CN105944189A - A needle body protecting device - Google Patents

Abstract

The invention provides a needle protection device, which comprises an outer shell and an inner shell coaxial with the outer shell, the outer shell and the inner shell are in a tubular shape, one end of the outer shell is a first shell end, the The other end of the outer casing is the second outer casing end, and the inner cavity of the first outer casing end is provided with a needle body connecting seat, and the outer wall of the needle body connecting seat is connected with the inner wall of the outer casing through a first connecting piece. One end is the first inner shell end, the other end of the inner shell is the second inner shell end, and the inner shell is telescopically arranged in the inner cavity of the outer shell along the direction of the first inner shell end. The invention has the beneficial effects of reducing post-processing costs, preventing accidental stab wounds, preventing repeated use, and making clinical operations more convenient.

Description

A needle protection device

technical field

The invention belongs to the field of medical instruments, in particular to a needle body protection device.

Background technique

At present, domestic and foreign medical institutions, hospitals and individuals generally use ordinary disposable syringes. After use, the needle tip is exposed, which is very easy to stab medical staff and recovery personnel, causing cross-infection.

Contents of the invention

The object of the present invention is to overcome the disadvantages of the above-mentioned prior art, and provide a needle protection device with simple structure, convenient operation and low cost.

Technical scheme of the present invention is:

A needle protection device, comprising an outer shell and an inner shell coaxial with the outer shell, the outer shell and the inner shell are in a tubular shape, one end of the outer shell is a first shell end, the outer shell The other end is the second shell end, the inner cavity of the first shell end is provided with a needle connecting seat, the outer wall of the needle connecting seat is connected with the inner wall of the shell through the first connecting piece, and one end of the inner shell is the second shell end. One inner shell end, the other end of the inner shell is the second inner shell end, and the inner shell is telescopically telescopically arranged in the inner cavity of the outer shell along the direction of the first inner shell end of the first connector The cross section is rectangular.

The side wall of the inner casing is provided with a first long hole penetrating through the side wall of the inner casing. The first long hole is used in conjunction with the first connecting piece. The first long hole is elongated and extends to the first At the end of the inner casing, the length of the first long hole is less than the length of the inner casing, and the width of the first long hole is greater than or equal to the width of the first connecting piece.

The side wall of the outer shell is provided with a second long hole penetrating through the side wall of the outer shell. The second long hole is elongated and extends to the end of the second outer shell. The length of the second long hole is less than that of the outer shell. length, the side wall of the second inner shell end of the inner shell is provided with an operation switch used in conjunction with the second long hole, the operation switch includes a second connecting piece and a key, and the key is connected to the inner shell through the second connecting piece The side wall of the body is connected, and the second connecting piece is arranged in the second long hole, and the telescopic state of the inner casing can be changed by pushing the button.

The cross section of the second connecting piece is wedge-shaped.

The second elongated hole is provided with a limit structure close to the end of the first outer shell, and the limit structure includes a first end edge, a second end edge, a first buckle and a reinforcement edge, and the second elongate hole is close to the first end The short side of the outer shell end is the first termination edge, the two long sides of the second elongated hole are sliding edges, and the second elongated hole is symmetrically provided with first buckles on both sides close to the first outer shell end. The first buckle is a right-angled triangle, the right angle of the right-angled triangle is set at the end of the first outer shell and one right-angled side is connected to the sliding side, and the sliding side between the other right-angled side of the right-angled triangle and the first terminating side is The second terminating side, the length of the second terminating side is greater than or equal to the length of the second connecting piece, and a section of the sliding side where the hypotenuse of the right triangle is connected to the sliding side and extends along the direction of the end of the second outer casing is a reinforcing side.

The limiting structure is provided with a protruding edge, and the protruding edge protrudes from the outer wall of the housing.

Both sides of the position-limiting structure are symmetrically provided with a third long hole penetrating through the side wall of the outer casing, and the third long hole is in the shape of a strip.

A second buckle is symmetrically provided on the sliding side of the second outer shell end of the second long hole, and the second buckle is in a sawtooth shape.

The needle body connection seat includes a protective tube and at least two engaging keys, the protective tube includes a cylindrical bottom and a cylindrical hollow body, one end of the bottom is vertically connected to one end of the cylindrical body, and the Holes are provided at the bottom of the cylinder, and the engaging keys are arc-shaped, and the engaging keys are arranged on the inner wall of the cylinder.

