CN219166602U - Skull fixing nail capable of measuring thickness of skull - Google Patents

Abstract

The utility model relates to a cranial fixation nail capable of measuring the thickness of the skull, which comprises a clavicle structure, a connecting structure and a measuring structure; the clavicle structure includes two clavicle fixing pieces, and the connecting structure is divided into two parts. Flexible connection, the connection structure is fixed between two clavicle fixation plates; a tightening structure is arranged above the clavicle structure, and the tightening structure is connected with the connection structure; in this way, the clavicle structure is placed on the skull, and the tightening structure is used to and the connecting structure to adjust the relative position between the upper and lower two clavicle fixation pieces, the measuring structure is a separate structure, and the skull thickness of the child is measured through the measuring structure before using the cranial nail.

Description

A cranial fixation nail capable of measuring skull thickness

technical field

The utility model belongs to the technical field of medical instruments, in particular to a skull fixing nail capable of measuring the thickness of the skull.

Background technique

For operations that require craniotomy, it is often necessary to use artificial implant materials other than sutures to ensure accurate skull alignment and reduce the occurrence of postoperative bone flap displacement during bone flap reduction. For children, the material should be firm and minimize the impact on the natural growth of the skull. Therefore, some manufacturers have developed absorbable cranial fixation nails with absorbable polyester material as the main material. The product consists of two oppositely placed absorbable webs and non-absorbable sutures, the webs face the exposed side, have serrated edges for occlusal skull, and each has two symmetrical plastic posts for attaching the webs Anchored with bone sutures.

The existing absorbable cranial fixation screw can overcome the problem that the metal connecting piece is not absorbable and limits the growth of the skull. However, the thickness of the skull varies widely in children (this is a big difference from adults), and in diseases where there may be widespread or localized intracranial pressure, such as hydrocephalus, arachnoid cysts, and craniosynostosis, patients with Children's skulls are often very thin, and the size of the plastic columns on both sides of the current absorbable cranial fixation screw is fixed, so it is not suitable for all children. For children with thin skulls, this connecting piece cannot tightly fix the bone flap with the surrounding skull; it is impossible to measure the thickness of the skull and choose a suitable cranial fixation nail based on the measurement results.

The utility model aims at the above problems, and provides a skull fixation nail capable of measuring the thickness of the skull.

Utility model content

In order to overcome the problems raised in the background technology, the utility model provides a skull fixation nail capable of measuring the thickness of the skull.

A cranial fixation screw capable of measuring the thickness of the skull, which includes a clavicle structure, a connecting structure and a measuring structure; the clavicle structure includes two clavicle fixation pieces, and the connecting structure is divided into two parts, which are movably connected and connected The structure is fixed between two clavicle fixation plates; a tightening structure is arranged above the clavicle structure, and the tightening structure is connected to the connecting structure; in this way, the clavicle structure is placed on the skull, and the tightening structure and the connecting structure are used to adjust The relative position between the upper and lower clavicle fixation pieces, the measurement structure is a separate structure, and the thickness of the child's skull is measured through the measurement structure before using the skull fixation nail.

Further, the clavicle fixation piece is circular, with a diameter of 2-4cm and a thickness of 2-5mm; the material of the clavicle fixation piece is absorbable material.

Further, the inner side or inner and outer sides of the clavicle fixation plate are provided with serrated structures for occlusal skull, which ensures a tighter occlusion during use and no relative movement.

Further, a fixing plate is arranged on the inside of the clavicular fixation plate, which can strengthen the strength of the joint between the clavicle fixation plate and the tightening structure.

Further, several threading holes are provided in the middle of the clavicle fixing piece, preferably, four threading holes are provided.

Further, the connection structure includes a connecting column and a connecting groove, the diameter of the connecting column is less than or equal to the inner diameter of the connecting groove, the connecting column extends into the connecting groove and moves up and down, and the two can control the distance between the two clavicle fixation pieces in a telescopic manner.

Further, the connecting column is arranged at both ends of the fixing plate of the upper clavicle fixation piece or the fixing plate of the lower clavicle fixation piece, and the connection groove is set at both ends of the fixing plate of the lower clavicle fixation piece or the fixing plate of the upper clavicle fixation piece; The upper and lower positions of the connecting column correspond to the connecting groove.

