Sliding sleeve type anti-stabbing syringe

Abstract

The utility model discloses a sliding sleeve type anti-stabbing syringe, which belongs to the technical field of medical syringes and comprises a needle tube, a connecting tube is fixedly mounted at one end of the needle tube, a mounting block is fixedly mounted at the bottom of the connecting tube, and rectangular grooves are symmetrically arranged on two sides of the bottom of the mounting block. According to the sliding sleeve type anti-stabbing syringe, by arranging a trapezoidal clamping block, a fixing spring and a trapezoidal clamping groove, the trapezoidal clamping block is pressed to retract into a corresponding rectangular groove, and a protective sleeve is pushed to slide on the surface of a needle tube, so that the protective sleeve tightly presses the trapezoidal clamping block into the rectangular groove and slides at the bottom of the trapezoidal clamping block until the surface of a needle head is sleeved with the protective sleeve; the mounting block corresponds to the trapezoidal clamping groove, and the trapezoidal clamping block is ejected out of the rectangular groove to be clamped into the trapezoidal clamping groove under the springback effect of the fixed spring, so that the sheath is clamped and fixed to the surface of one end of the needle tube, and the situation that the sheath is loosened from one end of the needle tube, and a needle head is exposed in the external environment to puncture personnel is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to medical syringe technical field, concretely is slipper type anti -puncture syringe. BACKGROUND

[0002] The syringe is a common medical appliance, which is composed of a needle tube and a piston rod. The syringe is widely used in medical injection, blood extraction, and scientific experiments. The syringe is usually disposable to reduce the risk of cross infection. In order to prevent the needle from piercing the personnel after the injection is completed, a slipper is arranged on the surface of the needle tube to wrap the surface of the needle.

[0003] The existing slipper type anti-puncture syringe is prone to move on the surface of the needle tube after the injection is completed, which causes the needle to protrude from the sheath and pierce the personnel. Therefore, improvement is needed. UTILITY MODEL CONTENTS

[0004] In order to overcome the above-mentioned defects, the utility model provides a slipper type anti-puncture syringe, which solves the problem that the existing slipper type anti-puncture syringe is prone to rotate on the surface of the needle tube after the injection is completed, which causes the sheath and the needle tube to rub and deform, resulting in the needle protruding from the sheath.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a slipper type anti-puncture syringe, comprising a needle tube, a connecting tube fixedly installed at one end of the needle tube, an installation block fixedly installed at the bottom of the connecting tube, the installation block, two symmetrical rectangular grooves provided on the bottom of the installation block, a symmetrical installation sliding groove provided at the top of the rectangular groove, a limiting sliding plate slidably installed in the installation sliding groove, a fixed clamping rod fixedly installed at the bottom of the limiting sliding plate, the fixed clamping rod extending through the installation sliding groove and extending to the inside of the rectangular groove, a trapezoidal clamping block fixedly installed at one end of the fixed clamping rod inside the rectangular groove, a fixed spring provided on the surface of the fixed clamping rod inside the rectangular groove, and a sheath slidably installed on the surface of the needle tube.

[0006] As a further scheme of the utility model, a piston rod is slidably installed at one end of the needle tube away from the connecting tube, and the piston rod extends through the needle tube, and a piston head is fixedly installed at one end of the piston rod inside the needle tube.

[0007] As a further scheme of the utility model, a needle is fixedly installed at one end of the connecting tube away from the needle tube, and the needle tube, the connecting tube, and the needle are in communication with each other.

[0008] As a further scheme of the utility model: the both sides of the inner wall of the rectangular groove are respectively provided with symmetrical limiting sliding grooves one, the both sides of the trapezoidal clamping block are respectively fixedly provided with symmetrical limiting protrusions two, and the limiting protrusions two correspond to the positions of the limiting sliding grooves one.

[0009] As a further scheme of the utility model: the bottom of one end of the sheath is provided with a positioning clamping groove, the shape of the positioning clamping groove corresponds to that of the mounting block, the bottom of the inner wall of the sheath away from the positioning clamping groove is provided with a trapezoidal clamping groove, and the trapezoidal clamping groove corresponds to the position of the trapezoidal clamping block.

