CN115804687A - Marker with cutting guide structure - Google Patents

Abstract

The invention discloses a marker with a cutting guide structure, which comprises a positioning outer ring, a positioning inner ring and a handheld part, wherein the positioning inner ring is coaxially nested with the positioning outer ring and is in sliding fit along the circumferential direction; the positioning outer ring and the positioning inner ring are both hollow annular structures; scales are uniformly distributed on the upper ring surface of the positioning inner ring or the positioning outer ring; the inner side surface of the positioning inner ring extends out of the guide block in the ring, and a guide groove for accommodating a scalpel is formed in the guide block. The invention is beneficial to the user to realize the positioning and cutting outline of the cornea in one step in the operation process, and reduces the operation risk and time.

Description

Marker with cutting guide structure

Technical Field

The invention belongs to the technical field of medical instruments, relates to an auxiliary instrument for a corneal transplantation operation, and particularly relates to a marker with a cutting guide structure.

Background

The cornea transplantation is a treatment method for replacing the existing diseased cornea with the normal cornea of the eye to make the affected eye clear or control the corneal diseases so as to achieve the purpose of improving vision or treating certain corneal diseases.

The existing cornea marker is in a regular circular ring shape, scales are marked on the circumference of the marker, the scale range is 0-360 degrees, a single handle is matched for fixing a marking ring in an operation, a marking pen is used for marking when the cornea marker is used, the cornea marker is removed, then a scalpel is used for cutting, errors can be generated in actual cutting, and the postoperative effect of the ophthalmic operation is influenced to a greater or lesser extent.

Application number is CN202110227198.7 discloses a marker for corneal transplantation is sewed up, and it includes holding portion that the holding portion of holding with the holding ring laminating or separation is equipped with the scale on the upper surface of holding ring, and the interval installs two locating levers on the holding ring, fixes a plurality of locating pieces along its length direction evenly at an interval on two locating levers. The positioning rod slides to the operation position along the circumferential direction of the positioning ring, and then the position of the cornea is positioned by the positioning rod.

Although the marker for corneal transplantation suturing can position the cornea, the positioning rod and the positioning block are additionally arranged, so that the sight of a doctor is easily shielded, and the corneal surgery effect is influenced. In addition, during the operation, the positioning rod is easy to slide relatively along the positioning ring, so that the positioning stability of the cornea is poor. Moreover, the marker is mainly used for corneal transplantation suture, does not consider the use of a corneal incision scalpel, and is not suitable for corneal incision marking.

In conclusion, the conventional corneal marker is difficult to effectively mark the cornea, and the corneal mark is not effectively fused with the operation process, so that the corneal operation effect is difficult to effectively improve.

Disclosure of Invention

The invention aims to solve the problems of inaccurate marking, influence on corneal surgery and the like of the existing corneal marker, and provides the marker with the cutting guide structure, so that accurate marking of a cornea can be realized, a moving track of a scalpel can be guided, and the corneal surgery quality is improved.

In order to achieve the purpose, the invention adopts the following technical scheme.

The marker with the cutting guide structure comprises a positioning outer ring, a positioning inner ring and a handheld part, wherein the positioning inner ring is coaxially nested with the positioning outer ring and is in sliding fit along the circumferential direction; the positioning outer ring and the positioning inner ring are both hollow annular structures; scales are uniformly distributed on the upper ring surface of the positioning inner ring or the positioning outer ring; the inner side surface of the positioning inner ring extends to the guide block in the ring, and the guide block is provided with a guide groove for accommodating a scalpel.

In the marker with the cutting guide structure, the outer side surface of the positioning inner ring is provided with a sliding chute extending inwards along the circumferential direction, and the positioning outer ring is uniformly provided with more than one limiting piece extending inwards from the inner side of the positioning outer ring along the circumferential direction; the limiting piece extends into the sliding groove of the positioning inner ring, and the limiting piece is locked with the positioning outer ring. In a preferred embodiment, the number of the stoppers is 1 to 3. The limiting part and the positioning outer ring can be connected through threaded connection or in a self-locking clamping mode. The outer diameter of the end part of the limiting part is smaller than the width of the sliding groove of the positioning inner ring, and the end surface of the end part of the limiting part is in clearance fit with the bottom of the sliding groove.

