Safety self-destructing syringe
By designing a safe self-destructing syringe and utilizing the matching mechanism of the inner rod and the clamping block, the problem of harm caused by the existing syringe during the self-destructing process is solved, the structure is simplified, the production cost and difficulty are reduced, and higher safety is achieved. and reliability.
Patent Information
- Application Number
- CN201710875774.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2017-09-25
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2037-09-25
AI Technical Summary
Existing self-destructive syringes are prone to harm to nursing staff when completing the self-destructive process, and have complex structures and high parts accuracy, resulting in high production difficulty and high cost.
A safe self-destructing syringe is designed. Through the cooperation of the first inner rod and the second inner rod, and the cooperation of the blocking block and the blocking device, the movement and rotation of the inner rod are restricted, so that the syringe can be completely dropped after use. It is inside the syringe and cannot be reused.
It effectively protects the safety of caregivers and patients, simplifies the operation process, reduces production difficulty and cost, and improves product safety and reliability.
Smart Images
Figure CN109550122B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a safe self-destructive syringe. Background Art
[0002] At present, the injection and flushing devices used in medical and industrial use are all ordinary syringes or flushers, and self-destructive syringes or flushers. Self-destructive syringes or flushers are self-destructive or no longer reusable after the core rod is pulled out and broken or locked. This operation increases the burden on nursing staff, who need to operate with force to complete it and need to be careful of needle sticks during the process. The change in the injection force caused by related parts will also cause some discomfort to the patient. In addition, the structure of this self-destructive syringe or flusher is more complicated than usual, the parts require higher precision, and the product defect rate is very high, so it brings certain difficulties to production and increases costs. Summary of the invention
[0003] The technical problem to be solved by the present invention is to overcome the defect of the prior art that the self-destructing syringe easily causes harm to the nursing staff when completing the self-destruction process, and to provide a safe self-destructing syringe with a simple structure.
[0004] The present invention solves the above technical problems through the following technical solutions:
[0005] A safety self-destructing syringe, comprising a syringe, is characterized in that the safety self-destructing syringe also comprises:
[0006] A first inner rod and a second inner rod, wherein the first inner rod and the second inner rod are movably sleeved in the syringe from outside to inside in sequence;
[0007] A card block, the card block is located in the syringe;
[0008] A first locking device;
[0009] A second locking device;
[0010] The clamping block is used to be clamped on the first clamping device or the second clamping device, and the clamping block cooperates with the first clamping device to limit the relative movement of the first inner rod and the second inner rod along the axial direction;
[0011] The blocking block cooperates with the second blocking device to limit the relative movement of the first inner rod and the second inner rod along the axial direction.
[0012] Preferably, the clamping block is arranged on the outer wall surface of the second inner rod, the first clamping device is a first clamping groove, and the first clamping groove is arranged at the tail end of the first inner rod; the second clamping device is an opening, and the opening is arranged in the middle of the first inner rod;
[0013] The clamping block is used to be clamped in the first clamping slot or the opening, and the clamping block cooperates with the first clamping slot to limit the relative movement of the first inner rod and the second inner rod along the axial direction;
[0014] The block cooperates with the opening to limit the axial movement of the first inner rod and the second inner rod away from each other.
[0015] Preferably, the safety self-destructive syringe further comprises a first limiting mechanism, and the first limiting mechanism is used to limit the axial movement of the second inner rod relative to the first inner rod.
[0016] Preferably, the first limiting mechanism includes a guide rail and a guide groove, the guide rail is provided on the first inner rod, the guide groove is provided on the head end of the second inner rod, and the guide rail and the guide groove cooperate to limit the axial movement of the second inner rod relative to the first inner rod.
[0017] Preferably, the safety self-destructive syringe further comprises a second limiting mechanism, and the second limiting mechanism is used to limit the first inner rod from rotating axially relative to the syringe.
[0018] Preferably, the second limiting mechanism includes a first limiting protrusion and a limiting groove, the first limiting protrusion is arranged on the outer wall of the first inner rod, the limiting groove is arranged on the limiting ring of the syringe, the first limiting protrusion is slidably arranged in the limiting groove, and the first limiting protrusion and the limiting groove cooperate to limit the axial rotation of the first inner rod relative to the syringe.
[0019] Preferably, the head end of the second inner rod is further provided with a second limiting protrusion, which is clamped on a side surface of the opening close to the tail end of the syringe, and the second limiting protrusion cooperates with the opening to limit the axial movement of the first inner rod and the second inner rod away from each other.
[0020] Preferably, the safety self-destructive syringe also includes a positioning groove, which is arranged on the inner wall of the tail end of the first inner rod, the center line of the positioning groove is parallel to the length direction of the first inner rod, and the positioning groove is used to limit the axial rotation of the block.