The advantages and positive effects of the present invention are: reducing post-processing cost, preventing accidental stab wounds, preventing repeated use, more convenient clinical operation, and the like.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the initial state of the present invention

Fig. 2 is a schematic diagram of the structure of the present invention in an extended state

Fig. 3 is a schematic diagram of the structure of the outer casing of the present invention

Figure 4 is an enlarged schematic diagram of part B in Figure 3

Figure 5 is a schematic top view of Figure 3

Figure 6 is an enlarged schematic diagram of part A in Figure 5

Fig. 7 is a schematic diagram of the structure of the inner casing of the present invention

Figure 8 is a schematic bottom view of Figure 7

In the picture:

1. Outer shell 2. Needle connector 3. Inner shell

4. Operation switch 11. The first connecting piece 12. The second long hole

13. First shell end 14. Second shell end 15. Small piece of shell

21. Protective cylinder 22. Engaging key 31. First inner shell end

32. The first long hole 33. The second inner shell end 34. The small piece of the inner shell

41. Button 42. Second connector 121. Limiting structure

122. The third long hole 123. The second buckle 211. The barrel

212, cylinder bottom 1211, first end edge 1212, second end edge

1213. The first buckle 1214. Reinforcing edge

detailed description

As shown in Figures 1-8, the present invention includes an outer casing 1 and an inner casing 3 coaxial with the outer casing 1, the outer casing 1 and the inner casing 3 are in a tubular shape, and one end of the outer casing 1 is a second A shell end 13, the other end of the shell body 1 is the second shell end 14, the inner cavity of the first shell end 13 is provided with a needle connecting seat 2, and the outer wall of the needle connecting seat 2 passes through the first connecting piece 11 is connected with the inner wall of the outer shell 1, one end of the inner shell 3 is the first inner shell end 31, the other end of the inner shell 3 is the second inner shell end 32, and the inner shell 3 is along the first The inner housing end 31 is telescopically telescopically arranged in the inner cavity of the outer housing 1 .

The first connecting piece 11 is a strip-shaped connecting piece with arcs at both ends, the arc at one end of the first connecting piece 11 is connected with the inner wall of the outer casing 1, and the arc at the other end of the first connecting piece 11 is connected with the inner wall. The outer wall of the housing 3 is fitted and connected.

The cross section of the first connecting member 11 is rectangular.

The side wall of the inner casing 3 is provided with a first long hole 32 penetrating through the side wall of the inner casing 3. The first long hole 32 is used in conjunction with the first connector 11. The first long hole 32 is a long strip shape and extend to the end of the first inner shell end 31, the length of the first long hole 32 is less than the length of the inner shell 3, the width of the first long hole 32 is greater than or equal to the width of the first connecting piece 11, which is convenient for inner The shell 3 expands and contracts in the inner cavity of the outer shell 1 .

The side wall 1 of the outer casing is provided with a second long hole 12 penetrating through the side wall of the outer casing 1. The second long hole 12 is long and extends to the end of the second outer casing end 14. The second long hole 12 is elongated and extends to the end of the second outer casing end 14. The length of the hole 12 is less than the length of the outer casing 1, and the side wall of the second inner casing end 33 of the inner casing 3 is provided with an operation switch 4 used in conjunction with the second long hole 12, and the operation switch 4 includes a second connecting piece 42 and Button 41, the button 41 is connected with the side wall of the inner casing 3 through the second connecting piece 42, the second connecting piece 42 is arranged in the second long hole 12, and the telescopic state of the inner casing 3 can be changed by pushing the button 41 .

The first inner casing end 31 of the first long hole 32 is provided with an inner casing small piece 34 , that is, the first long hole 32 passes through the side wall of the inner casing 3 except for the inner casing small piece 34 .

The second outer casing end 14 of the second elongated hole 12 is provided with an outer casing small piece 15 , that is, the second elongated hole 12 passes through the side wall of the outer casing 1 except for the outer casing small piece 15 .

The small pieces 15 of the outer shell and the small pieces 34 of the inner shell are used in cooperation to prevent the separation of the inner shell 3 from the outer shell 1 when the inner shell 3 is stretched out.

The button 41 is semi-elliptical, the upper and lower surfaces of the semi-elliptical shape are arc-shaped, and the lower surface of the button 41 is connected with the second connecting member 42 .

The end surface of the button 41 away from the second connecting member 42 is provided with anti-skid lines.

The second connecting piece 42 is a strip-shaped connecting piece with arcs at both ends, the arc at one end of the second connecting piece 42 is connected with the outer wall of the outer shell 1, and the arc at the other end of the second connecting piece 42 is connected with the button. The lower surface of the button 41 is mated and connected, and the button 41 forms an angle with the outer casing 1 .

The cross section of the second connecting member 42 is wedge-shaped.

The second elongated hole 12 is provided with a limiting structure 121 close to the end 13 of the first outer shell, and the limiting structure 121 includes a first terminating edge 1211, a second terminating edge 1212, a first buckle 1213 and a reinforcing edge 1214. The short side of the second elongated hole 12 close to the first shell end 13 is the first termination edge 1211, the two long sides of the second elongated hole 12 are sliding sides, and the second elongated hole 12 is close to the first shell Both sides of the body end 13 are symmetrically provided with first buckles 1213, and the first buckles 1213 are right-angled triangles. The sliding side between another right-angled side of the right-angled triangle and the first terminating side 1211 is the second terminating side 1212, and the length of the second terminating side 1212 is greater than or equal to the length of the second connector 42, and the oblique side of the right-angled triangle A section of the sliding edge extending along the direction of the second outer casing end 14 at the connection between the edge and the sliding edge is the reinforcing edge 1214 .

The limiting structure 121 is provided with a protruding edge, and the protruding edge protrudes from the outer wall of the outer casing 1 .