In the marker with the cutting guide structure, the lower ring surface of the positioning outer ring is formed with a first annular curved surface with gradually decreasing height from outside to inside.

In the marker with the cutting guide structure, the lower ring surface of the positioning inner ring is provided with a second annular curved surface with the height gradually decreasing from outside to inside. In a preferred implementation, the positioning inner ring second annular curved surface has the same radius of curvature as the first annular curved surface.

In the marker with the cutting guide structure, the upper ring surface of the positioning inner ring also forms an annular conical surface with the height gradually decreasing from outside to inside.

The marker with the cutting guide structure has the advantages that the scales can be arranged on the upper ring surface of the positioning inner ring or the positioning outer ring:

(i) When the positioning inner ring is evenly provided with scales, the outer side of the upper ring surface of the positioning inner ring extends outwards along the circumferential direction to form a first limiting step. In a preferred implementation mode, the first limiting step is positioned above the positioning outer ring and attached to the positioning outer ring; the width of the first limit step is also the same as that of the positioning outer ring.

(ii) When the positioning outer ring is uniformly provided with scales, the outer side of the upper ring surface of the positioning inner ring extends outwards along the circumferential direction to form a second limiting step; and a third limiting step matched with the second limiting step is arranged on the inner side of the upper ring surface of the positioning outer ring along the circumferential direction.

Regardless of the scale arrangement mode, the height of the part below the limiting step of the positioning inner ring is the same as the height of the inner side of the positioning outer ring.

The marker with the cutting guide structure can be provided with a rod-shaped handle. The handle is fixedly connected with the side surface of the positioning outer ring through a tail end connecting part, and in a preferred implementation mode, the handle connecting part is perpendicular to the outer side surface of the positioning outer ring and is fixedly arranged in a corresponding positioning hole; in a further preferred implementation, the two are connected by a screw thread. The included angle formed by the axis of the handle and the connecting part is 120-150 degrees. The handle is further provided with more than one section of anti-slip part, and the anti-slip part is provided with a plurality of annular grooves, so that knurls which are regularly distributed are formed.

Compared with the prior art, the marker with the cutting guide structure provided by the invention has the following beneficial effects:

(1) The invention is provided with the positioning outer ring and the positioning inner ring which can slide relatively, and the positioning inner ring is provided with the slotted guide block for guiding the cutting of the scalpel, thereby being beneficial to a user to realize the positioning and cutting profile of the cornea at one time in the operation process and reducing the operation risk and time.

(2) The marker provided by the invention does not need to move in the whole operation process, and can keep accurate positioning of the cornea.

(3) The marker provided by the invention has the advantages that the scales are uniformly marked on the annular surface of the positioning inner ring or the positioning outer ring, and the rotating angle of the scalpel can be accurately given.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a perspective view of a marker having a cutting guide structure provided in example 1.

Fig. 2 is an exploded view of the positioning outer ring and the positioning inner ring in example 1.

Fig. 3 is a cross-sectional view of the marker having a cutting guide structure provided in example 1.

Fig. 4 is an enlarged view of a portion a of fig. 3.

FIG. 5 is a view showing positioning of an outer ring in embodiment 1; wherein, (a) a front view, and (B) a cross-sectional view taken along line B-B.

FIG. 6 shows positioning of an inner ring in embodiment 1; wherein, (a) a front view, and (b) a cross-sectional view taken along line C-C.

Fig. 7 is a schematic view of the handle structure.

Fig. 8 is a perspective view of the marker having the cutting guide structure provided in example 2.

Fig. 9 is a cross-sectional view of the marker having a cutting guide structure provided in example 2.

Fig. 10 is an enlarged view of a' portion of fig. 9.