[0010] As a further scheme of the utility model: the surface of the needle tube close to one end of the connecting pipe is fixedly provided with symmetrical limiting protrusions one, the both sides of the inner wall of the sheath are provided with symmetrical limiting sliding grooves two, and the limiting sliding grooves two correspond to the positions of the limiting protrusions one.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. The slide sleeve type anti-stabbing syringe, through the trapezoidal clamping block, the fixed spring and the trapezoidal clamping groove, the trapezoidal clamping block is pressed into the corresponding rectangular groove, the sheath is slid on the surface of the needle tube, the sheath is pressed tightly in the rectangular groove, the sheath is slid on the bottom of the trapezoidal clamping block, until the sheath is sleeved on the surface of the needle, the mounting block corresponds to the trapezoidal clamping groove, under the rebound of the fixed spring, the trapezoidal clamping block is pushed out of the rectangular groove and clamped in the trapezoidal clamping groove, so that the sheath is clamped and fixed on the surface of one end of the needle tube, the sheath is prevented from loosening from one end of the needle tube, and the needle is prevented from being exposed to the external environment to stab the personnel.

[0013] 2. The slide sleeve type anti-stabbing syringe, through the needle tube, the limiting protrusions one, the sheath and the limiting sliding grooves two, when the sheath is slid on the surface of the needle tube, the limiting sliding grooves two are slid on the surface of the limiting protrusions one, until the limiting protrusions one are clamped at the port of the limiting sliding grooves two, the sheath is clamped at one end of the needle tube and sleeved on the surface of the needle, the sheath is prevented from rotating randomly when sleeved on the surface of the needle, the friction between the sheath and the needle tube is reduced when relatively rotating, the sheath and the needle tube are prevented from being worn and deformed and loosened. ACCURATE DRAWINGS

[0014] Figure 1 It is a sectional view structure schematic view of the utility model;

[0015] Figure 2 It is a sectional view structure schematic view of the needle tube, the piston rod and the mounting block of the utility model;

[0016] Figure 3 It is a sectional view structure schematic view of the utility model Figure 2 It is an enlarged structure schematic view of A in the utility model;

[0017] Figure 4The utility model discloses a cross section structure diagram of sheath.

[0018] In the figure: 1, needle tube, 2, piston rod, 3, piston head, 4, limit protruding block one, 5, connecting pipe, 6, mounting block, 7, needle, 8, rectangular groove, 9, mounting sliding slot, 10, limit sliding plate, 11, fixed clamping rod, 12, trapezoidal clamping block, 13, fixed spring, 14, limit protruding block two, 15, limit sliding slot one, 16, sheath, 17, positioning clamping groove, 18, trapezoidal clamping groove, 19, limit sliding slot two. DETAILED DESCRIPTION

[0019] The technical scheme of the patent will be further described in detail in connection with specific implementation manners.

[0020] As Figures 1-4 The utility model provides a technical scheme: the slide sleeve type anti -puncture syringe, including needle tube 1, the inside needle tube 1 is away from the end of connecting pipe 5 and is installed with piston rod 2 of sliding, and piston rod 2 one end passes through needle tube 1, and piston rod 2 is fixedly installed with piston head 3 in the end inside needle tube 1, through being equipped with piston rod 2, push piston rod 2 and move in needle tube 1 one end, make piston head 3 move in needle tube 1 inside, push the liquid medicine in needle tube 1 and export needle tube 1.

[0021] The end of needle tube 1 is fixedly installed with connecting pipe 5, and the end of connecting pipe 5 is fixedly installed with needle 7 away from needle tube 1, and needle tube 1, connecting pipe 5 and needle 7 communicate with each other, because of being equipped with needle 7, after needle 7 is stuck into the specified position, the liquid medicine in needle tube 1 is discharged from needle 7 and exports needle tube 1 and inputs the specified position.

