Scaler and injection device for eye injection

Abstract

The utility model relates to the technical field of medical instruments, and provides a graduator and an injection device for eye injection, the graduator is sleeved on an injector, the graduator comprises a graduator main body with a containing cavity and a locking mechanism arranged on the graduator main body, the graduator main body is provided with a containing opening and a needle hole for the needle part of the injector to penetrate through, and the locking mechanism is arranged on the graduator main body. The containing opening and the needle hole are respectively communicated with the containing cavity, the injector penetrates through the containing opening and is placed in the containing cavity, and the injector is limited at any position in the extending direction of the graduator body through the locking mechanism. The preset depth is set after the injection needle is arranged on the graduator body in a sleeved mode, when liquid medicine is injected, the injection needle pierces into the eyeball to reach the preset depth, at the moment, the bottom of the graduator body can abut against the eyeball, the phenomenon that the injection needle pierces too deep due to sudden puncture resistance is effectively overcome, and therefore precise control over the puncture depth is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of medical apparatus and instruments, specifically is a scale and injection device for eye injection. BACKGROUND

[0002] Posterior injection is to inject medicine into the eyeball to achieve therapeutic or anesthetic effect, which is an important treatment method for treating vitreoretinal diseases and optic nerve diseases in ophthalmology, and is also an important operation for ciliary ganglion block anesthesia in ophthalmology.

[0003] At present, the traditional eyeball injection is to inject liquid medicine after the doctor holds the injector to pierce into the eyeball to a certain depth, because the eyeball has a certain flexibility and strength, the doctor needs to force to a certain extent to pierce into the eyeball to inject liquid medicine, the piercing into the eyeball is relatively sudden, and the doctor cannot accurately grasp the force, the force is too small to pierce into the eyeball, and the force is too large to stop in time due to inertia, resulting in too deep piercing into the eyeball and damaging the optic nerve. In addition, the depth of the injector is 2-5mm from the surface of the eyeball to the inside of the eyeball, and the existing injector is subjectively judged by the doctor's experience and method, and it is not convenient to accurately position. Therefore, the above problems need to be improved and developed. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a scale and injection device for eye injection, which can effectively overcome the sudden puncture resistance and too deep piercing, thereby ensuring accurate control of the puncture depth, and the specific implementation manner is as follows:

[0005] A scale is sleeved on an injector, the scale comprises a scale body with a containing cavity and a locking mechanism arranged on the scale body, the scale body is formed with a containing opening and a needle hole for the needle part of the injector to penetrate, the containing opening and the needle hole are communicated with the containing cavity respectively, the injector penetrates the containing opening and is placed in the containing cavity, and the locking mechanism limits the injector at any position in the extension direction of the scale body.

[0006] As a further scheme of the utility model, the scale body is a transparent shell visible to the containing cavity, and the scale body with the transparent shell is provided with a scale ruler along the moving track direction of the injector.

[0007] As a further scheme of the utility model, the locking mechanism comprises a control threaded rod screwed on the scale body and a positioning clamping sleeve rotationally connected to the control threaded rod, the control threaded rod is rotated to drive the positioning clamping sleeve to move towards the injector, so as to limit the injector in the containing cavity.

[0008] As a further scheme of the utility model, a rotating block is arranged on the control threaded rod, the positioning clamping sleeve is provided with an embedding groove corresponding to the rotating block, and the rotating block is rotationally connected in the embedding groove.

[0009] As a further scheme of the utility model, an elastic member is arranged on the control threaded rod, and the two ends of the elastic member are respectively abutted on the positioning clamping sleeve and the scale main body.

[0010] As a further scheme of the utility model, a connecting sleeve protrusion is arranged on the scale main body, the connecting sleeve protrusion is arranged corresponding to the control threaded rod, and the control threaded rod is sleeved on the connecting sleeve protrusion and is threadedly connected with the connecting sleeve protrusion.

[0011] As a further scheme of the utility model, a locking control cap is arranged on the rod end of the control threaded rod in the axial direction, and the control threaded rod is limited in the moving position by cooperating with the locking control cap and the connecting sleeve protrusion.

