CN220193175U - Ophthalmic operation marker pen with replaceable head - Google Patents

Abstract

The utility model discloses an ophthalmic operation marker pen with a replaceable head, which comprises: the pen comprises a pen holder, wherein two ribs are arranged in the pen holder, a space between the ribs is a sliding groove, one end of the sliding groove is a bell mouth which gradually decreases from the outside to the inside, the other end of the sliding groove is expanded from the inside to the outside, and a step is formed at the expanded part; a sliding rod is slidably arranged in the sliding groove; the side surface of the sliding rod is provided with a side wing which is unfolded outwards and is elastically connected with the sliding rod, and the side wing is matched with the bell mouth, so that the trend of pushing the sliding rod out of the sliding groove is maintained when the sliding rod slides in the sliding groove; one end of the sliding rod is provided with a pressing element, and the other end is provided with a pen point; the pen point is movably connected with the sliding rod, an inner cavity is formed in the pen point, and a fiber material capable of absorbing ink is accommodated in the inner cavity. The pen point is replaceable, the number of elements is small, the structure is simple, the pen point is pressed for use when in use, the pen point is retracted when not in use, the whole structure does not contain metal elements, and the pen point is convenient to carry into a nuclear magnetism inspection chamber.

Description

Ophthalmic operation marker pen with replaceable head

Technical Field

The utility model relates to the field of medical instruments, in particular to an ophthalmic operation marker pen with a replaceable head.

Background

Before an ophthalmic operation, one side eye of a patient to be operated is marked, the existing mode is to draw marks by using a marker pen at the position of the forehead and the like of the patient, which is easy to identify, in order to avoid the identification trouble brought to an operator by different drawing habits of different people, the existing method uniformly requires to draw a circular mark with the diameter larger than 1cm, but the condition that the sizes of patterns with the specified sizes are not uniform still exists when different people draw the patterns without tools. The authorized bulletin number CN216724757U discloses a sterile push type ophthalmic operation site marker pen, comprising: the pen comprises a marking pen holder (1), wherein a pen core (2) is arranged in the marking pen holder (1), ink is filled in the pen core (2), a plug (3) is connected to the top end of the interior of the pen core (2) in an interference mode, the top end of the plug (3) extends to the upper portion of the marking pen holder (1), and a scale mark line (4) is arranged at the bottom end of the outer wall of the marking pen holder (1); the marking pen comprises a marking pen head (5), wherein the marking pen head (5) is arranged in a marking pen holder (1) and used for coating ink on an operation part, the marking pen head (5) comprises a mounting disc (6), an outer ring (7) is sleeved on the outer side of the mounting disc (6), an ink outlet ring groove (8) is formed between the outer wall of the mounting disc (6) and the inner wall of the outer ring (7), the ink outlet ring groove (8) is communicated with a pen core (2), connecting rods (9) are respectively arranged on the left side and the right side of the inner part of the ink outlet ring groove (8), one ends, opposite to the connecting rods (9), of each connecting rod are respectively fixedly connected with the left side and the right side of the outer wall of the mounting disc (6), and one ends, opposite to the two connecting rods (9), of each connecting rod are respectively fixedly connected with the left side and the right side of the inner wall of the outer ring (7). The problem of draw circular mark size inequality is solved, but in the in-service use, adopt the marker pen of above-mentioned technical scheme, there are structural element many, the nib is not removable and the spring need use the metal material, can't carry the problem of getting into nuclear magnetism inspection room.

Disclosure of Invention

The present utility model aims to solve at least to some extent one of the technical problems in the above-described technology. Therefore, the utility model aims to provide an ophthalmic operation marker pen with a replaceable head, which has simple structure, low cost and no metal element.

To achieve the above object, an embodiment of the present utility model provides an ophthalmic surgical marker pen with a replaceable head, comprising: penholder: two ribs are arranged in the inner part, a space between the ribs is a sliding groove, one end of the sliding groove is a bell mouth which is gradually reduced from the outside to the inside, the other end of the sliding groove is enlarged from the inside to the outside, and a step is formed at the enlarged part; a sliding rod is slidably arranged in the sliding groove; sliding rod: the side surface is provided with a side wing which is unfolded outwards and is elastically connected with the sliding rod, and the side wing is matched with the horn mouth, so that the sliding rod keeps pushing the sliding rod out of the sliding groove when sliding in the sliding groove; one end of the sliding rod is provided with a pressing element, and the other end of the sliding rod is provided with a pen point; the pen point comprises: is movably connected with the sliding rod, and is internally provided with an inner cavity which is accommodated with a fiber material capable of absorbing ink.

According to the ophthalmic operation marking pen with the replaceable head, disclosed by the embodiment of the utility model, the pen head is replaceable, the number of elements is small, the structure is simple, the pen head is pressed for use when in use, the pen head is retracted when not in use, the whole structure does not contain metal elements, and the pen head is convenient to carry into a nuclear magnetic examination room.