FIG. 11 is a view showing positioning of an outer ring in embodiment 2; wherein, (a) a front view, and (B) a cross-sectional view taken along line B '-B'.

FIG. 12 is a positioning inner ring in embodiment 2; wherein, (a) a front view, and (b) a cross-sectional view along the line C '-C'.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely used for convenience of description and simplification of description, and do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Example 1

The marker with the cutting guide structure provided by the embodiment, as shown in fig. 1 to 7, includes a positioning outer ring 1a, a positioning inner ring 2a coaxially nested with the positioning outer ring 1a and slidably fitted in the circumferential direction, and a hand-held portion 3 fixedly connected with the side surface of the positioning outer ring 1 a. The positioning outer ring 1a and the positioning inner ring 2a are both hollow ring structures. The upper ring surface of the positioning inner ring is evenly provided with scales 4a.

As shown in figures 1 and 2, the inner side surface of the positioning inner ring 2a extends to a guide block 2a-1 in the ring, and a guide groove 2a-1-1 for accommodating a scalpel is formed in the guide block 2 a-1.

As shown in fig. 1 and fig. 2, an inward-extending chute 2a-2 is formed in the outer side surface of the positioning inner ring 2a along the circumferential direction, and more than one limiting pieces 1a-1 extending inward from the inner side of the positioning outer ring are uniformly installed in the positioning outer ring along the circumferential direction; the limiting piece extends into the sliding groove 2a-2 of the positioning inner ring, and the limiting piece is locked with the positioning outer ring. Meanwhile, the outer diameter of the end part of the limiting part is smaller than the width of the sliding groove of the positioning inner ring, and the end surface of the limiting part is in clearance fit with the bottom of the sliding groove, so that the limiting part is prevented from contacting with the positioning inner ring, and the movement of the positioning inner ring in the arrow direction in the figure 2 is limited.

The marker with the cutting guide structure is assembled and used in the following mode: the positioning outer ring 1a and the positioning inner ring 2a are nested together, the positioning outer ring and the limiting piece are locked, the limiting piece extends into the sliding groove 2a-2 of the positioning inner ring, and then the handheld portion 3 is installed to complete the assembly of the marker. During the operation, place the marker in patient's eye suitable position, hold the handheld portion, make the unable motion of location outer loop, the scalpel inserts the guide way on the guide block, and medical personnel promote the scalpel, and the location inner ring just can rotate for location outer loop center, and then reaches the purpose of cutting the cornea, and through the scale that sets up on the anchor ring on the location inner ring, scalpel turned angle can be confirmed.

The number of the limiting pieces can be 2-4. The limiting part and the positioning outer ring can be connected through threaded connection or in a self-locking clamping mode. In the embodiment, a nut is used as a limiting piece, and the nut is in threaded connection with the positioning outer ring; the number of nuts is 3.

In order to improve the experience effect of the patient, as shown in fig. 4 and 5, a first annular curved surface 1a-2 with gradually decreasing height is formed on the lower annular surface of the positioning outer ring 1 a. The positioning outer ring 1a can be tightly attached to the periphery of the eye of the patient through the related first annular curved surface, so that the positioning stability of the marker is improved conveniently. The height of the outer side H1 of the positioning outer ring is about 2.0-3.0 mm, the height of the inner side H2 is about 1.5-2.0 mm, the diameter D1 of the inner side ring surface is about 11.0-12.0 mm, the diameter D2 of the outer side is about 14.0-15.0 mm, and the curvature radius of the first annular curved surface 1a-1 (namely the curvature radius of a curve along the vertical section of the first annular curved surface) is about 5-10 mm.

Further, as shown in fig. 4 and 6, a second annular curved surface 2a-3 with a height gradually decreasing from outside to inside is formed on the lower annular surface of the positioning inner ring 2 a. To reduce patient discomfort, the positioning inner ring second toroidal curved surface 2a-3 is also of the same radius of curvature as the first toroidal curved surface 1a-2.