Alternatively, the connecting structure is a connecting column arranged at both ends of the fixing plate of the upper clavicle fixation piece and the fixing plate of the lower clavicle fixing piece, and the upper connecting column and the lower connecting column are intersected; There is no intersection between the projected figure of the projected figure and the projected figure of the connecting column below.

Further, the clavicle structure and the connection structure are provided with different sizes, and the fixation pieces are aimed at different skull thickness ranges. For skulls with different thickness ranges, choose different sizes of fixation pieces.

Further, the connecting column and the connecting groove are set in a cylindrical shape, which can ensure the smallest space occupied in the skull gap.

Further, the tightening structure includes an outer sleeve, an inner sleeve and sutures, the sutures are fixed on the inner sleeve, the inner sleeve is inside the outer sleeve, and the inner sleeve is movably connected with the outer sleeve.

Further, the sutures are sequentially passed through the threading holes of the two clavicle fixation pieces, and after protruding from the last threading hole, the remaining thread is tied to the suture connected to the inner sleeve, and the inner sleeve can be pulled Tighten the two clavicle fixators; the sutures are absorbable sutures.

Further, the outer sleeve is cylindrical, with a tapered lower end, a first hole is set inside the cylinder, and a second hole is set in the tapered part, the first hole is larger than the diameter of the second hole, and the first hole inside the outer sleeve is A boss is formed at the joint between the hole and the second hole;

Further, a handle is provided on the upper part of the outer casing, which is more convenient to operate.

Further, the inner casing is cylindrical, the length of the inner casing is greater than the length of the outer casing, a thin rod is arranged at the lower end, the thin rod fixes the suture, the diameter of the thin rod is smaller than the diameter of the second hole, and the diameter of the inner casing is larger than that of the second hole Diameter, to ensure that the thin rod can protrude in the second hole and the inner sleeve will not fall out.

Further, the outer surface of the cylindrical part of the inner sleeve is provided with a scale line, and the scale line is set from top to bottom, the thin rod of the inner sleeve protrudes from the second hole of the outer sleeve, the cylindrical part is on the boss, and the inner sleeve The upper end of the tube is flush with the top of the outer casing, and the scale is set to 0.

Further, the upper end of the inner sleeve is provided with an operating part, which makes it more convenient to operate the tightening structure.

Further, the measuring structure includes a fixed part and a moving part; the moving part is movably connected with the fixed part, and the moving part slides up and down along the fixed part.

Further, the fixing member is set as a long cylindrical rod, the diameter of which is smaller than the length of the cranial gap of the child, and a locking protrusion is provided at the bottom of the side of the long cylindrical rod.

Further, scale lines are set on the outer surface of the fixing member, and the scale lines are set from bottom to top, and the upper surface of the clamping protrusion is set to scale 0.

Further, the moving part is set as a ring 1, the inner diameter of the ring 1 is greater than or equal to the diameter of the fixed part, and a protrusion structure is provided on the top of the ring 1, and the protrusion structure is convenient for medical personnel to operate.

Further, a connecting rod is arranged at the bottom of the ring, and the connecting rod is in the shape of a minor arc in a top view, which is convenient for reading.

Further, ring 2 is arranged on the lower side of the connecting rod, and the bottom of the side of ring 2 is provided with stuck protrusion 2. The ring 2 is parallel to ring 1. The dead protrusion one is stuck on the inside of the child's skull, and the moving parts are adjusted so that the dead protrusion two is stuck on the outside of the child's skull, and then the reading is performed, and different types of clavicle structures and connection structures are selected according to the data.

