sleeve is provided at the end of the connector away from the slot, the needle tube is slidably connected with the protective sleeve and is located inside the protective sleeve, a slideway is further provided on the connector, the slideway is communicated with the slideway, a sliding key is provided on the outer wall of the needle tube, the sliding key is slidably connected with the slideway, and the direction in which the sliding key slides relative to the slideway is parallel to the direction in which the needle tube slides relative to the slideway;

[0007] The sealing mechanism includes a mounting ring, a plurality of elastic parts and a sealing part. The mounting ring is mounted on the inner wall of the protective sleeve and is located at the end of the protective sleeve away from the connector. The sealing part is composed of a plurality of sealing blocks. The elastic part is arranged between each sealing block and the mounting ring. An inclined surface is arranged at the end of each sealing block away from the elastic part, and each inclined surface is located on the side of the sealing block close to the needle tip.

[0008] Wherein, each of the elastic members includes a first spring, a first arc block and a second arc block, the first arc block is arranged at one end of the first spring, the second arc block is arranged at the other end of the first spring, the first arc block is fixedly connected to the mounting ring, and the second arc block is fixedly connected to the sealing block.

[0009] The outer side wall of the mounting ring is provided with a first clamping hole, the protective sleeve is provided with a second clamping hole, the second clamping hole corresponds to the first clamping hole, and a fixed shaft is clamped inside the second clamping hole and the first clamping hole.

[0010] There are at least two first clamping holes and at least two second clamping holes, and each first clamping hole corresponds to one second clamping hole.

[0011] Among them, the injection needle also includes a reset member, the inner side wall of the connecting head is also provided with an installation cavity, the reset member is provided inside the installation cavity, one end of the reset member is fixedly connected to the outer side wall of the needle tube, and the other end of the reset member is fixedly connected to the inner wall of the installation cavity.

[0012] Wherein, the reset member includes a second spring, a first mounting ring and a second mounting ring, the first mounting ring is provided at one end of the second spring, the second mounting ring is provided at the other end of the second spring, the first mounting ring is fixedly connected to the outer wall of the needle tube, and the second mounting ring is fixedly connected to the interior of the mounting cavity.

[0013] The utility model provides an injection needle. In the process of removing the needle tip from the patient's skin surface, when the needle tip slides into the slideway, the needle tip is retracted from the center of the sealing member formed by a plurality of sealing blocks. When the needle tip is retracted to one end of the sealing member close to the connector, under the action of the restoring force of the elastic member, a plurality of sealing blocks form the sealing member, and the end of the protective cover is sealed by the sealing member. When a recycling personnel is recycling the injection needle, if the protective cover is pressed by mistake, the needle tip is shielded by the sealing member, thereby preventing the recycling personnel from being stabbed by the needle tip in the protective cover and causing occupational exposure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a cross-sectional view of the internal structure of the injection needle of the first embodiment of the utility model.

[0016] Figure 2 The utility model provides Figure 1 A magnified view of the local structure at A.

[0017] Figure 3 It is a structural schematic diagram of the sealing mechanism in the first embodiment of the utility model.

[0018] Figure 4 It is a cross-sectional view of the internal structure of the connector of the second embodiment of the present utility model.

[0019] Figure 5 It is a structural schematic diagram of a reset member in the second embodiment of the utility model.

[0020] 101-connector, 102-needle tube, 103-protective sleeve, 104-mounting ring, 105-elastic member, 106-sealing member, 107-first spring, 108-first arc block, 109-second arc block, 110-slot, 111-slideway, 112-slide groove, 113-slide key, 114-sealing block, 115-inclined surface, 116-first clamping hole, 117-second clamping hole, 118-fixed shaft, 201-reset member, 202-second spring, 203-first mounting ring, 204-second mounting ring, 205-mounting cavity. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] First embodiment:

[0023] See also Figures 1 to 3 ,in Figure 1 is a cross-sectional view of the internal structure of the injection needle of the first embodiment, Figure 2 yes Figure 1 The enlarged view of the local structure at A. Figure 3 It is a schematic structural diagram of the sealing mechanism in the first embodiment.

[0024] The utility model provides an injection needle: including a connector 101, a needle tube 102, a protective cover 103 and a sealing mechanism, wherein the sealing mechanism includes a mounting ring 104, a plurality of elastic members 105 and a sealing member 106, and each of the elastic members 105 includes a first spring 107, a first arc block 108 and a second arc block 109. The above-mentioned solution solves the problem that when the syringe needle is recovered, the recovery personnel may press on the protective cover 103, causing the protective cover 103 to deform, thereby causing the needle tip in the protective cover 103 to stab the recovery personnel and cause occupational exposure. It can be understood that the above-mentioned solution can be used on syringes for medical cosmetology, and can also be used on syringes for infectious diseases.