[0012] As a further scheme of the utility model, a limiting rod is arranged on the positioning clamping sleeve, the limiting rod is sleeved on the scale main body and is arranged along the length direction of the positioning clamping sleeve.

[0013] As a further scheme of the utility model, two limiting rods are arranged, and the two limiting rods are arranged side by side.

[0014] In addition, the utility model also provides an injection device for eye injection, which comprises a scale, and the injection device further comprises an injection needle, and the injection needle is movably sleeved on the scale.

[0015] Due to the adoption of the above technical scheme, the utility model has the beneficial technical effects that:

[0016] 1. The injection needle of the utility model is sleeved on the scale main body to set a preset depth, when injecting liquid medicine, the injection needle is pierced into the eyeball to the preset depth, at this time, the bottom of the scale main body is abutted on the eyeball, the sudden puncture resistance is effectively overcome, and the puncture depth is ensured to be accurately controlled;

[0017] 2. The utility model sets a stop mechanism to lock the injection needle, solves the problem that the scale main body is used for a specific injection needle due to different specifications of the injection needle, meets the locking demand of injection needles of various specifications, and effectively expands the use range;

[0018] 3. The utility model sets a spring between the positioning clamping sleeve and the scale main body, the spring is sleeved on the control threaded rod, the positioning clamping sleeve is locked more stably by the action force of the spring. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1A structure schematic view of a kind of scale and injection device for eye injection for the utility model specific embodiment;

[0020] Figure 2 A sectional view of a kind of scale for the utility model specific embodiment;

[0021] Figure 3 For the utility model Figure 2 The structure enlarged view of part A;

[0022] Figure 4 For the utility model Figure 2 The structure enlarged view of part B;

[0023] Figure 5 For the utility model Figure 2 The structure enlarged view of part C;

[0024] Figure 6 An explosion view of a kind of scale for the utility model specific embodiment;

[0025] Figure 7 The working state diagram of a kind of scale and injection device for eye injection after assembly for the utility model specific embodiment.

[0026] Mark explanation:

[0027] 1, scale main body, 2, injection needle, 3, envelope, 4, elastic card piece, 5, shell cover,

[0028] 11, flange, 12, stop mechanism, 13, scale, 14, connecting sleeve convex, 15, needle hole, 16, arc bottom surface, 17, recess, 18, card slot,

[0029] 121, locking control cap, 122, control screw rod, 123, limit rod, 124, positioning clamping sleeve, 125, locking tooth, 126, rotating block, 127, spring, 128, embedded slot,

[0030] 21, injection plunger, 22, positioning scale, 23, injection needle, 24, color mark line, 25, needle cylinder,

[0031] 51, clamping buckle, 52, connecting head. Specific embodiment

[0032] The specific embodiment of the utility model is described below in conjunction with the drawings and examples:

[0033] It should be noted that the structure, proportion, size and the like shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the implementation of the present application. Any modification of the structure, change of the proportion relationship or adjustment of the size, which does not affect the function and purpose of the present application, should still fall within the scope of the disclosed technology.

[0034] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" mentioned in the present specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship is also considered as the implementation of the present application without substantial change of the technical content.

[0035] Embodiment 1, in combination Figures 1 to 6 As shown in the drawings, the present embodiment provides a scale device which is sleeved on a syringe, the scale device comprising a scale device body 1 having a receiving cavity, and a locking mechanism 12 arranged on the scale device body 1, the scale device body 1 is formed with a receiving port and a needle hole 15 for the needle part of the syringe to penetrate, the receiving port and the needle hole 15 are respectively communicated with the receiving cavity, the syringe penetrates the receiving port and is placed in the receiving cavity, and the syringe is limited at any position in the extension direction of the scale device body 1 by the locking mechanism 12. The syringe enters the receiving cavity through the receiving port, and the syringe is locked by the locking mechanism 12, the depth of the syringe set in the scale device body 1, when injecting the drug liquid, the bottom of the scale device body 1 will be against the eyeball, the syringe penetrates into the eyeball to the preset depth, effectively overcomes the sudden penetration resistance to penetrate too deep, thereby ensuring the accurate control of the penetration depth.