[0022] Connecting pipe 5 bottom fixedly installed with mounting block 6, mounting block 6, the both sides of mounting block 6 bottom symmetry are equipped with rectangular groove 8, and the inside top symmetry of rectangular groove 8 is equipped with mounting sliding slot 9, and limit sliding plate 10 is slidably installed in mounting sliding slot 9, and fixed clamping rod 11 is fixedly installed in the bottom of limit sliding plate 10, and the bottom end of fixed clamping rod 11 extends to the inside of rectangular groove 8 through mounting sliding slot 9, and trapezoidal clamping block 12 is fixedly installed in the end of the inside of two groups of fixed clamping rod 11 in rectangular groove 8, and fixed spring 13 is equipped on the surface of fixed clamping rod 11 in rectangular groove 8, by being equipped with fixed spring 13, under the rebound action of fixed spring 13, trapezoidal clamping block 12 is pressed down and ejected rectangular groove 8, so that trapezoidal clamping block 12 can be clamped in positioning clamping groove 17 or trapezoidal clamping groove 18, thereby tightly clamping and fixing sheath 16 on the surface of needle tube 1;

[0023] Two sides of the inner wall of the rectangular groove 8 are respectively and symmetrically provided with limiting sliding grooves one 15, and the two sides of the trapezoidal clamping block 12 are respectively and symmetrically fixedly provided with limiting protrusions two 14, and the limiting protrusions two 14 correspond to the positions of the limiting sliding grooves one 15, and due to the limiting protrusions two 14 and the limiting sliding grooves one 15, when the trapezoidal clamping block 12 moves up and down in the rectangular groove 8, the limiting protrusions two 14 slide in the corresponding limiting sliding grooves one 15, so that the trapezoidal clamping block 12 cannot be tilted and deflected and stuck in the rectangular groove 8 when moving up and down.

[0024] The needle tube 1 is provided with a sheath 16 slidingly mounted on the surface thereof. The bottom of one end of the sheath 16 is provided with a positioning clamping groove 17 corresponding to the shape of the mounting block 6, and the bottom of the inner wall of the sheath 16 away from the positioning clamping groove 17 is provided with a trapezoidal clamping groove 18 corresponding to the position of the trapezoidal clamping block 12. The positioning clamping groove 17 and the trapezoidal clamping groove 18 are arranged to clamp and fix the sheath 16 on the surface of the needle tube 1 after the trapezoidal clamping block 12 is clamped into the positioning clamping groove 17, so that the needle 7 is exposed outside the sheath 16, facilitating the medical staff to inject the needle, and the sheath 16 is fixed on the surface of the needle tube 1 after the trapezoidal clamping block 12 is clamped into the trapezoidal clamping groove 18, so that the needle 7 is prevented from being exposed outside the sheath 16 and pricking the personnel.

[0025] The surface of one end of the needle tube 1 close to the connecting pipe 5 is symmetrically and fixedly provided with a limiting protrusion one 4, and the inner wall of the sheath 16 is symmetrically provided with limiting sliding grooves two 19 corresponding to the positions of the limiting protrusion one 4. The limiting protrusion one 4 and the limiting sliding grooves two 19 are arranged to slide the sheath 16 on the surface of the needle tube 1, so that the limiting sliding grooves two 19 slide on the surface of the limiting protrusion one 4. When the limiting protrusion one 4 is located at the two ends of the limiting sliding grooves two 19, the sheath 16 is clamped at different positions on the surface of the needle tube 1, so that the needle 7 can be exposed or wrapped in the sheath 16.

[0026] The working principle of the utility model is as follows:

[0027] The trapezoidal clamping block 12 is pressed to be separated from the trapezoidal clamping groove 18 and is retracted into the rectangular groove 8, the sheath 16 is pushed to slide on the surface of the needle tube 1 until the needle 7 is completely stretched out of the sheath 16, the sheath 16 is sleeved on the surface of the needle tube 1, the trapezoidal clamping block 12 is pushed out of the rectangular groove 8 and is clamped into the positioning clamping groove 17 under the rebounding action of the fixed spring 13, the sheath 16 is clamped and fixed on the surface of the needle tube 1, the needle 7 is pricked into the specified position after the appropriate medicinal liquid is sucked into the needle tube 1, the piston rod 2 drives the piston head 3 to move in the needle tube 1, and the medicinal liquid in the needle tube 1 is discharged from the needle 7.