Beneficial effects of the utility model: the utility model has a reasonable structure; by setting the zigzag structure on the clavicle fixation piece, the clavicle fixation piece can be better in contact with the head to prevent relative movement with the head; structure, the clavicle fixation piece can be tightly fixed on the skull of the child, making it more comfortable for the child to use and making the device more stable; the thickness of the skull of the child can be measured by setting the measurement structure, and different sizes can be selected according to the thickness of the skull. The cranial fixation screw is more targeted in treatment, which is conducive to the healing of the skull of children, and also has a clearer understanding of the thickness of the skull of children of different ages.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is the structural representation of the utility model clavicular fixator;

Fig. 3 is a sectional view of the clavicular structure of the present invention;

Fig. 4 is the structural representation of the outer sleeve of the utility model;

Fig. 5 is the cross-sectional view of the outer casing of the present invention;

Fig. 6 is a schematic structural view of the inner casing of the present invention;

Figure 7 is a cross-sectional view of the cooperation between the inner casing and the outer casing of the present invention;

Fig. 8 is a schematic diagram of the measurement structure of the utility model;

Fig. 9 is a sectional view of the utility model measuring structure;

In the figure, 1. Clavicle fixation piece; 2. Connecting post; 3. Connecting groove; 4. Fixing plate; 5. Threading hole; 6. Suture; 7. Outer sleeve; 8. Inner sleeve; , fixed piece; 11, protruding structure; 12, moving piece; 13, zigzag structure; 14, first hole; 15, second hole; 16, scale line; 17, operation part; 18, thin rod; 19, connection Rod; 20, ring two; 21, stuck two sudden; 22, stuck sudden one.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described through specific specific examples below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Those skilled in the art Other advantages and functions of the present invention can be easily understood from the content disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation modes. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments of the utility model, those skilled in the art All other embodiments obtained by personnel without creative work belong to the protection scope of the present utility model.

Example 1

Please refer to Fig. 1-9, a kind of cranial fixation screw that can measure skull thickness in this embodiment, it comprises clavicular structure, connection structure and measuring structure; Clavicle structure comprises two clavicle fixation pieces 1, and connection structure is divided into two parts , the two parts are flexibly connected, and the connecting structure is fixed between the two clavicle fixing pieces 1; a tightening structure is arranged above the clavicle structure, and the tightening structure is connected with the connecting structure; in this way, the clavicle structure is placed on the skull, The relative position between the upper and lower clavicle fixation plates 1 is adjusted by using the tightening structure and the connecting structure. The measuring structure is a separate structure. Before using the cranial fixation screw, the skull thickness of the child is measured through the measuring structure.

Example 2

Please refer to Fig. 1-3, on the basis of embodiment 1, present embodiment increases following technical feature: (connecting plate and structure are carried out following specific settings): clavicle fixing plate 1 is circular, and diameter is 2-4cm, and thickness 2-5mm; clavicular fixation plate 1 is made of absorbable material.

Serrated structures 13 are provided on the inner side or inner and outer sides of the clavicle fixation plate 1 for occlusal skull, which ensures tighter occlusion during use and no relative movement. A fixing plate 4 is arranged on the inner side of the clavicular fixation plate 1, which can strengthen the strength of the joint between the clavicle fixation plate 1 and the tightening structure. Several threading holes 5 are provided in the middle of the clavicle fixation piece 1 , preferably, four threading holes 5 are provided. The clavicular fixation sheet 1 is made of absorbable material.

The connection structure includes a connecting column 2 and a connecting groove 3. The diameter of the connecting column 2 is less than or equal to the inner diameter of the connecting groove 3. The connecting column 2 extends into the connecting groove 3 and moves up and down. distance. The connecting column 2 is arranged at both ends of the fixing plate 4 of the upper clavicle fixation piece 1 or the fixing plate 4 of the lower clavicle fixation piece 1, and the connecting groove 3 is arranged on the fixing plate 4 of the lower clavicle fixation piece 1 or the fixing plate 4 of the upper clavicle fixation piece 1. The two ends of the plate 4; the upper and lower positions of the connecting column 2 and the connecting groove 3 correspond.

Alternatively, the connection structure is the connecting columns 2 arranged at both ends of the fixing plate 4 of the upper clavicle fixation piece 1 and the fixing plate 4 of the lower clavicle fixing piece 1, and the upper connecting column 2 and the lower connecting column 2 are intersected; In the top view state, the projection figure of the upper connecting column 2 does not intersect with the projection figure of the lower connecting column 2.