[0021] Preferably, the positioning groove is located between the tail end of the first inner rod and the opening, and the depth of the positioning groove decreases from the tail end to the head end of the first inner rod.
[0022] Preferably, the clamping block is arranged on the inner wall surface of the first inner rod, the first clamping device is a second clamping slot, and the second clamping slot is arranged on the second inner rod; the second clamping device is a third clamping slot, and the third clamping slot is arranged between the tail end of the second inner rod and the second clamping slot;
[0023] The clamping block is used to be clamped in the second clamping slot or the third clamping slot, and the clamping block cooperates with the second clamping slot to limit the relative movement of the first inner rod and the second inner rod along the axial direction;
[0024] The clamping block cooperates with the third clamping groove to limit the relative movement of the first inner rod and the second inner rod along the axial direction.
[0025] Preferably, the first inner rod is made of a ductile material.
[0026] The positive and progressive effects of the present invention are:
[0027] The present invention limits the relative movement and the opposite movement of the first inner rod and the second inner rod by the cooperation between the blocking block and the first blocking device and the cooperation between the blocking block and the second blocking device, so that after the use of the safety self-destructing syringe, the first inner rod and the second inner rod all fall into the syringe and cannot be pulled out for reuse; at the same time, since the needle part of the safety self-destructing syringe is always in the direction and state when in use during the entire operation process, the personal safety of oneself and other people is effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a schematic diagram of the initial state of the safety self-destructive syringe of Example 1 of the present invention.
[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the initial state of the second inner rod and the limiting ring of Example 1 of the present invention.
[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the first inner rod of Example 1 of the present invention.
[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the initial state of the first inner rod, the second inner rod and the limiting ring of Example 1 of the present invention.
[0032] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the AA direction.
[0033] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure along the BB direction.
[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the terminal state of the first inner rod, the second inner rod and the limiting ring of Example 1 of the present invention.
[0035] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure in the CC direction.
[0036] Fig. 9 for Figure 7 Schematic diagram of the cross-sectional structure in the DD direction.
[0037] Fig.10 It is a three-dimensional structural schematic diagram of the end state of the safety self-destructive syringe of Example 1 of the present invention.
[0038] Fig.11 for Fig.10 Schematic diagram of the cross-sectional structure along the EE direction.
[0039] Fig.12 for Fig.10 Schematic diagram of the cross-sectional structure in the FF direction.
[0040] Fig.13 It is a schematic diagram of the three-dimensional structure of the initial state of the second inner rod and the limiting ring of Example 2 of the present invention.
[0041] Fig.14 It is a schematic diagram of the three-dimensional structure of the first inner rod of Example 2 of the present invention.
[0042] Fig.15 It is a schematic diagram of the three-dimensional structure of another position of the first inner rod of Example 2 of the present invention.
[0043] Fig.16 It is a schematic structural diagram of the initial states of the first inner rod, the second inner rod and the limiting ring according to the second embodiment of the present invention.
[0044] Fig.17 for Fig.16 Schematic diagram of the cross-sectional structure along the GG direction.
[0045] Fig.18 It is a structural schematic diagram of the terminal state of the first inner rod, the second inner rod and the limit ring in Example 1 of the present invention.
[0046] Fig.19 for Fig.18 Schematic diagram of the cross-sectional structure along the HH direction.
[0047] Description of Reference Numerals
[0048] Syringe 1
[0049] First inner rod 2
[0050] Card slot 21
[0051] Opening 22
[0052] Guide rail 23
[0053] The first limiting protrusion 24
[0054] Positioning slot 25
[0055] Second inner rod 3
[0056] Guide groove 32
[0057] The second limiting protrusion 33
[0058] Second card slot 36
[0059] The third card slot 37
[0060] Limiting ring 4
[0061] Limiting slot 41
[0062] Block 5 DETAILED DESCRIPTION
[0063] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.
[0064] Example 1
[0065] Please combine Figure 1-Figure 12 It is understood that the present embodiment provides a safety self-destructive syringe, which includes: a syringe 1, a first inner rod 2, a second inner rod 3, a clamping block 5, a first clamping device and a second clamping device.
[0066] The first inner rod 2 and the second inner rod 3 are movably sleeved in the syringe 1 from outside to inside. The first inner rod 2 is made of a ductile material.
[0067] The block 5 is arranged on the outer wall surface of the second inner rod 3 .
[0068] The first clamping device is provided at the tail end of the first inner rod 2; the second clamping device is provided at the middle of the first inner rod 2; the clamping block 5 is used to be clamped in the first clamping device or the second clamping device. The clamping block 5 cooperates with the first clamping device to limit the relative movement of the first inner rod 2 and the second inner rod 3 along the axial direction. The clamping block 5 cooperates with the second clamping device to limit the opposite movement of the first inner rod 2 and the second inner rod 3 along the axial direction. Specifically, in the initial state of the safety self-destruction type syringe, the clamping block 5 is clamped in the first clamping device; in the terminal state of the safety self-destruction type syringe, the clamping block 5 is clamped in the second clamping device.