[0028] After the injection of the needle tube 1 is completed, the trapezoidal block 12 is pushed out of the positioning clamping groove 17 and retracted into the rectangular groove 8, the sheath 16 is pushed to move on the surface of the needle tube 1 until the needle 7 is completely received in the sheath 16, the trapezoidal block 12 is corresponded with the position of the trapezoidal clamping groove 18, the trapezoidal block 12 is pushed out of the rectangular groove 8 and clamped in the trapezoidal clamping groove 18 under the rebounding action of the fixing spring 13, and the sheath 16 is clamped and fixed at one end of the needle tube 1 and wrapped on the surface of the needle 7.

[0029] In the description of the utility model, it is to explain that, unless there is definite stipulation and limitation, the term "installation", "connection" should be 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 directly connected, also can be indirectly connected through intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the above-mentioned terms in the utility model can be understood by the specific meaning in the specific circumstances.

[0030] The above has made the detailed explanation to the preferred embodiment of the patent, but the patent is not limited to the above-mentioned embodiment, within the knowledge scope of ordinary skilled in the art, various changes can be made without departing from the purpose of the patent.

Claims

1. A sliding sleeve type stab-proof syringe, comprising a needle tube (1), characterized in that: One end of the needle tube (1) is fixedly installed with a connecting tube (5), and a mounting block (6) is fixedly installed at the bottom of the connecting tube (5). The mounting block (6) and the bottom of the mounting block (6) are symmetrically provided with rectangular grooves (8). The top of the rectangular groove (8) is symmetrically provided with a mounting slide (9). A limiting slide (10) is slidably installed inside the mounting slide (9). A fixed clamping rod (11) is fixedly installed at the bottom of the limiting slide (10), and the bottom end of the fixed clamping rod (11) passes through the mounting slide (9) and extends to the inside of the rectangular groove (8). One end of the two groups of fixed clamping rods (11) located inside the rectangular groove (8) is fixedly installed with a trapezoidal clamping block (12). The surface of the fixed clamping rod (11) located inside the rectangular groove (8) is provided with a fixing spring (13). A sheath (16) is slidably installed on the surface of the needle tube (1).

2. The sliding sleeve type stab-proof syringe according to claim 1, characterized in that: A piston rod (2) is slidably mounted on one end of the needle tube (1) away from the connecting tube (5), and one end of the piston rod (2) passes through the needle tube (1). A piston head (3) is fixedly mounted on the end of the piston rod (2) located inside the needle tube (1).

3. The sliding sleeve type stab-proof syringe according to claim 1, characterized in that: A needle (7) is fixedly mounted on one end of the connecting tube (5) away from the needle tube (1), and the needle tube (1), the connecting tube (5) and the needle (7) are in communication with each other.

4. The sliding sleeve type stab-proof syringe according to claim 1, characterized in that: A limiting slide groove (15) is symmetrically provided on both sides of the inner wall of the rectangular groove (8), and a limiting protrusion (14) is symmetrically fixedly installed on both sides of the trapezoidal block (12), and the position of the limiting protrusion (14) corresponds to that of the limiting slide groove (15).

5. The sliding sleeve type stab-proof syringe according to claim 1, characterized in that: A positioning slot (17) is provided at the bottom of one end of the sheath (16), and the positioning slot (17) corresponds to the shape of the mounting block (6); a trapezoidal slot (18) is provided at the bottom of the inner wall of the sheath (16) away from the positioning slot (17), and the trapezoidal slot (18) corresponds to the position of the trapezoidal block (12).

6. The sliding sleeve type stab-proof syringe according to claim 1, characterized in that: A limiting protrusion (4) is symmetrically fixedly installed on the surface of the needle tube (1) near one end of the connecting tube (5), and limiting grooves (19) are symmetrically provided on both sides of the inner wall of the sheath (16), and the positions of the limiting grooves (19) and the limiting protrusion (4) correspond to each other.

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