Further, the clavicle structure and the connection structure are provided with different sizes, and the fixation pieces are aimed at different skull thickness ranges. For skulls with different thickness ranges, choose different sizes of fixation pieces.

The connecting column 2 and the connecting groove 3 are set in a cylindrical shape, which can ensure the smallest space occupied in the skull gap.

Example 3

Please refer to Fig. 1, 4-7, on the basis of embodiment 1-2, present embodiment increases following technical feature (the tightening structure is carried out following concrete setting): tightening structure comprises outer sleeve 7, inner sleeve 8 and The suture 6, the suture 6 is fixed on the inner sleeve 8, the inner sleeve 8 is inside the outer sleeve 7, and the inner sleeve 8 is flexibly connected with the outer sleeve 7.

The sutures 6 pass sequentially through the threading holes 5 of the two clavicle fixation pieces 1, and after protruding from the last threading hole 5, the remaining threads are tied to the sutures 6 connected to the inner sleeve 8, and the inner sleeve is pulled 8 to tighten the two clavicular fixators 1; the suture 6 is a suture 6 made of absorbable material.

Outer sleeve 7 is cylindrical, and the lower end is conical, and first hole 14 is set in cylindrical interior, and second hole 15 is set in tapered part, and first hole 14 is greater than the diameter of second hole 15, and outer sleeve 7 inside first A boss is formed at the junction of the hole 14 and the second hole 15;

A handle 9 is arranged on the upper part of the outer sleeve 7, which is more convenient to operate. The inner sleeve 8 is cylindrical, and the length of the inner sleeve 8 is greater than the length of the outer sleeve 7. A thin rod 18 is arranged at the lower end, and the thin rod 18 fixes the suture 6. The diameter of the thin rod 18 is smaller than the diameter of the second hole 15. The diameter is greater than the diameter of the second hole 15 to ensure that the thin rod 18 can protrude in the second hole 15 and the inner sleeve 8 will not fall out. The outer surface of the cylindrical part of the inner sleeve 8 is provided with a scale line 16, and the scale line 16 is set from top to bottom. The thin rod 18 of the inner sleeve 8 protrudes from the second hole 15 of the outer sleeve 7, and the cylindrical part rests on the boss. , the upper end of the inner casing 8 is flush with the top of the outer casing 7, and the scale is set to 0.

An operation part 17 is arranged at the upper end of the inner sleeve pipe 8, and the operation tightening structure is more convenient.

Example 4

Please refer to Fig. 8-9, on the basis of embodiment 1-3, present embodiment increases following technical feature (the measurement structure is carried out following specific setting): measurement structure comprises fixed part 10 and moving part 12; The parts 10 are movably connected, and the moving part 12 slides up and down along the fixed part 10 .

The fixing part 10 is set as a cylindrical long rod, the diameter of which is smaller than the length of the cranial gap of the child, and a locking protrusion 22 is arranged at the bottom of the side of the cylindrical long rod.

A scale line 16 is set on the outer surface of the fixing member 10, and the scale line 16 is set from bottom to top, and the upper surface of the clamping protrusion 22 is set as a scale 0.

The moving part 12 is arranged as a ring one, the inner diameter of the ring one is greater than or equal to the diameter of the fixed part 10, and a protruding structure 11 is arranged on the top of the ring one, and the protruding structure 11 is convenient for medical personnel to operate.

A connecting rod 19 is arranged at the bottom of the ring, and the connecting rod 19 is in the shape of a inferior arc in a top view, which is convenient for reading.

The lower side of the connecting rod 19 is provided with the ring 2 20, and the bottom of the side of the ring 220 is provided with the stuck protrusion 2 21, and the ring 2 20 is parallel to the ring 1. Dead protrusion 1 22 is stuck on the inner side of the child's skull, and the moving part 12 is adjusted so that the dead protrusion 2 21 is stuck on the outside of the child's skull, and then the reading is performed, and different types of clavicle structures and connection structures are selected according to the data.

The description of the above embodiment is only for understanding the utility model. It should be pointed out that those skilled in the art can make some improvements to the utility model without departing from the principle of the utility model, and these improvements will also fall within the protection scope of the claims of the utility model.