[0069] In this embodiment, the first locking device is a locking groove 21, which is provided at the rear end of the first inner rod 2; the second locking device is an opening 22, which is provided at the middle of the first inner rod 2. The locking block 5 is used to be locked in the locking groove 21 or the opening 22, and the locking block 5 cooperates with the locking groove 21 to limit the relative movement of the first inner rod 2 and the second inner rod 3 along the axial direction. The locking block 5 cooperates with the opening 22 to limit the opposite movement of the first inner rod 2 and the second inner rod 3 along the axial direction.
[0070] The safety self-destructive syringe further comprises a first limiting mechanism and a second limiting mechanism.
[0071] The first limiting mechanism is used to limit the axial movement of the second inner rod 3 relative to the first inner rod 2. In this embodiment, the first limiting mechanism includes a guide rail 23 and a guide groove 32. The guide rail 23 is provided on the first inner rod 2, and the guide groove 32 is provided at the head end of the second inner rod 3. The guide rail 23 and the guide groove 32 cooperate to limit the axial movement of the second inner rod 3 relative to the first inner rod 2. In the initial state of the safety self-destructive syringe, the plane where the guide rail 23 is located forms an angle with the center line of the guide groove 32, and the guide rail 23 limits the second inner rod 3 from moving in the first inner rod 2 toward the head end of the syringe 1; after the second inner rod 3 rotates axially by the angle, the guide rail 23 enters the guide groove 32 and is slidably disposed in the guide groove 32. In this embodiment, the angle is 90 degrees. In other embodiments, the angle can also be other values.
[0072] The safety self-destructive syringe further includes a second limiting mechanism, which is used to limit the first inner rod 2 from rotating axially relative to the syringe 1. In this embodiment, the second limiting mechanism includes a first limiting protrusion 24 and a limiting groove 41, the first limiting protrusion 24 is provided on the outer wall of the first inner rod 2, the limiting groove 41 is provided on the limiting ring 4 of the syringe 1, the first limiting protrusion 24 is slidably provided on the limiting groove 41, and the first limiting protrusion 24 and the limiting groove 41 cooperate to limit the first inner rod 2 from rotating axially relative to the syringe 1. The limiting ring 4 is used to fix the first inner rod 2, and the limiting groove 41 on the limiting ring 4 and the first limiting protrusion 24 on the first inner rod 2 cooperate with each other to limit the first inner rod 2 to move forward and backward axially relative to the syringe 1 only through the first limiting protrusion 24, but not to rotate axially.
[0073] A second limiting protrusion 33 is also provided at the head end of the second inner rod 3. The second limiting protrusion 33 is clamped on a side surface of the opening 22 close to the tail end of the syringe 1. The second limiting protrusion 33 cooperates with the opening 22 to limit the axial movement of the first inner rod 2 and the second inner rod 3 in opposite directions.
[0074] The safety self-destructive syringe further includes a positioning groove 25, which is provided on the inner wall of the tail end of the first inner rod 2, the center line of which is parallel to the length direction of the first inner rod 2, and the positioning groove 25 is used to limit the axial rotation of the block 5. The positioning groove 25 is located between the tail end of the first inner rod 2 and the opening 22, and the depth of the positioning groove 25 decreases from the tail end to the head end of the first inner rod 2.
[0075] During operation, the present invention cooperates with the first inner rod and the second inner rod. In the initial state of the safety self-destruct syringe, that is, when the safety self-destruct syringe is not in use, the first inner rod and the second inner rod are separated by a maximum distance and are within a maximum length limited by the cooperation between the guide rail and the guide groove, and the cooperation between the clamping block and the clamping groove.
[0076] After using the safety self-destructing syringe, gently rotate the second inner rod 90 degrees to make the block fall into the positioning groove, and the guide rail also corresponds to the guide groove. Gently push the second inner rod forward to the shortest distance. At this time, the block is connected to the opening of the first inner rod, and the locking is completed. The first inner rod and the second inner rod all fall into the syringe and cannot be pulled out for reuse. At the same time, since the needle part of the safety self-destructing syringe is always in the direction and state when in use during the entire operation, it effectively protects the personal safety of oneself and others.
[0077] During the rotation of the second inner rod, the second limiting protrusion of the second inner rod is clamped in the opening of the first inner rod, and cooperates to limit the axial movement of the first inner rod and the second inner rod away from each other.