In addition, the ophthalmic surgery marker pen with the replaceable head according to the embodiment of the utility model can also have the following additional technical characteristics:

optionally, at the mating surface of the flank and the rib, the flank forms a groove into which the rib is clamped.

Optionally, the side wings are integrally formed with the sliding bar.

Further, a storage groove for the side wings to enter when being extruded by the thorn is formed on the sliding rod.

Optionally, the nib and the sliding rod are connected with one end to form a conical groove, the end of the corresponding sliding rod is tapered, and the nib and the sliding rod are fixed through taper fit.

Optionally, the outer surface of the pen holder is provided with a scale for measuring the length.

Further, the scales are protruded from the outer surface of the pen holder.

Drawings

FIG. 1 is a schematic diagram of an internal structure according to one embodiment of the utility model;

FIG. 2 is an external configuration diagram according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a structure upon pressing according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram illustrating the operation of the pen head replacement according to one embodiment of the present utility model

Fig. 5 is an external view schematically showing another embodiment of the present utility model.

Description of the reference numerals:

step 14 of bell mouth 13 of sliding groove 12 of rib 11 of penholder 1

Sliding rod 2 side wing 21 pressing element 22 receiving groove 23

Pen point 3

And a scale 4.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The marking pen for the ophthalmic operation, which is provided by the utility model, has the advantages that the pen head is replaceable, the number of elements is small, the structure is simple, the marking pen is pressed for use when in use, the pen head is retracted when not in use, the whole structure does not contain metal elements, and the marking pen is convenient to carry into a nuclear magnetism examination room. .

In order that the above-described aspects may be better understood, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

The background of this marker pen is: in ophthalmic surgery, the eye of a patient needs to be marked before surgery, so that the side to be marked for surgery is marked with a pattern with a specific size (generally, a circle larger than 1 cm), and because each person draws the pattern, the proper circle is difficult to directly draw without a ruler, and the size is also possibly inaccurate.

In a hospital, a pen is a tool carried by doctors and nurses, and because a nuclear magnetic resonance examination room exists in the hospital in a region which strictly prohibits metal objects from being brought in, and a pen containing a spring is too common to be brought into the examination room in the past easily, accidents occur, therefore, the marker needs to realize a structure without the metal spring for providing resilience on the basis of the existing structure.

Fig. 1 to 4 are views showing an ophthalmic surgical marker pen with a replaceable head according to an embodiment of the present utility model, including:

pen holder 1: a sliding groove 12 is formed in the inner part, the sliding groove 12 is a space formed by clamping the middle of two oppositely protruding ribs 11, one end of the sliding groove 12 is a bell mouth 13 gradually reduced from the outside image to the inside, the other end of the sliding groove is expanded from the inside to the outside, and a step 14 is formed at the expanded position; a sliding rod 2 is slidably arranged in the sliding groove 12; the pen holder 1 of the marking pen is not required to be long, but is required to be thicker than the common pen holders 1 such as a common fountain pen and the like, so that the pen head 3 can be conveniently accommodated and retracted in the pen holder 1, and the pen head 3 of the marking pen can be drawn into a round shape with the diameter larger than 1cm, so that the outer diameter of the pen holder 1 is more than 16mm, the length of the pen holder is about 90mm, and the pen head 3 extends out of the pen holder 1 by holding the pressing element 22 of the sliding rod 2 by hands when the marking pen is used.

The slope that horn mouth 13 narrowed should be as big as possible, this marker's nib 3 can realize the function as long as can stretch out pen-holder 12 ~ 3mm, and the bigger slope of horn mouth 13 can lead to slide bar 2 slidable stroke in pen-holder 1 shorter, this does not influence this marker's function realization, otherwise, bigger slope can produce bigger slide bar 2 length direction's thrust when slide bar 2's flank 21 is extruded, make slide bar 2 more easily pushed back to reset, because this device does not have metal spring, therefore this thrust is the key that realizes this marker can withdraw nib 3 in pen-holder 1. Based on this, a slope of the flare 13 between 0.5 and 1 is suitable, that is, a ratio of the dimensions between the height and the bottom length of the flare 13 is 1: 2-1: 1.

The other end of the step 14 in the pen holder 1 has two purposes, one is to limit the movable range of the sliding rod 2 when the pen point 3 is installed, so that the sliding rod cannot fall out of the pen holder 1; another purpose is to facilitate the replacement of the nib 3: when the pen point 3 is to be replaced, the sliding rod 2 is pulled up, so that the pen point 3 is propped against the step 14, the pulling force is increased, and the pen point 3 can be separated from the sliding rod 2.