Claims (10)

1. The skull fixing nail capable of measuring the thickness of the skull comprises a collarbone structure, a connecting structure and a measuring structure, and is characterized in that the collarbone structure comprises two collarbone fixing pieces, the connecting structure is divided into two parts, the two parts are movably connected, and the connecting structure is fixed between the two collarbone fixing pieces; a tightening structure is arranged above the collarbone structure and is connected with the connecting structure; in this way, the collarbone structure is placed on the skull, and the relative position between the upper and lower collarbone fixing pieces is adjusted by using the tightening structure and the connecting structure.

2. A skull fixation nail according to claim 1, wherein said collarbone anchor sheet is circular, 2-4cm in diameter and 2-5mm in thickness; preferably, the collarbone fixing piece is made of absorbable materials, the edges of the inner side or the outer side of the collarbone fixing piece are provided with saw-tooth structures, and a plurality of threading holes are formed in the middle of the collarbone fixing piece.

3. A skull fixation nail capable of measuring the thickness of the skull as in claim 1, wherein a fixation plate is provided inside the collarbone fixation piece.

4. A skull anchor as in claim 3 wherein the connecting structure comprises a connecting post and a connecting slot, the connecting post having a diameter less than or equal to the inner diameter of the connecting slot, the connecting post extending into the connecting slot and moving up and down.

5. A skull fixation nail capable of measuring skull thickness according to claim 4, wherein the connecting posts are arranged at two ends of the fixation plate of the upper collarbone fixation piece or the fixation plate of the lower collarbone fixation piece, and the connecting grooves are arranged at two ends of the fixation plate of the lower collarbone fixation piece or the fixation plate of the upper collarbone fixation piece; the connecting column corresponds to the upper and lower positions of the connecting groove.

6. A skull fixation nail according to claim 1, wherein said cinching structure comprises an outer sleeve, an inner sleeve and a suture; the suture is fixed on an inner sleeve, the inner sleeve is arranged inside the outer sleeve, and the inner sleeve is movably connected with the outer sleeve; the measuring structure is a separated structure, and the thickness of the skull of the infant is measured by the measuring structure before the skull fixing nail is used.

7. A skull fixation screw as in claim 6, wherein the suture thread passes sequentially through the threaded holes of the two collarbone fixation plates, and after the last threaded hole is extended, the remaining thread is tied to the inner sleeve.

8. A skull fixation nail capable of measuring the thickness of the skull according to claim 6, wherein the outer sleeve is cylindrical, the lower end is conical, a first hole is arranged in the cylindrical, a second hole is arranged in the conical part, the first hole is larger than the second hole in diameter, and a boss is formed at the joint of the first hole and the second hole in the outer sleeve; the inner sleeve is cylindrical, the length of the inner sleeve is larger than that of the outer sleeve, a thin rod is arranged at the lower end of the inner sleeve, the suture is fixed by the thin rod, the diameter of the thin rod is smaller than that of the second hole, and the diameter of the inner sleeve is larger than that of the second hole.

9. The skull fixation nail capable of measuring the thickness of the skull of claim 8, wherein a lower operation part is arranged at the upper end of the inner sleeve, and the tightening structure is more convenient to operate.

10. A skull anchor as defined in any one of claims 1 to 9, wherein the measurement structure comprises a fixed member and a movable member; the movable piece is movably connected with the fixed piece, and slides up and down along the fixed piece; the fixing piece is a cylindrical long rod, the diameter of the cylindrical long rod is smaller than the length of a skull gap of an infant, and a clamping protrusion I is arranged at the bottom of the side surface of the cylindrical long rod; the outer side of the fixing piece is provided with scale marks, the scale marks are arranged from bottom to top, and the upper surface of the clamping protrusion I is provided with scale 0; the movable part is a first circular ring, the inner diameter of the first circular ring is larger than or equal to the diameter of the fixed part, and the top of the first circular ring is provided with a protruding structure; the bottom of the first circular ring is provided with a connecting rod, and the top view of the connecting rod is in a minor arc shape; the lower side of the connecting rod is provided with a second ring, the bottom of the side surface of the second ring is provided with a second locking protrusion, and the second ring is parallel to the first ring.

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