[0036] Specifically, the scale device body 1 is arranged as a transparent shell which can see the receiving cavity, and the scale device body 1 with the transparent shell is provided with a scale ruler 13 along the moving track direction of the syringe. The transparent shell is made of polycarbonate, which has high transparency to facilitate observation of the flow of the drug liquid. The transparent shell and the scale ruler 13 are arranged to facilitate the doctor to adjust the position of the syringe relative to the scale device body 1 according to the preset depth when using, and also facilitate the observation of the internal condition of the receiving cavity of the scale device body 1.

[0037] In the present embodiment, the bottom of the scale device body 1 has an arc-shaped bottom surface 16, which is more conducive to the operation of injecting the drug liquid by fitting the eyeball.

[0038] Specifically, the locking mechanism 12 is oppositely provided with two groups, and the two groups of locking mechanisms 12 move towards the central axis direction of the scale body 1, the locking mechanism 12 comprises a control threaded rod 122 screwed on the scale body 1, and a positioning clamping sleeve 124 rotationally connected to the control threaded rod 122, rotating the control threaded rod 122 drives the positioning clamping sleeve 124 to move towards the syringe direction, so as to realize the positioning of the syringe in the accommodating cavity. The scale body 1 has a threaded hole, the control threaded rod 122 is screwed with the threaded hole, and the rod end of the control threaded rod 122 is rotationally connected with the positioning clamping sleeve 124 after penetrating through the threaded hole, so that the control threaded rod 122 can push the positioning clamping sleeve 124 to move towards the syringe direction, thereby realizing the locking operation of the syringe.

[0039] In the embodiment, the positioning clamping sleeve 124 is provided with locking teeth 125 corresponding to the locking surface of the syringe, the locking teeth 125 are provided in plurality, and the plurality of locking teeth 125 are arranged side by side along the length direction of the positioning clamping sleeve 124, when the locking mechanism 12 performs the locking operation, the locking teeth 125 abut on the syringe, thereby increasing the locking friction force between the positioning clamping sleeve 124 and the syringe, and further improving the locking stability of the syringe.

[0040] Specifically, the control threaded rod 122 is provided with a rotating block 126, the positioning clamping sleeve 124 is provided with an embedding groove 128 corresponding to the rotating block 126, and the rotating block 126 is rotationally connected in the embedding groove 128. The rotating block 126 is in a cylindrical structure and is axially arranged at the rod end of the control threaded rod 122, the embedding groove 128 is matched with the shape of the rotating block 126, when the control threaded rod 122 pushes the positioning clamping sleeve 124 to move, the rotating block 126 rotates along the embedding groove 128, thereby effectively preventing the positioning clamping sleeve 124 from rotating synchronously with the control threaded rod 122, so that the locking surface of the positioning clamping sleeve 124 always adheres to the syringe.

[0041] Specifically, the control threaded rod 122 is provided with an elastic member, and the two ends of the elastic member abut on the positioning clamping sleeve 124 and the scale body 1 respectively. Preferably, the elastic member is a spring 127, the spring 127 is arranged between the positioning clamping sleeve 124 and the scale body 1, and the spring 127 is sleeved on the control threaded rod 122, by the action force of the spring 127, the positioning clamping sleeve 124 can be more stably locked with the syringe.

[0042] Specifically, the scale body 1 is provided with a connecting sleeve protrusion 14 corresponding to the control threaded rod 122, the control threaded rod 122 is sleeved on the connecting sleeve protrusion 14 and is threadedly connected with the connecting sleeve protrusion 14. The connecting sleeve protrusion 14 has a threaded hole, the control threaded rod 122 penetrates through the threaded hole and is threadedly connected with the connecting sleeve protrusion 14, and the connecting sleeve protrusion 14 can extend the moving track of the control threaded rod 122, thereby ensuring the stability of the movement of the control threaded rod 122.