Slide bar 2: the side surface is provided with a side wing 21 which is unfolded outwards and is elastically connected with the sliding rod 2, and the side wing 21 is matched with the bell mouth 13, so that the sliding rod 2 keeps pushing the sliding rod 2 out of the sliding groove 12 when sliding in the sliding groove 12; one end of the sliding rod 2 is provided with a pressing element 22, and the other end is provided with a pen point 3;

the principle is as follows: when the sliding rod 2 is pressed downwards, that is, the pen point 3 extends out of the pen holder 1, the flank 21 is extruded and deformed under the action of the bell mouth 13, kinetic energy is converted into elastic potential energy accumulated in the deformation process, when pressure is relieved, the elastic potential energy accumulated by the flank 21 acts on the bell mouth 13, acting force is perpendicular to an inclined plane, at the moment, the elastic potential energy is decomposed, and a component force 1 pointing to the radial direction of the sliding rod 2 and a component force 2 pointing to the axial direction of the sliding rod 2 can be obtained, and the component force 2 enables the sliding rod 2 to slide upwards.

Optionally, at the mating surface of the flank 21 and the rib 11, the flank 21 forms a recess into which the rib 11 snaps. With this design, the sliding rod 2 can be prevented from rotating around its long axis during sliding, so that it slides into the gaps between the ribs 11, thereby losing the rebound effect.

Alternatively, the shoulder 21 is integrally formed with the slide bar 2. Further, the slide bar 2 is formed with a receiving groove 23 into which the shoulder 21 is pushed by the chaste strip. The use of integral formation reduces manufacturing costs, and the presence of the receiving groove 23 allows the side flaps 21 to be machined to a thicker configuration, providing more resilience in cooperation with the integral formation.

And (3) a pen point: is movably connected with the sliding rod 2, and an inner cavity is formed in the sliding rod, and the inner cavity is accommodated with a fiber material capable of absorbing ink. The structure of the pen head 3 can refer to the structure disclosed in the background art, and it should be noted that the pen head 3 can be replaced by other shapes to adapt to different application scenarios.

Optionally, the nib 3 forms the taper groove with slide bar 2 one end of being connected, corresponds slide bar 2 tip and forms the tapering, and nib 3 passes through taper fit with slide bar 2 and realizes fixedly, and like this can reduce the processing degree of difficulty of nib 3 and slide bar 2, because this marker pen receives the down force in daily use, consequently taper fit can not lead to nib 3 and slide bar 2 to disengage in the use.

In the embodiment of fig. 5, the pen holder 1 is provided with the scale 5, the scale 5 can be a centimeter or other standard scale mark, and as described above, the marker pen can be replaced by a pen point with another shape, so that the marker pen has a scale function, can perform simple measurement before operation or at other needed moments, and improves the marking accuracy. Preferably, the scale 5 is protruded from the outer surface of the pen holder 1, so that not only the wear can be reduced to cause poor visibility, but also the anti-slip effect can be achieved, and if the pen holder 1 is stained with disinfectant and other substances, the structural protrusion can also avoid the condition that the scale 5 is not visible.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (7)

1. An ophthalmic surgery marker pen with a replaceable head, which is characterized in that: comprising the following steps:

penholder: two ribs are arranged in the inner part, a space between the ribs is a sliding groove, one end of the sliding groove is a bell mouth which is gradually reduced from the outside to the inside, the other end of the sliding groove is enlarged from the inside to the outside, and a step is formed at the enlarged part; a sliding rod is slidably arranged in the sliding groove;

sliding rod: the side surface is provided with a side wing which is unfolded outwards and is elastically connected with the sliding rod, and the side wing is matched with the horn mouth, so that the sliding rod keeps pushing the sliding rod out of the sliding groove when sliding in the sliding groove; one end of the sliding rod is provided with a pressing element, and the other end of the sliding rod is provided with a pen point;

the pen point comprises: is movably connected with the sliding rod, and is internally provided with an inner cavity which is accommodated with a fiber material capable of absorbing ink.

2. The interchangeable head ophthalmic surgical marker of claim 1 wherein: at the matching surface of the side wings and the ribs, the side wings form grooves for the ribs to be clamped in.

3. The interchangeable head ophthalmic surgical marker of claim 1 wherein: the side wings and the sliding rod are integrally formed.

4. A replaceable-head ophthalmic surgical marker pen as claimed in claim 3, wherein: the sliding rod is provided with a storage groove for the side wings to enter when being extruded by the ribs.

5. The interchangeable head ophthalmic surgical marker of claim 1 wherein: the pen point and one end connected with the sliding rod form a conical groove, the end part of the corresponding sliding rod forms a taper, and the pen point and the sliding rod are fixed through taper fit.

6. The interchangeable head ophthalmic surgical marker of claim 1 wherein: the outer surface of the pen holder is provided with a scale for measuring the length.

7. The interchangeable head ophthalmic surgical marker of claim 1 wherein: the scales are protruded on the outer surface of the pen holder.