Furthermore, as shown in fig. 4 and 6, the upper annular surface of the positioning inner ring 2a is also formed with an annular tapered surface 2a-4 with gradually decreasing height from outside to inside. The scales 4 are uniformly distributed on the annular conical surface. Therefore, the operating range of the scalpel can be limited, and the injury to a patient is avoided. In this embodiment, the scale setting mode is: the scale is divided into two symmetrical parts along the circumferential direction, each part of scale is marked symmetrically, and corresponding scales are marked at intervals of 30 degrees. Because the corresponding position of the guide block and the handheld part (the mark point, the mark line or the mark graph can be designed in the preferred implementation mode) is marked with 0 degree, and the symmetrical position of the guide block and the handheld part is marked with 0 degree, the rotation angle can be determined by the corresponding degree of the handheld part in the operation process.

Further, as shown in fig. 4, the outer side of the upper ring surface of the positioning inner ring 2a extends outwards along the circumferential direction to form a first limit step 2a-5. The first limiting steps 2a-5 are positioned above the positioning outer ring 1a and are attached to the positioning outer ring; the height of the part below the first limit step 2a-5 of the positioning inner ring is the same as the height of the inner side of the positioning outer ring. The width of the first limit step 2a-5 is also the same as that of the positioning outer ring 1 a. In this way, positioning between the positioning inner ring and the positioning outer ring is facilitated. Researches show that the total height H3 of the outer side of the positioning inner ring is about 2.0-3.0 mm, the height H4 of the outer side of the first limiting step is about 0.5-1.0 mm, and the height H5 of the inner side of the positioning inner ring is about 1.5-2.0 mm; the distance R1 from the guide groove of the positioning inner ring guide block to the center of the positioning inner ring is about 3-4 mm, the inner radius R2 of the positioning inner ring is about 4.0-5.0 mm, the contact circular radius R3 of the positioning inner ring and the positioning outer ring is about 5.5-6.0 mm, and the outer radius R4 of the first limiting step of the positioning inner ring is about 7.0-7.5 mm.

As shown in fig. 3 and 7, the handle 3 of the present embodiment is a rod-shaped handle, and the handle is made of medical stainless steel and can withstand high-temperature and high-pressure sterilization. The handle is fixedly connected with the side surface of the positioning outer ring through a tail end connecting part 3-1. The handle connecting part 3-1 is perpendicular to the outer side surface of the positioning outer ring and is fixedly arranged in the corresponding positioning hole; the two can be connected by screw thread. In order to not shield the operation of medical staff, the included angle formed by the axis of the handle and the connecting part is 120-150 degrees. Further, for skid resistance, the handle can be further provided with more than one section of skid-proof portion 3-2 (a section of skid-proof portion is designed in the embodiment), and the skid-proof portion is provided with a plurality of annular grooves, so that knurls which are regularly distributed are formed. The handle can also be symmetrically provided with grooves 3-3 so that medical personnel can fix the handle, and the grooves are positioned below the anti-skid part.

In this embodiment, the positioning outer ring has the following dimensions:

the height of the outer side H1 of the positioning outer ring is about 2.4mm, the height of the inner side H2 is about 1.9mm, the diameter D1 of the inner side ring surface is about 12.0mm, the diameter D2 of the outer side ring surface is about 15.0mm, and the curvature radius of the first annular curved surface 1a-1 is about 8.6mm.

In this embodiment, the positioning inner ring has the following dimensions:

the total height H3 of the outer side of the positioning inner ring is about 2.5mm, the height H4 of the outer side of the first limiting step is about 0.6mm, and the height H5 of the inner side of the positioning inner ring is about 1.9mm; the distance R1 from the guide groove of the positioning inner ring guide block to the center of the positioning inner ring is about 3.75mm, the inner radius R2 of the positioning inner ring is about 4.5mm, the contact radius R3 of the positioning inner ring and the positioning outer ring is about 6.0mm, and the outer radius R4 of a first limiting step of the positioning inner ring is about 7.5mm; the included angle between the annular conical surface 2a-4 and the horizontal plane is 5 degrees.