[0025] According to this specific embodiment, a slot 110 is provided at one end of the connector 101, and a slide 111 is provided at the other end of the connector 101, the slide 111 is communicated with the slot 110, the needle tube 102 is plugged into the slide 111, the needle tip of the needle tube 102 is located outside the end of the slide 111 away from the slot 110, the protective cover 103 is provided at the end of the connector 101 away from the slot 110, the needle tube 102 is slidably connected with the protective cover 103 and is located inside the protective cover 103, the connector 101 is also provided with a slide groove 112, the slide groove 112 is communicated with the slide 111, a slide key 113 is provided on the outer wall of the needle tube 102, and the slide key 113 is provided on the outer wall of the needle tube 102. 13 is slidably connected to the slide groove 112, and the direction in which the slide key 113 slides relative to the slide groove 112 is parallel to the direction in which the needle tube 102 slides relative to the slideway 111. When in use, the slide key 113 is first used to push the needle tube 102 to slide along the slideway 111 until the needle tip extends out of the protective sleeve 103, and the needle tip is inserted into the patient's body for injection. After the injection is completed, the slide key 113 is used to push the needle tube 102 to slide along the slideway 111 until the needle tip is retracted into the protective sleeve 103. In the process of removing the needle tip from the patient's skin surface, the needle tip is located inside the protective sleeve 103, which can prevent the needle tip from colliding with the patient, avoiding the patient from being stabbed by the needle tip, and at the same time avoiding the operator or other doctors or family members from being stabbed by the needle tip, thereby preventing occupational exposure.

[0026] The mounting ring 104 is mounted on the inner wall of the protective sleeve 103 and is located at the end of the protective sleeve 103 away from the connector 101. The sealing member 106 is composed of a plurality of sealing blocks 114. The elastic member 105 is arranged between each sealing block 114 and the mounting ring 104. The end of each sealing block 114 away from the elastic member 105 is provided with an inclined surface 115. Each inclined surface 115 is located on the side of the sealing block 114 close to the needle tip. When the needle tip is removed from the patient's skin surface, when the needle tip slides into the slideway 111, the needle tip moves away from the patient's skin surface. The sealing member 106 composed of a plurality of sealing blocks 114 is retracted at the center. When the needle tip is retracted to one end of the sealing member close to the connector 101, under the action of the restoring force of the elastic member 105, a plurality of sealing blocks 114 constitute the sealing member 106. The end of the protective cover 103 is sealed by the sealing member 106, so that when the recycling personnel are recycling the injection needle, if the protective cover 103 is pressed by mistake, the needle tip is shielded by the sealing member, thereby preventing the recycling personnel from being stabbed by the needle tip in the protective cover 103 and causing occupational exposure.

[0027] Secondly, the first arc block 108 is provided at one end of the first spring 107, and the second arc block 109 is provided at the other end of the first spring 107. The first arc block 108 is fixedly connected to the mounting ring 104, and the second arc block 109 is fixedly connected to the sealing block 114. The first arc block 108 is fixed on the mounting ring 104, and the second arc block 109 is fixed on the sealing block 114, thereby completing the installation of the spring component.

[0028] At the same time, the outer wall of the mounting ring 104 is provided with a first clamping hole 116, and the protective cover 103 is provided with a second clamping hole 117, the second clamping hole 117 corresponds to the first clamping hole 116, and the interior of the second clamping hole 117 and the first clamping hole 116 are clamped with a fixing shaft 118. After the mounting ring 104 is placed inside the protective cover 103 so that the first clamping hole 116 and the second clamping hole 117 correspond to each other, the fixing shaft 118 is inserted into the first clamping hole 116 and the second clamping hole 117, thereby completing the installation of the mounting ring 104.

[0029] In addition, the number of the first card hole 116 and the second card hole 117 are both at least two, and each of the first card hole 116 corresponds to one of the second card holes 117. Since the number of the first card hole 116 and the second card hole 117 is at least two, the mounting ring 104 is more firmly mounted inside the protective cover 103.

[0030] When using an injection needle of the present embodiment, the needle tube 102 is first pushed by the slide key 113 to slide along the slideway 111 until the needle tip extends out of the protective sleeve 103, and the needle tip is inserted into the patient's body for injection. After the injection is completed, the needle tube 102 is pushed by the slide key 113 to slide along the slideway 111 until the needle tip retracts into the protective sleeve 103. In the process of removing the needle tip from the patient's skin surface, the needle tip is located inside the protective sleeve 103, which can prevent the needle tip from colliding with the patient, avoiding the needle tip from injuring the patient, and at the same time avoiding the needle tip from injuring the operator or other doctors or family members, preventing occupational exposure, and in the process of removing the needle tip from the patient's skin surface When the needle tip slides into the slideway 111, the needle tip is retracted from the center of the sealing member 106 formed by the multiple sealing blocks 114. When the needle tip is retracted to the end of the sealing member close to the connector 101, under the action of the restoring force of the elastic member 105, the multiple sealing blocks 114 form the sealing member 106, and the end of the protective cover 103 is sealed by the sealing member 106, so that when the recycling personnel are recycling the injection needle, when the protective cover 103 is pressed by mistake, the needle tip is shielded by the sealing member, thereby preventing the recycling personnel from being stabbed by the needle tip in the protective cover 103 and causing occupational exposure.