[0043] Specifically, the rod end of the control threaded rod 122 is axially provided with a locking control cap 121, the control threaded rod 122 is moved by the locking control cap 121 cooperating with the connecting sleeve protrusion 14 to limit the moving position. When the positioning clamping sleeve 124 moves to a certain distance, the locking control cap 121 abuts against the end face of the connecting sleeve protrusion 14, preventing the control threaded rod 122 from being pulled out of the connecting sleeve protrusion 14, thereby playing a limiting role on the control threaded rod 122.

[0044] Specifically, the positioning clamping sleeve 124 is provided with a limiting rod 123, the limiting rod 123 is sleeved on the scale body 1 and is arranged along the length direction of the positioning clamping sleeve 124. The limiting rod 123 is arranged on the positioning clamping sleeve 124 along the moving track direction of the syringe, which can effectively enhance the connection stability of the positioning clamping sleeve 124 and the scale body 1. Preferably, two limiting rods 123 are arranged, the two limiting rods 123 are arranged side by side and are located at the top end and the bottom end of the positioning clamping sleeve 124, which can further enhance the connection stability of the positioning clamping sleeve 124 and the scale body 1.

[0045] In the embodiment, the scale body 1 is provided with a sleeve hole corresponding to the limiting rod 123, the rod end of the limiting rod 123 penetrates through the sleeve hole and is connected with the positioning clamping sleeve 124, and the limiting rod 123 comprises a cap head which is axially arranged at the other rod end of the limiting rod 123. The cap head can effectively prevent the limiting rod 123 from being pulled out of the sleeve hole when the positioning clamping sleeve 124 moves to a certain distance, thereby further enhancing the limiting effect on the control threaded rod 122.

[0046] In the embodiment, the limiting rod 123 is arranged on the positioning clamping sleeve 124, and the positioning clamping sleeve 124 is arranged on the scale body 1. Figure 4As shown, the scale also includes a sealing film 3 and an elastic clamping piece 4, the sealing film 3 is made of silica gel material, which has excellent biocompatibility, chemical stability and elasticity. The silica gel sealing film 3 can maintain good sealing effect even after multiple punctures, and is widely used in the sealing of various medical devices and drug containers. When in use, the syringe can pierce the sealing film 3 into the scale body 1 (the sealing film 3 is a disposable product). The containing opening of the scale body 1 is formed with a flange 11, the flange 11 is provided with a groove 17, and the elastic clamping piece 4 is connected with the groove 17 to fix the edge of the sealing film 3 on the flange 11, thereby effectively ensuring the sealing of the scale body 1, and further ensuring the cleanliness inside the scale body 1.

[0047] In this embodiment, the scale is combined with Figure 5 As shown, the bottom of the scale body 1 is provided with a shell cover 5 for sealing the needle hole 15, and the bottom of the scale body 1 is provided with a clamping groove 18, and the shell cover 5 is connected with the clamping groove 18, the shell cover 5 includes a clamping buckle 51 and a connecting head 52 integrally formed with the clamping buckle 51, the clamping buckle 51 is made of elastic material, and the clamping buckle 51 is elastically clamped with the clamping groove 18, and the connecting head 52 facilitates the doctor to hold the shell cover 5 and move it.

[0048] In this embodiment, the scale is combined with Figure 1 、 Figure 7 As shown, the scale is combined with

[0049] Specifically, the bottom end of the needle cylinder 25 is provided with a color marking line 24, which can cooperate with the scale 13 to indicate the distance of the preset depth of the eye ball when in use, which is convenient for the doctor to observe and can more accurately control the depth of the eye ball.