Example 2

The marker with the cutting guide structure provided by the embodiment, as shown in fig. 7 to 12, includes a positioning outer ring 1b, a positioning inner ring 2b coaxially nested with the positioning outer ring 1b and slidably fitted in the circumferential direction, and a hand-held portion 3 fixedly connected with the side surface of the positioning outer ring 1 b. The positioning outer ring 1b and the positioning inner ring 2b are both hollow annular structures. The upper ring surface of the positioning outer ring is evenly provided with scales 4b.

As shown in fig. 10, the inner side surface of the positioning inner ring 2b extends to a guide block 2b-1 in the ring, and a guide groove 2b-1-1 for accommodating a scalpel is formed in the guide block 2 b-1.

As shown in fig. 10, the outer side surface of the positioning inner ring 2b is provided with a sliding groove 2b-2 extending inwards along the circumferential direction, and the positioning outer ring is uniformly provided with more than one limiting piece 1b-1 extending inwards from the inner side of the positioning outer ring along the circumferential direction; the limiting piece extends into the sliding groove 2b-2 of the positioning inner ring, and the limiting piece is locked with the positioning outer ring. Meanwhile, the outer diameter of the end part of the limiting part is smaller than the width of the sliding groove of the positioning inner ring, and the end surface of the limiting part is in clearance fit with the bottom of the sliding groove, so that the limiting part is prevented from contacting with the positioning inner ring, and the positioning inner ring is limited to move along the vertical direction.

The marker with the cutting guide structure is assembled and used in the following mode: and (3) nesting the positioning outer ring 1b and the positioning inner ring 2b together, locking the positioning outer ring and the limiting piece, extending the limiting piece into a sliding groove 2b-2 of the positioning inner ring, and then installing the handheld part 3 to finish the assembly of the marker. During operation, the marker is placed at a proper position of the eye of a patient, the hand-held part is held by a hand, the positioning outer ring cannot move, the scalpel is inserted into the guide groove on the guide block, medical personnel push the scalpel, and the positioning inner ring can rotate relative to the center of the positioning outer ring, so that the purpose of cutting the cornea is achieved. The rotating angle of the scalpel can be determined by the scales arranged on the upper ring surface of the positioning outer ring.

The number of the limiting members may be 2 to 4. The limiting part and the positioning outer ring can be connected through threaded connection or in a self-locking clamping mode. In the embodiment, the nut is used as a limiting piece, and the nut is in threaded connection with the positioning outer ring; the number of nuts is 3.

In order to improve the experience effect of the patient, as shown in fig. 10 and 11, a first annular curved surface 1b-2 with gradually decreasing height is formed on the lower annular surface of the positioning outer ring 1 b. The positioning outer ring 1b can be tightly attached to the periphery of the eyes of the patient through the related first annular curved surface, so that the positioning stability of the marker is improved conveniently. The height of the outer side H6 of the positioning outer ring is about 2.0-3.0 mm, the height of the inner side H7 is about 1.5-2.0 mm, the radius R5 of the inner side ring surface is about 5.5-6.0 mm, the radius R6 of the outer side is about 6.0-8.0 mm, and the curvature radius of the first annular curved surface 1b-1 is about 5-10 mm.

Further, as shown in fig. 10, the lower annular surface of the positioning inner ring 2b is formed with a second annular curved surface 2b-3 having a height gradually decreasing from the outside to the inside. To reduce patient discomfort, the positioning inner ring second annular curved surface 2b-3 is also the same radius of curvature as the first annular curved surface 1b-2.

Further, as shown in fig. 10, the upper annular surface of the positioning inner ring 2b is also formed with an annular tapered surface 2b-4 having a height gradually decreasing from the outside to the inside. Therefore, the operating range of the scalpel can be limited, and the injury to a patient is avoided.