[0031] Second embodiment:

[0032] Based on the first embodiment, please refer to Figure 4 and Figure 5 , Figure 4 This is a cross-sectional view of the internal structure of the connector of the second embodiment. Figure 5 Schematic diagram of the structure of the reset member in the second embodiment.

[0033] The utility model provides an injection needle which further comprises a reset member 201 . The reset member 201 comprises a second spring 202 , a first mounting ring 203 and a second mounting ring 204 .

[0034] According to this specific embodiment, the inner wall of the connector 101 is also provided with an installation cavity 205, and the interior of the installation cavity 205 is provided with the reset member 201, one end of the reset member 201 is fixedly connected to the outer wall of the needle tube 102, and the other end of the reset member 201 is fixedly connected to the inner wall of the installation cavity 205. By arranging the reset member 201 inside the installation cavity 205, after the injection is completed, the sliding key 113 is released by hand, and the needle tube 102 automatically slides along the slide 111 under the action of the reset member 201 until the needle tip is retracted into the protective cover 103.

[0035] Among them, one end of the second spring 202 is provided with the first mounting ring 203, and the other end of the second spring 202 is provided with the second mounting ring 204, the first mounting ring 203 is fixedly connected to the outer wall of the needle tube 102, and the second mounting ring 204 is fixedly connected to the inside of the mounting cavity 205. The first mounting ring 203 is fixed to the outer wall of the needle tube 102, and the second mounting ring 204 is fixed to the inside of the mounting cavity 205, so as to complete the installation of the reset member 201. Since the second spring 202 is provided on the reset member 201, the needle tube 102 is automatically reset by the elastic force of the second spring 202.

[0036] When using an injection needle of the present embodiment, the first mounting ring 203 is fixed to the outer wall of the needle tube 102, and the second mounting ring 204 is fixed inside the mounting cavity 205, thereby completing the installation of the reset member 201. Since the reset member 201 is provided with the second spring 202, the needle tube 102 is automatically reset by the elastic force of the second spring 202, so that after the injection is completed, the sliding key 113 is released by hand, and the needle tube 102 automatically slides along the slide 111 under the action of the restoring force of the second spring 202 until the needle tip is retracted into the protective cover 103.

[0037] What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. An injection needle, comprising a connector, a needle tube and a protective sleeve, wherein a slot is provided at one end of the connector, a slideway is provided at the other end of the connector, the slideway is communicated with the slot, the needle tube is plugged into the slideway, the needle tip of the needle tube is located outside the end of the slideway away from the slot, the protective sleeve is provided at the end of the connector away from the slot, the needle tube is slidably connected with the protective sleeve and is located inside the protective sleeve, a slide groove is further provided on the connector, the slide groove is communicated with the slideway, a sliding key is provided on the outer wall of the needle tube, the sliding key is slidably connected with the slide groove, the direction in which the sliding key slides relative to the slide groove is parallel to the direction in which the needle tube slides relative to the slideway, and the invention is characterized in that It also includes closed mechanisms; The sealing mechanism includes a mounting ring, a plurality of elastic parts and a sealing part. The mounting ring is mounted on the inner wall of the protective sleeve and is located at the end of the protective sleeve away from the connector. The sealing part is composed of a plurality of sealing blocks. The elastic part is arranged between each sealing block and the mounting ring. An inclined surface is arranged at the end of each sealing block away from the elastic part, and each inclined surface is located on the side of the sealing block close to the needle tip.

2. The injection needle according to claim 1, characterized in that Each of the elastic members includes a first spring, a first arc block and a second arc block, wherein the first arc block is disposed at one end of the first spring and the second arc block is disposed at the other end of the first spring, the first arc block is fixedly connected to the mounting ring, and the second arc block is fixedly connected to the sealing block.

3. The injection needle according to claim 1, characterized in that: The outer side wall of the mounting ring is provided with a first clamping hole, the protective sleeve is provided with a second clamping hole, the second clamping hole corresponds to the first clamping hole, and a fixed shaft is clamped inside the second clamping hole and the first clamping hole.

4. The injection needle according to claim 3, characterized in that: The number of the first clamping holes and the number of the second clamping holes are both at least two, and each of the first clamping holes corresponds to one of the second clamping holes.

5. The injection needle according to claim 1, characterized in that: The injection needle also includes a reset member, the inner side wall of the connector is also provided with an installation cavity, the reset member is provided inside the installation cavity, one end of the reset member is fixedly connected to the outer side wall of the needle tube, and the other end of the reset member is fixedly connected to the inner wall of the installation cavity.

6. The injection needle according to claim 5, characterized in that The reset member includes a second spring, a first mounting ring and a second mounting ring, the first mounting ring is provided at one end of the second spring, the second mounting ring is provided at the other end of the second spring, the first mounting ring is fixedly connected to the outer wall of the needle tube, and the second mounting ring is fixedly connected to the interior of the mounting cavity.

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