[0078] Example 2
[0079] Please combine Figure 13-Figure 19 It is understood that the structure of the safety self-destructive syringe of this embodiment is basically the same as that of the embodiment 1, except that the block 5 is arranged on the inner wall surface of the first inner rod 2, the first clamping device is the second clamping groove 36, and the second clamping groove 36 is arranged on the second inner rod 3; the second clamping device is the third clamping groove 37, and the third clamping groove 37 is arranged between the tail end of the second inner rod 3 and the second clamping groove 36; wherein the block 5 is used to be clamped in the second clamping groove 36 or the third clamping groove 37, and the block 5 cooperates with the second clamping groove 36 to limit the relative movement of the first inner rod 2 and the second inner rod 3 in the axial direction; the block 5 cooperates with the third clamping groove 37 to limit the relative movement of the first inner rod 2 and the second inner rod 3 in the axial direction. The second clamping groove 36 and the third clamping groove 37 are both arranged on the outer wall surface of the first inner rod 2 along the circumferential direction. In other embodiments, the arrangement of the second clamping groove 36 and the third clamping groove 37 is not limited to being arranged along the circumferential direction of the first inner rod 2.
[0080] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.
Claims
1. A safety self-destructive syringe, comprising a syringe, characterized in that: The safety self-destructive syringe also includes: A first inner rod and a second inner rod, wherein the first inner rod and the second inner rod are movably sleeved in the syringe from outside to inside in sequence; A card block, the card block is located in the syringe; A first locking device; A second locking device; The clamping block is used to be clamped on the first clamping device or the second clamping device, and the clamping block cooperates with the first clamping device to limit the relative movement of the first inner rod and the second inner rod along the axial direction; The clamping block cooperates with the second clamping device to limit the relative movement of the first inner rod and the second inner rod along the axial direction; The safety self-destructive syringe further comprises a first limiting mechanism, wherein the first limiting mechanism is used to limit the axial movement of the second inner rod relative to the first inner rod; The safety self-destructive syringe further comprises a positioning groove, which is arranged on the inner wall of the tail end of the first inner rod, the center line of which is parallel to the length direction of the first inner rod, and the positioning groove is used to limit the axial rotation of the block; The positioning groove is located between the tail end of the first inner rod and the second positioning device, and the depth of the positioning groove decreases from the tail end to the head end of the first inner rod.
2. The safety self-destructive syringe according to claim 1, characterized in that: The clamping block is arranged on the outer wall surface of the second inner rod; the first clamping device is a first clamping groove, which is arranged at the tail end of the first inner rod; the second clamping device is an opening, which is arranged in the middle of the first inner rod; The clamping block is used to be clamped in the first clamping slot or the opening, and the clamping block cooperates with the first clamping slot to limit the relative movement of the first inner rod and the second inner rod along the axial direction; The block cooperates with the opening to limit the axial movement of the first inner rod and the second inner rod away from each other.
3. The safety self-destructive syringe according to claim 2, characterized in that: The first limiting mechanism includes a guide rail and a guide groove, the guide rail is arranged on the first inner rod, the guide groove is arranged on the head end of the second inner rod, and the guide rail and the guide groove cooperate to limit the axial movement of the second inner rod relative to the first inner rod.
4. The safety self-destructive syringe according to claim 1, characterized in that: The safety self-destructive syringe further comprises a second limiting mechanism, and the second limiting mechanism is used to limit the first inner rod from rotating axially relative to the syringe.
5. The safety self-destructive syringe according to claim 4, characterized in that: The second limiting mechanism includes a first limiting protrusion and a limiting groove, the first limiting protrusion is arranged on the outer wall of the first inner rod, the limiting groove is arranged on the limiting ring of the syringe, the first limiting protrusion is slidably arranged in the limiting groove, and the first limiting protrusion and the limiting groove cooperate to limit the axial rotation of the first inner rod relative to the syringe.
6. The safety self-destructive syringe according to claim 2, characterized in that: A second limiting protrusion is also provided at the head end of the second inner rod, and the second limiting protrusion is clamped on a side surface of the opening close to the tail end of the syringe. The second limiting protrusion cooperates with the opening to limit the axial movement of the first inner rod and the second inner rod away from each other.
7. The safety self-destructive syringe according to claim 1, characterized in that: The clamping block is arranged on the inner wall surface of the first inner rod; the first clamping device is a second clamping slot, and the second clamping slot is arranged on the second inner rod; the second clamping device is a third clamping slot, and the third clamping slot is arranged between the tail end of the second inner rod and the second clamping slot; The clamping block is used to be clamped in the second clamping slot or the third clamping slot, and the clamping block cooperates with the second clamping slot to limit the relative movement of the first inner rod and the second inner rod along the axial direction; The clamping block cooperates with the third clamping groove to limit the relative movement of the first inner rod and the second inner rod along the axial direction.
8. The safety self-destructive syringe according to any one of claims 1 to 7, characterized in that: The first inner rod is made of a ductile material.
Citation Information
Patent Citations
Needle whip-back controllable injector for pre-embedding vaccine
CN101318043A
Safe self -destruction type syringe
CN208756705U