Further, as shown in fig. 10 and 12, the outer side of the upper ring surface of the positioning inner ring 2b extends outward along the circumferential direction to form a second limiting step 2b-5, and at this time, a third limiting step 1b-3 adapted to the second limiting step 2b-5 is circumferentially arranged on the inner side of the upper ring surface of the positioning outer ring 1b, so that the contact portion of the positioning inner ring 2b and the positioning outer ring 1b is attached. And the sum of the height H7 of the part below the second limit step 2b-5 and the second limit step 2b-5 (or the third limit step 1 b-3) is recorded as the total height H8 of the inner side of the positioning outer ring. In this way, positioning between the positioning inner ring and the positioning outer ring is facilitated. The research shows that the height H9 of the outer side of the second limit step on the outer side of the positioning inner ring is about 0.5-1.0 mm, the height H10 below the second limit step on the outer side of the positioning inner ring is about 1.5-2.0 mm, and the height H11 of the inner side of the positioning inner ring is about 1.7-2.2 mm; the distance R7 from the guide groove of the positioning inner ring to the center of the positioning inner ring is about 3-4 mm, the inner radius R8 of the positioning inner ring is about 4.0-5.0 mm, the contact circle radius R9 of the positioning inner ring and the positioning outer ring is about 5.5-6.0 mm, and the outer radius R10 of the second limiting step of the positioning inner ring is about 5.5-6.5 mm.

In this embodiment, the scales 4b are uniformly arranged on the upper step surface of the third limiting step of the positioning outer ring. The scale setting mode is as follows: the scales are uniformly arranged according to 0-360 degrees, and the corresponding scales are marked every 90 degrees. Because the central position of the guide block guide groove is marked with the triangular indication mark, and the mark of the corresponding position is 0 degree, in the operation process, the triangular indication mark is matched with the scale on the positioning outer ring for use, and the rotation angle of the scalpel can be accurately displayed.

As shown in fig. 7, the handle 3 of this embodiment is a rod-shaped handle, which is made of medical stainless steel and can withstand high-temperature and high-pressure sterilization. The handle is fixedly connected with the side surface of the positioning outer ring through the tail end connecting part 3-1. The handle connecting part 3-1 is perpendicular to the outer side surface of the positioning outer ring and is fixedly arranged in the corresponding positioning hole; the two can be connected by screw thread. In order not to shield the operation of medical staff, the included angle formed by the axis of the handle and the connecting part is 120-150 degrees. Further, for skid resistance, the handle can be further provided with more than one section of skid-proof parts 3-2 (one section of skid-proof part is designed in the embodiment), and the skid-proof parts are provided with a plurality of annular grooves, so that knurls which are regularly distributed are formed. The handle can be symmetrically provided with grooves 3-3 for medical staff to fix the handle, and the grooves are positioned below the anti-skid part.

In this embodiment, the positioning outer ring has the following dimensions:

the height of the outer side H6 of the positioning outer ring is about 3.0mm, the total height H8 of the inner side is about 2.4mm, the radius R5 of the inner side ring surface is about 5.5mm, the radius R6 of the outer side ring surface is about 7.5mm, and the curvature radius of the first annular curved surface 1b-1 is about 8.6mm.

In this embodiment, the positioning inner ring has the following dimensions:

the height H9 of the outer side of the second limiting step on the outer side of the positioning inner ring is about 0.5mm, the height H10 below the second limiting step on the outer side of the positioning inner ring is about 1.9mm, and the height H11 of the inner side of the positioning inner ring is about 2.0mm; the distance R7 from the guide groove of the positioning inner ring guide block to the center of the positioning inner ring is about 3.75mm, the inner radius R8 of the positioning inner ring is about 4.5mm, the contact radius R9 of the positioning inner ring and the positioning outer ring is about 5.5mm, and the outer radius R10 of a second limiting step of the positioning inner ring is about 6.25mm; the included angle between the annular conical surface 2b-4 and the horizontal plane is 5 degrees.