[0050] In the embodiment, in use, the doctor first determines the amount of liquid medicine to be injected according to the positioning scale 22, and draws the liquid medicine into the syringe 25 through the injection plunger 21 and the injection needle 23. At this time, the scale body 1 is in a sealed state, the doctor opens the shell cover 5, and the injection needle 2 pierces the sealing film 3 into the scale body 1, the injection needle 23 extends out of the needle hole 15, and the syringe 25 is located in the accommodating cavity. The depth of the injection needle 2 into the eyeball is set to 4 mm, the position of the injection needle 2 relative to the scale body 1 can be determined according to the scale 13, so that the injection needle 23 extends out of the needle hole 15 of the scale body 1 by 4 mm, and the position of the injection needle 2 relative to the scale body 1 is more accurately determined through the color mark line 24 and the scale 13. The locking mechanism 12 is moved to lock the injection needle 2, specifically, the doctor holds the locking control cap 121, the positioning clamping sleeve 124 is moved by the control screw rod 122, the rotating block 126 rotates along the embedded groove 128 to drive the positioning clamping sleeve 124 to move towards the injection needle 2, so as to lock the injection needle 2.

[0051] During the operation, the doctor holds the scale body 1 and drives the injection needle 23 to pierce into the eyeball, at this time, the scale body 1 and the injection needle 2 move towards the eyeball, so that the injection needle 23 moves towards the eyeball, when the arc-shaped bottom surface 16 of the scale body 1 is attached to the surface of the eyeball, the doctor pushes the injection plunger 21 to inject the liquid medicine into the eyeball of the patient, which can reduce the risk of operation and ensure that the injection needle 2 smoothly injects the liquid medicine into the eyeball, so as to achieve the purpose of treatment.

[0052] Many other changes and modifications can be made to the present application without departing from the spirit and scope of the application. It should be understood that the present application is not limited to the specific embodiments, and the scope of the present application is defined by the appended claims.

Claims

1. A scale for a syringe, the scale being adapted to be fitted over the syringe, characterised in that, The scale device comprises a scale device body (1) with a containing cavity, and a locking mechanism (12) arranged on the scale device body (1), the scale device body (1) is formed with a containing opening and a needle hole (15) through which a needle part of a syringe is penetrated, the containing opening and the needle hole (15) are communicated with the containing cavity respectively, the syringe is penetrated through the containing opening and placed in the containing cavity, and the syringe is limited at any position in the extension direction of the scale device body (1) by the locking mechanism (12).

2. A scale according to claim 1, wherein The scale device body (1) is arranged as a transparent shell capable of containing the cavity, and the scale device body (1) with the transparent shell is provided with a scale ruler (13) along the moving track direction of the syringe.

3. A scale according to claim 1, wherein The locking mechanism (12) comprises a control threaded rod (122) screwed on the scale device body (1), and a positioning clamping sleeve (124) rotationally connected to the control threaded rod (122), the control threaded rod (122) is rotated to drive the positioning clamping sleeve (124) to move towards the syringe, so as to limit the syringe in the containing cavity.

4. A scale according to claim 3, wherein A rotating block (126) is arranged on the control threaded rod (122), the positioning clamping sleeve (124) is provided with an embedding groove (128) corresponding to the rotating block (126), and the rotating block (126) is rotationally connected in the embedding groove (128).

5. A scale according to claim 3, wherein An elastic member is sleeved on the control threaded rod (122), and two ends of the elastic member are respectively abutted on the positioning clamping sleeve (124) and the scale device body (1).

6. A scale according to claim 3, wherein A connecting sleeve protrusion (14) is arranged on the scale device body (1), the connecting sleeve protrusion (14) is arranged corresponding to the control threaded rod (122), the control threaded rod (122) is sleeved on the connecting sleeve protrusion (14) and is threadedly connected with the connecting sleeve protrusion (14).

7. A scale according to claim 6, wherein A lock control cap (121) is axially arranged on the rod end of the control threaded rod (122), and the control threaded rod (122) is limited in the moving position by cooperating with the connecting sleeve protrusion (14) through the lock control cap (121).

8. A scale according to claim 3, wherein A limiting rod (123) is arranged on the positioning clamping sleeve (124), the limiting rod (123) is sleeved on the scale device body (1) and is arranged along the length direction of the positioning clamping sleeve (124).

9. A scale according to claim 8, wherein, The limiting rod (123) is arranged in two, and the two limiting rods (123) are arranged side by side.

10. An injection device for ocular injections, characterized in that The injection device comprises the scale device and an injection needle (2), the injection needle (2) is movably sleeved on the scale device.

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