Both sides of the limiting structure 121 are symmetrically provided with a third long hole 122 penetrating through the side wall of the outer shell 1, the third long hole 122 is long, and the third long hole 122 is used to weaken the first card. The strength of the buckle 1213 allows the first buckle 1213 to have a certain elastic deformation; the position-limiting structure 121 is used to lock the position of the operation switch 4 and keep the protruding state of the inner casing 4 unchanged.

The second outer casing end 14 of the second elongated hole 12 is symmetrically provided with a second buckle 123 on the sliding side, and the second buckle 123 is in a sawtooth shape. 3 falls off from the inner cavity of the outer casing 1 in the initial state.

The needle body connection seat 2 includes a protective cylinder 21 and at least two engagement keys 22. The protective cylinder 21 includes a cylindrical bottom 212 and a cylindrical hollow body 211. One end of the bottom 212 is connected to the bottom of the cylinder. One end of the body 211 is vertically connected, the bottom 212 of the cylinder is provided with a hole, the engaging key 2 is in the shape of an arc, and the engaging keys 22 are arranged on the inner wall of the cylinder 211 .

The end of the needle away from the needle tip is meshed with the needle connecting seat 2, and the barrel bottom 212 is connected with the syringe body.

The working process of this example: first connect the needle body with the needle body connecting seat 2 of the needle body protection device, then connect the syringe body with the cylinder bottom 212 of the needle body connecting seat 2, remove the needle body protective cover, and use the needle body For related work, take off the syringe body after work is completed, push the operation switch 4 to the limit structure 121, and the inner casing 3 is protected around the needle body.

An embodiment of the present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.

Claims (10)

1. A needle protection device, characterized in that: it comprises an outer casing and an inner casing coaxial with the outer casing, the outer casing and the inner casing are in a tubular shape, and one end of the outer casing is a first outer casing end , the other end of the outer casing is the second outer casing end, the inner cavity of the first outer casing end is provided with a needle connecting seat, the outer wall of the needle connecting seat is connected with the inner wall of the outer casing through a first connecting piece, the inner One end of the shell is the first inner shell end, the other end of the inner shell is the second inner shell end, and the inner shell is telescopically arranged in the inner cavity of the outer shell along the direction of the first inner shell end. 2. The needle guard according to claim 1, characterized in that: the cross-section of the first connecting member is rectangular. 3. The needle protection device according to claim 2, characterized in that: the side wall of the inner housing is provided with a first long hole, and the first long hole is used in conjunction with the first connecting piece, and the first long hole The long hole is long and extends to the end of the first inner casing, the length of the first long hole is smaller than the length of the inner casing, and the width of the first long hole is greater than or equal to the width of the first connecting piece. 4. The needle protection device according to any one of claims 1-3, characterized in that: the side wall of the outer shell is provided with a second elongated hole, and the second elongated hole is elongated and extends to the second elongated hole. Two outer casing ends, the length of the second long hole is less than the length of the outer casing, and the side wall of the second inner casing end of the inner casing is provided with an operation switch used in conjunction with the second long hole, and the operation switch includes a first Two connectors and a button, the button is connected with the side wall of the inner casing through the second connector, the second connector is arranged in the second long hole, and the telescopic state of the inner casing can be changed by pushing the button. 5. The needle guard according to claim 4, characterized in that: the cross-section of the second connecting member is wedge-shaped. 6. The needle body protection device according to claim 4, characterized in that: the second elongated hole is provided with a limiting structure near the end of the first outer shell, and the limiting structure includes a reinforcing edge, a first terminating edge, a second Two terminating sides and the first buckle, the short side of the second elongated hole close to the end of the first outer shell is the first terminating side, the two long sides of the second elongated hole are sliding sides, and the second elongated hole The first buckle is arranged symmetrically on both sides close to the first outer shell end, the first buckle is a right triangle, the right angle of the right triangle is set at the first outer shell end and a right angle side is connected to the sliding side, The sliding side between another right-angled side of the right triangle and the first terminating side is the second terminating side, and the length of the second terminating side is greater than or equal to the length of the second connector, and the hypotenuse and the sliding side of the right-angled triangle A section of sliding edge extending along the direction of the end of the second outer casing at the connection point is a reinforcing edge. 7. The needle protection device according to claim 6, characterized in that: the limiting structure is provided with a protruding edge, and the protruding edge protrudes from the outer wall of the housing. 8 . The needle protection device according to claim 7 , wherein third long holes are arranged symmetrically on both sides of the limiting structure, and the third long holes are elongated. 9 . 9. The needle body protection device according to claim 6, characterized in that: second buckles are symmetrically provided on the sliding side of the second outer shell end of the second long hole, and the second buckles are in a sawtooth shape . 10. The needle protection device according to claim 1, characterized in that: the needle connection seat comprises a protection cylinder and at least two engaging keys, and the protection cylinder comprises a cylindrical bottom and a cylindrical hollow cavity A cylinder, one end of the cylinder bottom is vertically connected to one end of the cylinder, the cylinder bottom is provided with a hole, and the engaging keys are arc-shaped, and the engaging keys are arranged on the inner wall of the cylinder.