The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims (17)

1. A marker with a cutting guide structure is characterized by comprising a positioning outer ring, a positioning inner ring which is coaxially nested with the positioning outer ring and is in sliding fit with the positioning outer ring along the circumferential direction, and a handheld part which is fixedly connected with the side surface of the positioning outer ring; the positioning outer ring and the positioning inner ring are both hollow annular structures; scales are uniformly distributed on the upper ring surface of the positioning inner ring or the positioning outer ring; the inner side surface of the positioning inner ring extends to the guide block in the ring, and the guide block is provided with a guide groove for accommodating a scalpel.

2. The marker with the cutting guide structure as claimed in claim 1, wherein the outer side surface of the positioning inner ring is provided with a sliding groove extending inwards along the circumferential direction, and the positioning outer ring is uniformly provided with more than one limiting pieces extending inwards from the inner side of the positioning outer ring along the circumferential direction; the limiting piece extends into the sliding groove of the positioning inner ring, and the limiting piece is locked with the positioning outer ring.

3. The marker with cutting guide structure of claim 2, wherein the number of the position limiters is 1-3.

4. The marking device with the cutting guide structure according to claim 2 or 3, wherein the position limiting member is connected with the positioning outer ring through a threaded connection or a self-locking clamping connection.

5. The marker with cutting guide structure of claim 2 or 3, wherein the outer diameter of the end of the position limiting member is smaller than the width of the positioning inner ring, and the end surface of the position limiting member is in clearance fit with the bottom of the positioning inner ring.

6. The cutting guide structured marker according to claim 1, wherein said positioning outer ring lower annular surface is formed with a first annular curved surface gradually decreasing in height from outside to inside.

7. The marker with cutting guide structure of claim 6, wherein the positioning inner ring lower ring surface is formed with a second ring-shaped curved surface with gradually decreasing height from outside to inside; the curvature radius of the second annular curved surface of the positioning inner ring is the same as that of the first annular curved surface.

8. The marker with a cutting guide structure of claim 1, 6 or 7, wherein the positioning inner ring upper annular surface further forms an annular tapered surface with a height gradually decreasing from outside to inside.

9. The marker with the cutting guide structure as claimed in claim 1, wherein when the positioning inner ring has the scales uniformly distributed on the ring surface, the outer side of the positioning inner ring upper ring surface extends outwards along the circumferential direction to form a first limit step.

10. The marker with cutting guide structure of claim 9, wherein the first limit step is located above the positioning outer ring and attached; the width of the first limit step is also the same as that of the positioning outer ring.

11. The marking device with the cutting guide structure as claimed in claim 1, 9 or 10, wherein when the positioning inner ring surface is uniformly provided with scales, the scales are divided into two symmetrical parts along the circumferential direction, and each part of the scales is marked symmetrically.

12. The marker with the cutting guide structure as claimed in claim 1, wherein when the positioning outer ring has the scales uniformly distributed on the ring surface, the outer side of the positioning inner ring upper ring surface extends outwards along the circumferential direction to form a second limit step; and a third limiting step matched with the second limiting step is arranged on the inner side of the upper ring surface of the positioning outer ring along the circumferential direction.

13. The marker having a cutting guide structure according to claim 1 or 12, wherein the scale is uniformly provided in the range of 0 to 360 °.

14. The marker with a cutting guide structure as claimed in claim 9, 10 or 12, wherein the height of the lower part of the positioning inner ring limit step is the same as the height of the inner side of the positioning outer ring.

15. The marker having a cutting guide of claim 1, wherein the handle is a rod-shaped handle.

16. The marker having a cutting guide of claim 13, wherein the handle is fixedly attached to the side of the positioning collar by a distal attachment portion.

17. The marker with a cutting guide structure of claim 14, wherein the handle connecting portion is fixedly mounted in the corresponding positioning hole perpendicular to the outer side surface of the positioning outer ring; the included angle formed by the axis of the handle and the connecting part is 120-150 degrees.

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